/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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:09:47,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:09:47,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:09:47,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:09:47,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:09:47,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:09:47,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:09:47,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:09:47,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:09:47,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:09:47,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:09:47,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:09:47,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:09:47,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:09:47,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:09:47,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:09:47,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:09:47,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:09:47,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:09:47,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:09:47,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:09:47,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:09:47,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:09:47,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:09:47,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 09:09:47,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 09:09:47,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 09:09:47,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 09:09:47,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 09:09:47,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 09:09:47,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 09:09:47,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 09:09:47,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 09:09:47,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 09:09:47,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 09:09:47,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 09:09:47,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 09:09:47,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 09:09:47,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:09:47,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:09:47,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:09:47,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:09:47,288 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:09:47,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:09:47,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:09:47,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:09:47,294 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:09:47,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:09:47,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:09:47,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:09:47,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:09:47,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:09:47,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:09:47,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:09:47,296 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:09:47,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:09:47,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:09:47,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:09:47,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:09:47,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:09:47,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:09:47,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:09:47,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:09:47,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:09:47,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:09:47,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:09:47,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:09:47,298 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:09:47,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:09:47,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:09:47,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:09:47,699 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:09:47,699 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:09:47,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-12-22 09:09:47,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cd038e94/c02b6e56fde54621af84bdc1167ad05a/FLAG5c646a8d3 [2020-12-22 09:09:48,627 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:09:48,628 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-12-22 09:09:48,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cd038e94/c02b6e56fde54621af84bdc1167ad05a/FLAG5c646a8d3 [2020-12-22 09:09:48,733 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cd038e94/c02b6e56fde54621af84bdc1167ad05a [2020-12-22 09:09:48,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:09:48,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:09:48,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:09:48,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:09:48,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:09:48,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:09:48" (1/1) ... [2020-12-22 09:09:48,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bccc6c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:48, skipping insertion in model container [2020-12-22 09:09:48,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:09:48" (1/1) ... [2020-12-22 09:09:48,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:09:48,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:09:49,704 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[34546,34559] [2020-12-22 09:09:49,727 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[35436,35449] [2020-12-22 09:09:49,759 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[37223,37236] [2020-12-22 09:09:49,775 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[38113,38126] [2020-12-22 09:09:49,810 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[40800,40813] [2020-12-22 09:09:49,830 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[41693,41706] [2020-12-22 09:09:49,862 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[43483,43496] [2020-12-22 09:09:49,889 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[44844,44857] [2020-12-22 09:09:50,068 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[60312,60325] [2020-12-22 09:09:50,091 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[61205,61218] [2020-12-22 09:09:50,126 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[62995,63008] [2020-12-22 09:09:50,210 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[67408,67421] [2020-12-22 09:09:50,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:09:50,420 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:09:50,707 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[34546,34559] [2020-12-22 09:09:50,724 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[35436,35449] [2020-12-22 09:09:50,752 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[37223,37236] [2020-12-22 09:09:50,769 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[38113,38126] [2020-12-22 