/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+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:10:02,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:10:02,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:10:02,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:10:02,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:10:02,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:10:02,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:10:02,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:10:02,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:10:02,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:10:02,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:10:02,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:10:02,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:10:02,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:10:02,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:10:02,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:10:02,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:10:02,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:10:02,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:10:02,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:10:02,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:10:02,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:10:02,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:10:02,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:10:02,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 09:10:02,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 09:10:02,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 09:10:02,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 09:10:02,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 09:10:02,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 09:10:02,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 09:10:02,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 09:10:02,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 09:10:02,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 09:10:02,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 09:10:02,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 09:10:02,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 09:10:02,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 09:10:02,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:10:02,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:10:02,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:10:02,795 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:10:02,858 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:10:02,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:10:02,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:10:02,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:10:02,864 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:10:02,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:10:02,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:10:02,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:10:02,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:10:02,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:10:02,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:10:02,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:10:02,868 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:10:02,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:10:02,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:10:02,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:10:02,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:10:02,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:10:02,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:10:02,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:10:02,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:10:02,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:10:02,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:10:02,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:10:02,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:10:02,873 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:10:03,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:10:03,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:10:03,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:10:03,327 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:10:03,328 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:10:03,329 INFO L432 ainManager$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+nlh-reducer.c [2020-12-22 09:10:03,409 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5038a1cc7/40c6f47bae4e46199c23b79fcd919e8b/FLAG4f250eec0 [2020-12-22 09:10:04,245 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:10:04,245 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+nlh-reducer.c [2020-12-22 09:10:04,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5038a1cc7/40c6f47bae4e46199c23b79fcd919e8b/FLAG4f250eec0 [2020-12-22 09:10:04,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5038a1cc7/40c6f47bae4e46199c23b79fcd919e8b [2020-12-22 09:10:04,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:10:04,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:10:04,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:10:04,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:10:04,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:10:04,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:10:04" (1/1) ... [2020-12-22 09:10:04,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fb329e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:04, skipping insertion in model container [2020-12-22 09:10:04,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:10:04" (1/1) ... [2020-12-22 09:10:04,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:10:04,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:10:05,372 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+nlh-reducer.c[34819,34832] [2020-12-22 09:10:05,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:10:05,621 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:10:06,026 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+nlh-reducer.c[34819,34832] [2020-12-22 09:10:06,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:10:06,227 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:10:06,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:06 WrapperNode [2020-12-22 09:10:06,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:10:06,230 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:10:06,230 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:10:06,230 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:10:06,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:06" (1/1) ... [2020-12-22 09:10:06,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:06" (1/1) ... [2020-12-22 09:10:06,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:10:06,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:10:06,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:10:06,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:10:06,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:06" (1/1) ... [2020-12-22 09:10:06,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:06" (1/1) ... [2020-12-22 09:10:06,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:06" (1/1) ... [2020-12-22 09:10:06,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:06" (1/1) ... [2020-12-22 09:10:06,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:06" (1/1) ... [2020-12-22 09:10:06,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:06" (1/1) ... [2020-12-22 09:10:06,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:06" (1/1) ... [2020-12-22 09:10:06,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:10:06,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:10:06,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:10:06,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:10:06,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:06" (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 09:10:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:10:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:10:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:10:06,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:10:09,300 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:10:09,301 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:10:09,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:10:09 BoogieIcfgContainer [2020-12-22 09:10:09,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:10:09,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:10:09,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:10:09,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:10:09,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:10:04" (1/3) ... [2020-12-22 09:10:09,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a7c10a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:10:09, skipping insertion in model container [2020-12-22 09:10:09,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:06" (2/3) ... [2020-12-22 09:10:09,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a7c10a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:10:09, skipping insertion in model container [2020-12-22 09:10:09,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:10:09" (3/3) ... [2020-12-22 09:10:09,320 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-12-22 09:10:09,327 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:10:09,333 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 09:10:09,353 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 09:10:09,402 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:10:09,402 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:10:09,402 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:10:09,402 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:10:09,403 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:10:09,403 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:10:09,403 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:10:09,403 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:10:09,435 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states. [2020-12-22 09:10:09,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-12-22 09:10:09,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:09,471 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 09:10:09,472 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:09,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:09,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1016279858, now seen corresponding path program 1 times [2020-12-22 09:10:09,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:09,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374813763] [2020-12-22 09:10:09,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:10,702 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 09:10:10,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374813763] [2020-12-22 09:10:10,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:10,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:10,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904652041] [2020-12-22 09:10:10,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:10,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:10,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:10,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:10,727 INFO L87 Difference]: Start difference. First operand 790 states. Second operand 3 states. [2020-12-22 09:10:11,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:11,051 INFO L93 Difference]: Finished difference Result 1423 states and 2503 transitions. [2020-12-22 09:10:11,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:10:11,053 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 320 [2020-12-22 09:10:11,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:11,086 INFO L225 Difference]: With dead ends: 1423 [2020-12-22 09:10:11,087 INFO L226 Difference]: Without dead ends: 1253 [2020-12-22 09:10:11,092 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 09:10:11,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2020-12-22 09:10:11,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1251. [2020-12-22 09:10:11,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1251 states. [2020-12-22 09:10:11,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1956 transitions. [2020-12-22 09:10:11,217 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1956 transitions. Word has length 320 [2020-12-22 09:10:11,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:11,219 INFO L481 AbstractCegarLoop]: Abstraction has 1251 states and 1956 transitions. [2020-12-22 09:10:11,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:10:11,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1956 transitions. [2020-12-22 09:10:11,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-12-22 09:10:11,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:11,228 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 09:10:11,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:10:11,229 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:11,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:11,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1186607043, now seen corresponding path program 1 times [2020-12-22 09:10:11,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:11,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454618267] [2020-12-22 09:10:11,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:12,339 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 09:10:12,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454618267] [2020-12-22 09:10:12,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:12,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:10:12,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467629131] [2020-12-22 09:10:12,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:10:12,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:12,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:10:12,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:10:12,350 INFO L87 Difference]: Start difference. First operand 1251 states and 1956 transitions. Second operand 4 states. [2020-12-22 09:10:12,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:12,681 INFO L93 Difference]: Finished difference Result 3691 states and 5763 transitions. [2020-12-22 09:10:12,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:10:12,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 320 [2020-12-22 09:10:12,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:12,697 INFO L225 Difference]: With dead ends: 3691 [2020-12-22 09:10:12,698 INFO L226 Difference]: Without dead ends: 2451 [2020-12-22 09:10:12,704 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 09:10:12,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2020-12-22 09:10:12,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 2449. [2020-12-22 09:10:12,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2449 states. [2020-12-22 09:10:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2449 states to 2449 states and 3805 transitions. [2020-12-22 09:10:12,822 INFO L78 Accepts]: Start accepts. Automaton has 2449 states and 3805 transitions. Word has length 320 [2020-12-22 09:10:12,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:12,823 INFO L481 