09:09:50,806 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[40800,40813] [2020-12-22 09:09:50,824 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[41693,41706] [2020-12-22 09:09:50,851 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[43483,43496] [2020-12-22 09:09:50,869 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[44844,44857] [2020-12-22 09:09:51,018 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[60312,60325] [2020-12-22 09:09:51,038 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[61205,61218] [2020-12-22 09:09:51,069 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[62995,63008] [2020-12-22 09:09:51,138 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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[67408,67421] [2020-12-22 09:09:51,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:09:51,302 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:09:51,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:51 WrapperNode [2020-12-22 09:09:51,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:09:51,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:09:51,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:09:51,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:09:51,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:51" (1/1) ... [2020-12-22 09:09:51,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:51" (1/1) ... [2020-12-22 09:09:51,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:09:51,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:09:51,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:09:51,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:09:51,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:51" (1/1) ... [2020-12-22 09:09:51,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:51" (1/1) ... [2020-12-22 09:09:51,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:51" (1/1) ... [2020-12-22 09:09:51,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:51" (1/1) ... [2020-12-22 09:09:51,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:51" (1/1) ... [2020-12-22 09:09:51,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:51" (1/1) ... [2020-12-22 09:09:51,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:51" (1/1) ... [2020-12-22 09:09:51,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:09:51,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:09:51,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:09:51,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:09:51,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:51" (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 09:09:51,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:09:51,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:09:51,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:09:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:09:55,796 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:09:55,796 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:09:55,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:09:55 BoogieIcfgContainer [2020-12-22 09:09:55,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:09:55,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:09:55,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:09:55,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:09:55,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:09:48" (1/3) ... [2020-12-22 09:09:55,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23833418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:09:55, skipping insertion in model container [2020-12-22 09:09:55,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:51" (2/3) ... [2020-12-22 09:09:55,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23833418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:09:55, skipping insertion in model container [2020-12-22 09:09:55,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:09:55" (3/3) ... [2020-12-22 09:09:55,809 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-12-22 09:09:55,815 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:09:55,821 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-12-22 09:09:55,839 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-12-22 09:09:55,872 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:09:55,873 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:09:55,873 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:09:55,873 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:09:55,873 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:09:55,873 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:09:55,873 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:09:55,873 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:09:55,909 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states. [2020-12-22 09:09:55,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-12-22 09:09:55,944 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:55,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:09:55,947 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.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:55,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:55,956 INFO L82 PathProgramCache]: Analyzing trace with hash 752362504, now seen corresponding path program 1 times [2020-12-22 09:09:55,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:55,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540093716] [2020-12-22 09:09:55,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:56,991 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 09:09:56,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540093716] [2020-12-22 09:09:56,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:56,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:09:56,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958023384] [2020-12-22 09:09:57,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:09:57,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:57,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:09:57,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:57,025 INFO L87 Difference]: Start difference. First operand 987 states. Second operand 3 states. [2020-12-22 09:09:57,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:57,708 INFO L93 Difference]: Finished difference Result 1762 states and 3134 transitions. [2020-12-22 09:09:57,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:09:57,710 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 314 [2020-12-22 09:09:57,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:57,754 INFO L225 Difference]: With dead ends: 1762 [2020-12-22 09:09:57,754 INFO L226 Difference]: Without dead ends: 1543 [2020-12-22 09:09:57,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:57,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2020-12-22 09:09:57,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1541. [2020-12-22 09:09:57,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2020-12-22 09:09:57,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2386 transitions. [2020-12-22 09:09:57,922 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2386 transitions. Word has length 314 [2020-12-22 09:09:57,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:09:57,926 INFO L481 AbstractCegarLoop]: Abstraction has 1541 states and 2386 transitions. [2020-12-22 09:09:57,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:09:57,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2386 transitions. [2020-12-22 09:09:57,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-12-22 09:09:57,938 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:57,939 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:09:57,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:09:57,941 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.