AbstractCegarLoop]: Abstraction has 2449 states and 3805 transitions. [2020-12-22 09:10:12,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:10:12,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2449 states and 3805 transitions. [2020-12-22 09:10:12,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-12-22 09:10:12,833 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:12,834 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 09:10:12,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:10:12,834 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:12,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:12,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1005675603, now seen corresponding path program 1 times [2020-12-22 09:10:12,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:12,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298093562] [2020-12-22 09:10:12,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:13,297 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 09:10:13,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298093562] [2020-12-22 09:10:13,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:13,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:13,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953372781] [2020-12-22 09:10:13,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:13,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:13,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:13,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:13,305 INFO L87 Difference]: Start difference. First operand 2449 states and 3805 transitions. Second operand 3 states. [2020-12-22 09:10:13,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:13,596 INFO L93 Difference]: Finished difference Result 7128 states and 11035 transitions. [2020-12-22 09:10:13,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:10:13,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 322 [2020-12-22 09:10:13,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:13,623 INFO L225 Difference]: With dead ends: 7128 [2020-12-22 09:10:13,624 INFO L226 Difference]: Without dead ends: 4804 [2020-12-22 09:10:13,629 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 09:10:13,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4804 states. [2020-12-22 09:10:13,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4804 to 4802. [2020-12-22 09:10:13,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4802 states. [2020-12-22 09:10:13,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4802 states to 4802 states and 7419 transitions. [2020-12-22 09:10:13,935 INFO L78 Accepts]: Start accepts. Automaton has 4802 states and 7419 transitions. Word has length 322 [2020-12-22 09:10:13,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:13,944 INFO L481 AbstractCegarLoop]: Abstraction has 4802 states and 7419 transitions. [2020-12-22 09:10:13,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:10:13,945 INFO L276 IsEmpty]: Start isEmpty. Operand 4802 states and 7419 transitions. [2020-12-22 09:10:13,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-12-22 09:10:13,958 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:13,959 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 09:10:13,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:10:13,959 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:13,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:13,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1227155250, now seen corresponding path program 1 times [2020-12-22 09:10:13,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:13,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689282761] [2020-12-22 09:10:13,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:14,154 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 09:10:14,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689282761] [2020-12-22 09:10:14,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:14,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:14,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370782007] [2020-12-22 09:10:14,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:14,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:14,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:14,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:14,159 INFO L87 Difference]: Start difference. First operand 4802 states and 7419 transitions. Second operand 3 states. [2020-12-22 09:10:14,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:14,601 INFO L93 Difference]: Finished difference Result 14339 states and 22141 transitions. [2020-12-22 09:10:14,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:10:14,601 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 322 [2020-12-22 09:10:14,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:14,652 INFO L225 Difference]: With dead ends: 14339 [2020-12-22 09:10:14,652 INFO L226 Difference]: Without dead ends: 9575 [2020-12-22 09:10:14,665 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 09:10:14,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9575 states. [2020-12-22 09:10:15,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9575 to 4821. [2020-12-22 09:10:15,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4821 states. [2020-12-22 09:10:15,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4821 states to 4821 states and 7447 transitions. [2020-12-22 09:10:15,103 INFO L78 Accepts]: Start accepts. Automaton has 4821 states and 7447 transitions. Word has length 322 [2020-12-22 09:10:15,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:15,103 INFO L481 AbstractCegarLoop]: Abstraction has 4821 states and 7447 transitions. [2020-12-22 09:10:15,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:10:15,103 INFO L276 IsEmpty]: Start isEmpty. Operand 4821 states and 7447 transitions. [2020-12-22 09:10:15,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-12-22 09:10:15,118 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:15,118 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 09:10:15,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:10:15,119 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:15,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:15,120 INFO L82 PathProgramCache]: Analyzing trace with hash 706446803, now seen corresponding path program 1 times [2020-12-22 09:10:15,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:15,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882167413] [2020-12-22 09:10:15,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:15,369 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 09:10:15,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882167413] [2020-12-22 09:10:15,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:15,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:15,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853655768] [2020-12-22 09:10:15,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:15,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:15,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:15,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:15,374 INFO L87 Difference]: Start difference. First operand 4821 states and 7447 transitions. Second operand 3 states. [2020-12-22 09:10:15,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:15,964 INFO L93 Difference]: Finished difference Result 14358 states and 22162 transitions. [2020-12-22 09:10:15,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:10:15,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 323 [2020-12-22 09:10:15,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:16,035 INFO L225 Difference]: With dead ends: 14358 [2020-12-22 09:10:16,036 INFO L226 