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:57,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:57,942 INFO L82 PathProgramCache]: Analyzing trace with hash 751931528, now seen corresponding path program 1 times [2020-12-22 09:09:57,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:57,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299560414] [2020-12-22 09:09:57,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:59,041 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 09:09:59,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299560414] [2020-12-22 09:09:59,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:59,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:09:59,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649848594] [2020-12-22 09:09:59,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:09:59,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:59,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:09:59,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:09:59,047 INFO L87 Difference]: Start difference. First operand 1541 states and 2386 transitions. Second operand 4 states. [2020-12-22 09:09:59,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:59,470 INFO L93 Difference]: Finished difference Result 4559 states and 7049 transitions. [2020-12-22 09:09:59,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:09:59,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 314 [2020-12-22 09:09:59,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:59,496 INFO L225 Difference]: With dead ends: 4559 [2020-12-22 09:09:59,497 INFO L226 Difference]: Without dead ends: 3029 [2020-12-22 09:09:59,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:09:59,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3029 states. [2020-12-22 09:09:59,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3029 to 2874. [2020-12-22 09:09:59,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2874 states. [2020-12-22 09:09:59,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 4451 transitions. [2020-12-22 09:09:59,712 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 4451 transitions. Word has length 314 [2020-12-22 09:09:59,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:09:59,712 INFO L481 AbstractCegarLoop]: Abstraction has 2874 states and 4451 transitions. [2020-12-22 09:09:59,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:09:59,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 4451 transitions. [2020-12-22 09:09:59,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-12-22 09:09:59,723 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:59,724 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:09:59,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:09:59,724 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.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:59,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:59,728 INFO L82 PathProgramCache]: Analyzing trace with hash -883694474, now seen corresponding path program 1 times [2020-12-22 09:09:59,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:59,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463256876] [2020-12-22 09:09:59,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:00,139 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 09:10:00,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463256876] [2020-12-22 09:10:00,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:00,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:00,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111835197] [2020-12-22 09:10:00,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:00,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:00,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:00,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:00,142 INFO L87 Difference]: Start difference. First operand 2874 states and 4451 transitions. Second operand 3 states. [2020-12-22 09:10:00,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:00,456 INFO L93 Difference]: Finished difference Result 8399 states and 12965 transitions. [2020-12-22 09:10:00,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:10:00,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 316 [2020-12-22 09:10:00,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:00,486 INFO L225 Difference]: With dead ends: 8399 [2020-12-22 09:10:00,486 INFO L226 Difference]: Without dead ends: 5650 [2020-12-22 09:10:00,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:00,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5650 states. [2020-12-22 09:10:00,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5650 to 5495. [2020-12-22 09:10:00,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5495 states. [2020-12-22 09:10:00,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5495 states to 5495 states and 8491 transitions. [2020-12-22 09:10:00,805 INFO L78 Accepts]: Start accepts. Automaton has 5495 states and 8491 transitions. Word has length 316 [2020-12-22 09:10:00,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:00,806 INFO L481 AbstractCegarLoop]: Abstraction has 5495 states and 8491 transitions. [2020-12-22 09:10:00,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:10:00,806 INFO L276 IsEmpty]: Start isEmpty. Operand 5495 states and 8491 transitions. [2020-12-22 09:10:00,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-12-22 09:10:00,819 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:00,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:00,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:10:00,820 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.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:00,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:00,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1009354821, now seen corresponding path program 1 times [2020-12-22 09:10:00,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:00,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123303049] [2020-12-22 09:10:00,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:00,975 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 09:10:00,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123303049] [2020-12-22 09:10:00,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:00,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:00,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15205136] [2020-12-22 09:10:00,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:00,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:00,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:00,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:00,978 INFO L87 Difference]: Start difference. First operand 5495 states and 8491 transitions. Second operand 3 states. [2020-12-22 