Difference]: Without dead ends: 9593 [2020-12-22 09:10:16,048 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 09:10:16,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9593 states. [2020-12-22 09:10:16,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9593 to 4839. [2020-12-22 09:10:16,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4839 states. [2020-12-22 09:10:16,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4839 states to 4839 states and 7468 transitions. [2020-12-22 09:10:16,491 INFO L78 Accepts]: Start accepts. Automaton has 4839 states and 7468 transitions. Word has length 323 [2020-12-22 09:10:16,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:16,491 INFO L481 AbstractCegarLoop]: Abstraction has 4839 states and 7468 transitions. [2020-12-22 09:10:16,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:10:16,492 INFO L276 IsEmpty]: Start isEmpty. Operand 4839 states and 7468 transitions. [2020-12-22 09:10:16,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-12-22 09:10:16,508 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:16,508 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 09:10:16,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:10:16,509 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:16,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:16,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1589061576, now seen corresponding path program 1 times [2020-12-22 09:10:16,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:16,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254471390] [2020-12-22 09:10:16,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:16,850 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 09:10:16,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254471390] [2020-12-22 09:10:16,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:16,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:16,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793007345] [2020-12-22 09:10:16,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:16,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:16,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:16,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:16,856 INFO L87 Difference]: Start difference. First operand 4839 states and 7468 transitions. Second operand 3 states. [2020-12-22 09:10:17,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:17,387 INFO L93 Difference]: Finished difference Result 13994 states and 21517 transitions. [2020-12-22 09:10:17,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:10:17,388 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 324 [2020-12-22 09:10:17,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:17,413 INFO L225 Difference]: With dead ends: 13994 [2020-12-22 09:10:17,413 INFO L226 Difference]: Without dead ends: 9396 [2020-12-22 09:10:17,424 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 09:10:17,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9396 states. [2020-12-22 09:10:18,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9396 to 9394. [2020-12-22 09:10:18,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9394 states. [2020-12-22 09:10:18,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9394 states to 9394 states and 14396 transitions. [2020-12-22 09:10:18,045 INFO L78 Accepts]: Start accepts. Automaton has 9394 states and 14396 transitions. Word has length 324 [2020-12-22 09:10:18,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:18,046 INFO L481 AbstractCegarLoop]: Abstraction has 9394 states and 14396 transitions. [2020-12-22 09:10:18,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:10:18,046 INFO L276 IsEmpty]: Start isEmpty. Operand 9394 states and 14396 transitions. [2020-12-22 09:10:18,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-12-22 09:10:18,069 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:18,070 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 09:10:18,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:10:18,070 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:18,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:18,071 INFO L82 PathProgramCache]: Analyzing trace with hash -899885403, now seen corresponding path program 1 times [2020-12-22 09:10:18,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:18,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102212840] [2020-12-22 09:10:18,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:18,727 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 09:10:18,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102212840] [2020-12-22 09:10:18,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:18,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:10:18,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160381177] [2020-12-22 09:10:18,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:10:18,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:18,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:10:18,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:10:18,731 INFO L87 Difference]: Start difference. First operand 9394 states and 14396 transitions. Second operand 5 states. [2020-12-22 09:10:20,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:20,051 INFO L93 Difference]: Finished difference Result 27524 states and 42093 transitions. [2020-12-22 09:10:20,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:10:20,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-12-22 09:10:20,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:20,104 INFO L225 Difference]: With dead ends: 27524 [2020-12-22 09:10:20,104 INFO L226 Difference]: Without dead ends: 18185 [2020-12-22 09:10:20,123 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 09:10:20,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18185 states. [2020-12-22 09:10:21,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18185 to 18183. [2020-12-22 09:10:21,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18183 states. [2020-12-22 09:10:21,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18183 states to 18183 states and 27633 transitions. [2020-12-22 09:10:21,576 INFO L78 Accepts]: Start accepts. Automaton has 18183 states and 27633 transitions. Word has length 324 [2020-12-22 09:10:21,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:21,577 INFO L481 AbstractCegarLoop]: Abstraction has 18183 states and 27633 transitions. [2020-12-22 09:10:21,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:10:21,577 INFO L276 IsEmpty]: Start isEmpty. Operand 18183 states and 27633 transitions. [2020-12-22 09:10:21,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-12-22 09:10:21,618 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:21,618 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, 1, 1] [2020-12-22 09:10:21,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:10:21,619 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:21,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:21,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1502929468, now seen corresponding path program 1 times [2020-12-22 09:10:21,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:21,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614159029] [2020-12-22 09:10:21,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:10:22,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614159029] [2020-12-22 09:10:22,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:22,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:10:22,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729111099] [2020-12-22 09:10:22,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:10:22,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:22,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:10:22,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:10:22,194 