09:10:01,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:01,555 INFO L93 Difference]: Finished difference Result 16418 states and 25357 transitions. [2020-12-22 09:10:01,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:10:01,556 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 316 [2020-12-22 09:10:01,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:01,620 INFO L225 Difference]: With dead ends: 16418 [2020-12-22 09:10:01,621 INFO L226 Difference]: Without dead ends: 10961 [2020-12-22 09:10:01,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:01,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10961 states. [2020-12-22 09:10:02,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10961 to 5514. [2020-12-22 09:10:02,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5514 states. [2020-12-22 09:10:02,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5514 states to 5514 states and 8519 transitions. [2020-12-22 09:10:02,060 INFO L78 Accepts]: Start accepts. Automaton has 5514 states and 8519 transitions. Word has length 316 [2020-12-22 09:10:02,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:02,061 INFO L481 AbstractCegarLoop]: Abstraction has 5514 states and 8519 transitions. [2020-12-22 09:10:02,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:10:02,061 INFO L276 IsEmpty]: Start isEmpty. Operand 5514 states and 8519 transitions. [2020-12-22 09:10:02,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-12-22 09:10:02,082 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:02,083 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:02,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:10:02,083 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.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:02,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:02,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1749363816, now seen corresponding path program 1 times [2020-12-22 09:10:02,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:02,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070061441] [2020-12-22 09:10:02,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:02,322 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 09:10:02,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070061441] [2020-12-22 09:10:02,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:02,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:02,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35743353] [2020-12-22 09:10:02,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:02,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:02,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:02,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:02,325 INFO L87 Difference]: Start difference. First operand 5514 states and 8519 transitions. Second operand 3 states. [2020-12-22 09:10:02,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:02,917 INFO L93 Difference]: Finished difference Result 16437 states and 25378 transitions. [2020-12-22 09:10:02,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:10:02,918 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 317 [2020-12-22 09:10:02,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:02,972 INFO L225 Difference]: With dead ends: 16437 [2020-12-22 09:10:02,973 INFO L226 Difference]: Without dead ends: 10979 [2020-12-22 09:10:02,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:02,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10979 states. [2020-12-22 09:10:03,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10979 to 5532. [2020-12-22 09:10:03,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5532 states. [2020-12-22 09:10:03,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5532 states to 5532 states and 8540 transitions. [2020-12-22 09:10:03,361 INFO L78 Accepts]: Start accepts. Automaton has 5532 states and 8540 transitions. Word has length 317 [2020-12-22 09:10:03,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:03,361 INFO L481 AbstractCegarLoop]: Abstraction has 5532 states and 8540 transitions. [2020-12-22 09:10:03,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:10:03,361 INFO L276 IsEmpty]: Start isEmpty. Operand 5532 states and 8540 transitions. [2020-12-22 09:10:03,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-12-22 09:10:03,374 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:03,375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:03,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:10:03,375 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.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:03,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:03,376 INFO L82 PathProgramCache]: Analyzing trace with hash 263221329, now seen corresponding path program 1 times [2020-12-22 09:10:03,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:03,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47610224] [2020-12-22 09:10:03,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:03,707 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 09:10:03,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47610224] [2020-12-22 09:10:03,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:03,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:03,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133331629] [2020-12-22 09:10:03,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:03,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:03,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:03,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:03,710 INFO L87 Difference]: Start difference. First operand 5532 states and 8540 transitions. Second operand 3 states. [2020-12-22 09:10:04,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:04,317 INFO L93 Difference]: Finished difference Result 16065 states and 24717 transitions. [2020-12-22 09:10:04,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:10:04,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 318 [2020-12-22 09:10:04,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:04,346 INFO L225 Difference]: With dead ends: 16065 [2020-12-22 09:10:04,353 INFO L226 Difference]: Without dead ends: 10774 [2020-12-22 09:10:04,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:04,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10774 states. [2020-12-22 09:10:05,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10774 to 10619. [2020-12-22 09:10:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10619 states. [2020-12-22 09:10:05,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10619 states to 10619 states and 16308 transitions. [2020-12-22 09:10:05,051 INFO L78 Accepts]: Start accepts. Automaton has 10619 states and 16308 transitions. Word has length 318 [2020-12-22 09:10:05,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:05,052 INFO L481 AbstractCegarLoop]: Abstraction has 10619 states and 16308 transitions. [2020-12-22 09:10:05,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:10:05,052 INFO L276 IsEmpty]: Start isEmpty. Operand 10619 states and 16308 transitions. [2020-12-22 09:10:05,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-12-22 09:10:05,076 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:05,076 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:05,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:10:05,077 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.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:05,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:05,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1501939950, now seen corresponding path program 1 times [2020-12-22 09:10:05,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:05,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111660106] [2020-12-22 09:10:05,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:05,740 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 09:10:05,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111660106] [2020-12-22 09:10:05,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:05,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:10:05,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556003515] [2020-12-22 09:10:05,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:10:05,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:05,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:10:05,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:10:05,742 INFO L87 Difference]: Start difference. First operand 10619 states and 16308 transitions. Second operand 5 states. [2020-12-22 09:10:06,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:06,899 INFO L93 Difference]: Finished difference Result 31165 states and 47761 transitions. [2020-12-22 09:10:06,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:10:06,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2020-12-22 09:10:06,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:06,945 INFO L225 Difference]: With dead ends: 31165 [2020-12-22 09:10:06,945 INFO L226 Difference]: Without dead ends: 20601 [2020-12-22 09:10:06,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:10:06,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20601 states. [2020-12-22 09:10:08,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20601 to 20452. [2020-12-22 09:10:08,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20452 states. [2020-12-22 09:10:08,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20452 states to 20452 states and 31157 transitions. [2020-12-22 09:10:08,433 INFO L78 Accepts]: Start accepts. Automaton has 20452 states and 31157 transitions. Word has length 318 [2020-12-22 09:10:08,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:08,433 INFO L481 AbstractCegarLoop]: Abstraction has 20452 states and 31157 transitions. [2020-12-22 09:10:08,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:10:08,434 INFO L276 IsEmpty]: Start isEmpty. Operand 20452 states and 31157 transitions. [2020-12-22 09:10:08,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-12-22 09:10:08,483 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:08,483 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:08,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:10:08,483 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.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:08,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:08,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1568598164, now seen corresponding path program 1 times [2020-12-22 09:10:08,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:08,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660360347] [2020-12-22 09:10:08,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:08,997 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 09:10:08,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660360347] [2020-12-22 09:10:08,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:08,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:08,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876898196] [2020-12-22 09:10:08,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:08,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:08,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:08,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:09,000 INFO L87 Difference]: Start difference. First operand 20452 states and 31157 transitions. Second operand 3 states. [2020-12-22 09:10:11,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:11,086 INFO L93 Difference]: Finished difference Result 59950 states and 91090 transitions. [2020-12-22 09:10:11,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:10:11,087 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 320 [2020-12-22 09:10:11,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:11,197 INFO L225 Difference]: With dead ends: 59950 [2020-12-22 09:10:11,198 INFO L226 Difference]: Without dead ends: 40015 [2020-12-22 09:10:11,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:11,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40015 states. [2020-12-22 09:10:13,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40015 to 39874. [2020-12-22 09:10:13,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39874 states. [2020-12-22 09:10:13,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39874 states to 39874 states and 60310 transitions. [2020-12-22 09:10:13,226 INFO L78 Accepts]: Start accepts. Automaton has 39874 states and 60310 transitions. Word has length 320 [2020-12-22 09:10:13,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:13,227 INFO L481 AbstractCegarLoop]: Abstraction has 39874 states and 60310 transitions. [2020-12-22 09:10:13,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:10:13,227 INFO L276 IsEmpty]: Start isEmpty. Operand 39874 states and 60310 transitions. [2020-12-22 09:10:13,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-12-22 09:10:13,279 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:13,279 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:13,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:10:13,280 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.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:13,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:13,280 INFO L82 PathProgramCache]: Analyzing trace with hash -534908087, now seen corresponding path program 1 times [2020-12-22 09:10:13,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:13,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573362980] [2020-12-22 09:10:13,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:14,040 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 09:10:14,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573362980] [2020-12-22 09:10:14,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:14,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:10:14,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266423961] [2020-12-22 09:10:14,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:10:14,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:14,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:10:14,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:10:14,043 INFO L87 Difference]: Start difference. First operand 39874 states and 60310 transitions. Second operand 5 states. [2020-12-22 09:10:17,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:17,330 INFO L93 Difference]: Finished difference Result 117451 states and 177232 transitions. [2020-12-22 09:10:17,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:10:17,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-12-22 09:10:17,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:17,481 INFO L225 Difference]: With dead ends: 117451 [2020-12-22 09:10:17,481 