INFO L87 Difference]: Start difference. First operand 18183 states and 27633 transitions. Second operand 5 states. [2020-12-22 09:10:24,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:24,236 INFO L93 Difference]: Finished difference Result 53470 states and 81104 transitions. [2020-12-22 09:10:24,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:10:24,237 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-12-22 09:10:24,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:24,320 INFO L225 Difference]: With dead ends: 53470 [2020-12-22 09:10:24,320 INFO L226 Difference]: Without dead ends: 35404 [2020-12-22 09:10:24,350 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 09:10:24,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35404 states. [2020-12-22 09:10:26,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35404 to 35402. [2020-12-22 09:10:26,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35402 states. [2020-12-22 09:10:26,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35402 states to 35402 states and 53372 transitions. [2020-12-22 09:10:26,661 INFO L78 Accepts]: Start accepts. Automaton has 35402 states and 53372 transitions. Word has length 326 [2020-12-22 09:10:26,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:26,662 INFO L481 AbstractCegarLoop]: Abstraction has 35402 states and 53372 transitions. [2020-12-22 09:10:26,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:10:26,662 INFO L276 IsEmpty]: Start isEmpty. Operand 35402 states and 53372 transitions. [2020-12-22 09:10:26,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-12-22 09:10:26,730 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:26,731 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, 1, 1] [2020-12-22 09:10:26,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:10:26,731 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:26,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:26,732 INFO L82 PathProgramCache]: Analyzing trace with hash -854896249, now seen corresponding path program 1 times [2020-12-22 09:10:26,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:26,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327252088] [2020-12-22 09:10:26,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:27,171 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 09:10:27,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327252088] [2020-12-22 09:10:27,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:27,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:10:27,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125924522] [2020-12-22 09:10:27,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:10:27,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:27,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:10:27,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:10:27,179 INFO L87 Difference]: Start difference. First operand 35402 states and 53372 transitions. Second operand 4 states. [2020-12-22 09:10:30,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:30,206 INFO L93 Difference]: Finished difference Result 104364 states and 157065 transitions. [2020-12-22 09:10:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:10:30,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-12-22 09:10:30,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:30,356 INFO L225 Difference]: With dead ends: 104364 [2020-12-22 09:10:30,356 INFO L226 Difference]: Without dead ends: 69192 [2020-12-22 09:10:30,406 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 09:10:30,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69192 states. [2020-12-22 09:10:34,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69192 to 69190. [2020-12-22 09:10:34,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69190 states. [2020-12-22 09:10:34,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69190 states to 69190 states and 103480 transitions. [2020-12-22 09:10:34,885 INFO L78 Accepts]: Start accepts. Automaton has 69190 states and 103480 transitions. Word has length 326 [2020-12-22 09:10:34,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:34,886 INFO L481 AbstractCegarLoop]: Abstraction has 69190 states and 103480 transitions. [2020-12-22 09:10:34,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:10:34,886 INFO L276 IsEmpty]: Start isEmpty. Operand 69190 states and 103480 transitions. [2020-12-22 09:10:34,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-12-22 09:10:34,969 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:34,970 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, 1, 1, 1, 1] [2020-12-22 09:10:34,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:10:34,970 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:34,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:34,971 INFO L82 PathProgramCache]: Analyzing trace with hash -585132120, now seen corresponding path program 1 times [2020-12-22 09:10:34,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:34,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104610344] [2020-12-22 09:10:34,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:35,235 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 09:10:35,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104610344] [2020-12-22 09:10:35,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:35,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:35,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729465521] [2020-12-22 09:10:35,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:35,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:35,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:35,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:35,238 INFO L87 Difference]: Start difference. First operand 69190 states and 103480 transitions. Second operand 3 states. [2020-12-22 09:10:41,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:41,082 INFO L93 Difference]: Finished difference Result 203290 states and 303280 transitions. [2020-12-22 09:10:41,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:10:41,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 328 [2020-12-22 09:10:41,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:41,342 INFO L225 Difference]: With dead ends: 203290 [2020-12-22 09:10:41,343 INFO L226 Difference]: Without dead ends: 135480 [2020-12-22 09:10:41,453 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 09:10:41,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135480 states. [2020-12-22 09:10:48,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135480 to 135478. [2020-12-22 09:10:48,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135478 states. [2020-12-22 09:10:48,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135478 states to 135478 states and 201078 transitions. [2020-12-22 09:10:48,747 INFO L78 Accepts]: Start accepts. Automaton has 135478 states and 201078 transitions. Word has length 328 [2020-12-22 09:10:48,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:48,747 INFO L481 AbstractCegarLoop]: Abstraction has 135478 states and 201078 transitions. [2020-12-22 09:10:48,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:10:48,748 INFO L276 IsEmpty]: Start isEmpty. Operand 135478 states and 201078 transitions. [2020-12-22 09:10:48,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-12-22 09:10:48,936 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:48,937 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, 1, 1, 1, 1] [2020-12-22 09:10:48,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:10:48,937 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:48,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:48,938 