INFO L226 Difference]: Without dead ends: 77728 [2020-12-22 09:10:17,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:10:17,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77728 states. [2020-12-22 09:10:20,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77728 to 77617. [2020-12-22 09:10:20,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77617 states. [2020-12-22 09:10:21,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77617 states to 77617 states and 116266 transitions. [2020-12-22 09:10:21,047 INFO L78 Accepts]: Start accepts. Automaton has 77617 states and 116266 transitions. Word has length 320 [2020-12-22 09:10:21,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:21,048 INFO L481 AbstractCegarLoop]: Abstraction has 77617 states and 116266 transitions. [2020-12-22 09:10:21,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:10:21,048 INFO L276 IsEmpty]: Start isEmpty. Operand 77617 states and 116266 transitions. [2020-12-22 09:10:21,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-12-22 09:10:21,152 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:21,154 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:21,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:10:21,154 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.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:21,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:21,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1536550616, now seen corresponding path program 1 times [2020-12-22 09:10:21,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:21,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536992407] [2020-12-22 09:10:21,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:22,172 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 09:10:22,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536992407] [2020-12-22 09:10:22,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:22,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:10:22,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582922867] [2020-12-22 09:10:22,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:10:22,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:22,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:10:22,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:10:22,176 INFO L87 Difference]: Start difference. First operand 77617 states and 116266 transitions. Second operand 4 states. [2020-12-22 09:10:28,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:28,092 INFO L93 Difference]: Finished difference Result 229494 states and 343219 transitions. [2020-12-22 09:10:28,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:10:28,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 320 [2020-12-22 09:10:28,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:28,369 INFO L225 Difference]: With dead ends: 229494 [2020-12-22 09:10:28,369 INFO L226 Difference]: Without dead ends: 152159 [2020-12-22 09:10:28,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:10:28,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152159 states. [2020-12-22 09:10:35,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152159 to 151928. [2020-12-22 09:10:35,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151928 states. [2020-12-22 09:10:35,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151928 states to 151928 states and 225946 transitions. [2020-12-22 09:10:35,956 INFO L78 Accepts]: Start accepts. Automaton has 151928 states and 225946 transitions. Word has length 320 [2020-12-22 09:10:35,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:35,956 INFO L481 AbstractCegarLoop]: Abstraction has 151928 states and 225946 transitions. [2020-12-22 09:10:35,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:10:35,957 INFO L276 IsEmpty]: Start isEmpty. Operand 151928 states and 225946 transitions. [2020-12-22 09:10:36,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-12-22 09:10:36,101 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:36,101 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:36,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:10:36,102 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.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:36,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:36,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1861552830, now seen corresponding path program 1 times [2020-12-22 09:10:36,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:36,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119061293] [2020-12-22 09:10:36,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:36,547 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 09:10:36,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119061293] [2020-12-22 09:10:36,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:36,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:36,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065910210] [2020-12-22 09:10:36,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:36,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:36,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:36,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:36,551 INFO L87 Difference]: Start difference. First operand 151928 states and 225946 transitions. Second operand 3 states. [2020-12-22 09:10:47,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:47,526 INFO L93 Difference]: Finished difference Result 453092 states and 673326 transitions. [2020-12-22 09:10:47,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:10:47,527 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 322 [2020-12-22 09:10:47,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:47,985 INFO L225 Difference]: With dead ends: 453092 [2020-12-22 09:10:47,985 INFO L226 Difference]: Without dead ends: 301747 [2020-12-22 09:10:48,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:48,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301747 states. [2020-12-22 09:10:56,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301747 to 152086. [2020-12-22 09:10:56,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152086 states. [2020-12-22 09:10:57,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152086 states to 152086 states and 226156 transitions. [2020-12-22 09:10:57,061 INFO L78 Accepts]: Start accepts. Automaton has 152086 states and 226156 transitions. Word has length 322 [2020-12-22 09:10:57,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:57,062 INFO L481 AbstractCegarLoop]: Abstraction has 152086 states and 226156 transitions. [2020-12-22 09:10:57,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:10:57,062 INFO L276 IsEmpty]: Start isEmpty. Operand 152086 states and 226156 transitions. [2020-12-22 09:10:57,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-12-22 09:10:57,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:57,502 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:57,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:10:57,502 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.