INFO L82 PathProgramCache]: Analyzing trace with hash -710792467, now seen corresponding path program 1 times [2020-12-22 09:10:48,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:48,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317912777] [2020-12-22 09:10:48,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:49,393 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 09:10:49,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317912777] [2020-12-22 09:10:49,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:49,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:49,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056236463] [2020-12-22 09:10:49,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:49,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:49,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:49,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:49,398 INFO L87 Difference]: Start difference. First operand 135478 states and 201078 transitions. Second operand 3 states. [2020-12-22 09:11:00,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:00,139 INFO L93 Difference]: Finished difference Result 405310 states and 601410 transitions. [2020-12-22 09:11:00,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:11:00,140 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 328 [2020-12-22 09:11:00,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:00,850 INFO L225 Difference]: With dead ends: 405310 [2020-12-22 09:11:00,850 INFO L226 Difference]: Without dead ends: 270494 [2020-12-22 09:11:00,995 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 09:11:01,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270494 states. [2020-12-22 09:11:09,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270494 to 135688. [2020-12-22 09:11:09,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135688 states. [2020-12-22 09:11:09,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135688 states to 135688 states and 201390 transitions. [2020-12-22 09:11:09,533 INFO L78 Accepts]: Start accepts. Automaton has 135688 states and 201390 transitions. Word has length 328 [2020-12-22 09:11:09,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:09,533 INFO L481 AbstractCegarLoop]: Abstraction has 135688 states and 201390 transitions. [2020-12-22 09:11:09,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:11:09,533 INFO L276 IsEmpty]: Start isEmpty. Operand 135688 states and 201390 transitions. [2020-12-22 09:11:09,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-12-22 09:11:09,656 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:09,657 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, 1, 1, 1, 1, 1] [2020-12-22 09:11:09,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:11:09,657 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:09,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:09,658 INFO L82 PathProgramCache]: Analyzing trace with hash -772630862, now seen corresponding path program 1 times [2020-12-22 09:11:09,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:09,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153158557] [2020-12-22 09:11:09,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:10,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:11:10,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153158557] [2020-12-22 09:11:10,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:10,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:11:10,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597899908] [2020-12-22 09:11:10,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:11:10,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:10,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:11:10,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:10,106 INFO L87 Difference]: Start difference. First operand 135688 states and 201390 transitions. Second operand 3 states. [2020-12-22 09:11:22,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:22,284 INFO L93 Difference]: Finished difference Result 405498 states and 601616 transitions. [2020-12-22 09:11:22,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:11:22,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 329 [2020-12-22 09:11:22,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:22,701 INFO L225 Difference]: With dead ends: 405498 [2020-12-22 09:11:22,702 INFO L226 Difference]: Without dead ends: 270672 [2020-12-22 09:11:23,127 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 09:11:23,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270672 states. [2020-12-22 09:11:32,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270672 to 135918. [2020-12-22 09:11:32,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135918 states. [2020-12-22 09:11:32,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135918 states to 135918 states and 201654 transitions. [2020-12-22 09:11:32,426 INFO L78 Accepts]: Start accepts. Automaton has 135918 states and 201654 transitions. Word has length 329 [2020-12-22 09:11:32,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:32,426 INFO L481 AbstractCegarLoop]: Abstraction has 135918 states and 201654 transitions. [2020-12-22 09:11:32,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:11:32,426 INFO L276 IsEmpty]: Start isEmpty. Operand 135918 states and 201654 transitions. [2020-12-22 09:11:32,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-12-22 09:11:32,558 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:32,558 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, 1, 1, 1, 1, 1, 1] [2020-12-22 09:11:32,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:11:32,558 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:32,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:32,559 INFO L82 PathProgramCache]: Analyzing trace with hash 2027125024, now seen corresponding path program 1 times [2020-12-22 09:11:32,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:32,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138194487] [2020-12-22 09:11:32,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:33,576 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 09:11:33,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138194487] [2020-12-22 09:11:33,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:33,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:11:33,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978016365] [2020-12-22 09:11:33,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:11:33,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:33,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:11:33,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:11:33,581 INFO L87 Difference]: Start difference. First operand 135918 states and 201654 transitions. Second operand 5 states. [2020-12-22 09:11:47,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:47,889 INFO L93 Difference]: Finished difference Result 399549 states and 591511 transitions. [2020-12-22 09:11:47,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:11:47,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2020-12-22 09:11:47,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:48,292 INFO L225 Difference]: With dead ends: 399549 [2020-12-22 09:11:48,292 INFO L226 Difference]: Without dead ends: 264212 [2020-12-22 09:11:48,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:11:48,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264212 states. [2020-12-22 09:12:04,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264212 to 264210. [2020-12-22 09:12:04,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264210 states. [2020-12-22 09:12:05,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264210 states to 264210 states and 388508 transitions. [2020-12-22 09:12:05,317 INFO L78 Accepts]: Start accepts. Automaton has 264210 states and 388508 transitions. Word has length 330 [2020-12-22 09:12:05,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:12:05,317 INFO L481 AbstractCegarLoop]: Abstraction has 264210 states and 388508 transitions. [2020-12-22 09:12:05,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:12:05,317 INFO L276 IsEmpty]: Start isEmpty. Operand 264210 states and 388508 transitions. [2020-12-22 09:12:05,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-12-22 09:12:05,579 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:12:05,580 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:12:05,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:12:05,580 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:12:05,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:12:05,581 INFO L82 PathProgramCache]: Analyzing trace with hash 2131703408, now seen corresponding path program 1 times [2020-12-22 09:12:05,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:12:05,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606998601] [2020-12-22 09:12:05,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:12:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:12:06,669 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 09:12:06,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606998601] [2020-12-22 09:12:06,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:12:06,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:12:06,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132349888] [2020-12-22 09:12:06,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:12:06,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:12:06,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:12:06,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:12:06,673 INFO L87 Difference]: Start difference. First operand 264210 states and 388508 transitions. Second operand 4 states. [2020-12-22 09:12:24,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:12:24,589 INFO L93 Difference]: Finished difference Result 548615 states and 806570 transitions. [2020-12-22 09:12:24,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:12:24,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2020-12-22 09:12:24,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:12:25,078 INFO L225 Difference]: With dead ends: 548615 [2020-12-22 09:12:25,079 INFO L226 Difference]: Without dead ends: 286023 [2020-12-22 09:12:25,339 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 09:12:25,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286023 states. [2020-12-22 09:12:42,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286023 to 264445. [2020-12-22 09:12:42,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264445 states. [2020-12-22 09:12:43,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264445 states to 264445 states and 388694 transitions. [2020-12-22 09:12:43,571 INFO L78 Accepts]: Start accepts. Automaton has 264445 states and 388694 transitions. Word has length 332 [2020-12-22 09:12:43,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:12:43,572 INFO L481 AbstractCegarLoop]: Abstraction has 264445 states and 388694 transitions. [2020-12-22 09:12:43,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:12:43,572 INFO L276 IsEmpty]: Start isEmpty. Operand 264445 states and 388694 transitions. [2020-12-22 09:12:43,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-12-22 09:12:43,857 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:12:43,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:12:43,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:12:43,859 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:12:43,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:12:43,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1894625523, now seen corresponding path program 1 times [2020-12-22 09:12:43,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:12:43,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077289847] [2020-12-22 09:12:43,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:12:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:12:44,468 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 09:12:44,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077289847] [2020-12-22 09:12:44,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:12:44,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:12:44,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844373167] [2020-12-22 09:12:44,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:12:44,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:12:44,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:12:44,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:44,471 INFO L87 Difference]: Start difference. First operand 264445 states and 388694 transitions. Second operand 3 states. [2020-12-22 09:13:15,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:15,519 INFO L93 Difference]: Finished difference Result 786991 states and 1156103 transitions. [2020-12-22 09:13:15,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:15,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 334 [2020-12-22 09:13:15,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:16,520 INFO L225 Difference]: With dead ends: 786991 [2020-12-22 09:13:16,521 INFO L226 Difference]: Without dead ends: 525024 [2020-12-22 09:13:16,896 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 09:13:17,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525024 states. [2020-12-22 09:13:38,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525024 to 264918. [2020-12-22 09:13:38,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264918 states. [2020-12-22 09:13:39,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264918 states to 264918 states and 389275 transitions. [2020-12-22 09:13:39,205 INFO L78 Accepts]: Start accepts. Automaton has 264918 states and 389275 transitions. Word has length 334 [2020-12-22 09:13:39,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:39,205 INFO L481 AbstractCegarLoop]: Abstraction has 264918 states and 389275 transitions. [2020-12-22 09:13:39,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:39,206 INFO L276 IsEmpty]: Start isEmpty. Operand 264918 states and 389275 transitions. [2020-12-22 09:13:39,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-12-22 09:13:39,481 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:39,481 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:13:39,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:13:39,482 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:39,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:39,483 INFO L82 PathProgramCache]: Analyzing trace with hash 57572492, now seen corresponding path program 1 times [2020-12-22 09:13:39,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:39,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261710414] [2020-12-22 09:13:39,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:13:39,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261710414] [2020-12-22 09:13:39,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:39,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:39,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309781816] [2020-12-22 09:13:39,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:39,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:39,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:39,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:39,638 INFO L87 Difference]: Start difference. First operand 264918 states and 389275 transitions. Second operand 3 states.