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:57,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:57,502 INFO L82 PathProgramCache]: Analyzing trace with hash 727403069, now seen corresponding path program 1 times [2020-12-22 09:10:57,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:57,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898012531] [2020-12-22 09:10:57,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:57,727 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 09:10:57,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898012531] [2020-12-22 09:10:57,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:57,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:57,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102717455] [2020-12-22 09:10:57,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:57,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:57,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:57,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:57,730 INFO L87 Difference]: Start difference. First operand 152086 states and 226156 transitions. Second operand 3 states. [2020-12-22 09:11:10,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:10,324 INFO L93 Difference]: Finished difference Result 447865 states and 664466 transitions. [2020-12-22 09:11:10,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:11:10,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 322 [2020-12-22 09:11:10,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:10,940 INFO L225 Difference]: With dead ends: 447865 [2020-12-22 09:11:10,940 INFO L226 Difference]: Without dead ends: 298450 [2020-12-22 09:11:11,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:11,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298450 states. [2020-12-22 09:11:25,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298450 to 298219. [2020-12-22 09:11:25,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298219 states. [2020-12-22 09:11:26,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298219 states to 298219 states and 440364 transitions. [2020-12-22 09:11:26,662 INFO L78 Accepts]: Start accepts. Automaton has 298219 states and 440364 transitions. Word has length 322 [2020-12-22 09:11:26,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:26,663 INFO L481 AbstractCegarLoop]: Abstraction has 298219 states and 440364 transitions. [2020-12-22 09:11:26,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:11:26,663 INFO L276 IsEmpty]: Start isEmpty. Operand 298219 states and 440364 transitions. [2020-12-22 09:11:26,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-12-22 09:11:26,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:26,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:11:26,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:11:26,910 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.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:26,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:26,911 INFO L82 PathProgramCache]: Analyzing trace with hash -271783253, now seen corresponding path program 1 times [2020-12-22 09:11:26,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:26,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788155953] [2020-12-22 09:11:26,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:27,578 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 09:11:27,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788155953] [2020-12-22 09:11:27,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:27,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:11:27,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610856558] [2020-12-22 09:11:27,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:11:27,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:27,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:11:27,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:27,582 INFO L87 Difference]: Start difference. First operand 298219 states and 440364 transitions. Second operand 3 states. [2020-12-22 09:11:55,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:55,597 INFO L93 Difference]: Finished difference Result 891683 states and 1316251 transitions. [2020-12-22 09:11:55,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:11:55,598 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 323 [2020-12-22 09:11:55,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:56,849 INFO L225 Difference]: With dead ends: 891683 [2020-12-22 09:11:56,849 INFO L226 Difference]: Without dead ends: 595340 [2020-12-22 09:11:57,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:57,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595340 states. [2020-12-22 09:12:15,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595340 to 298529. [2020-12-22 09:12:15,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298529 states. [2020-12-22 09:12:16,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298529 states to 298529 states and 440720 transitions. [2020-12-22 09:12:16,805 INFO L78 Accepts]: Start accepts. Automaton has 298529 states and 440720 transitions. Word has length 323 [2020-12-22 09:12:16,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:12:16,805 INFO L481 AbstractCegarLoop]: Abstraction has 298529 states and 440720 transitions. [2020-12-22 09:12:16,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:12:16,805 INFO L276 IsEmpty]: Start isEmpty. Operand 298529 states and 440720 transitions. [2020-12-22 09:12:17,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-12-22 09:12:17,053 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:12:17,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:12:17,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:12:17,054 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.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:12:17,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:12:17,054 INFO L82 PathProgramCache]: Analyzing trace with hash -2137092136, now seen corresponding path program 1 times [2020-12-22 09:12:17,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:12:17,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127860994] [2020-12-22 09:12:17,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:12:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:12:17,830 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 09:12:17,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127860994] [2020-12-22 09:12:17,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:12:17,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:12:17,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213890454] [2020-12-22 09:12:17,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:12:17,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:12:17,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:12:17,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:17,833 INFO L87 Difference]: Start difference. First operand 298529 states and 440720 transitions. Second operand 3 states. [2020-12-22 09:12:46,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:12:46,308 INFO L93 Difference]: Finished difference Result 879640 states and 1295934 transitions. [2020-12-22 09:12:46,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:12:46,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 324 [2020-12-22 09:12:46,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:12:47,521 INFO L225 Difference]: With dead ends: 879640 [2020-12-22 09:12:47,522 INFO L226 Difference]: Without dead ends: 584917 [2020-12-22 09:12:47,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:48,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584917 states.