/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.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:12:25,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:12:25,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:12:25,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:12:25,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:12:25,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:12:25,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:12:25,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:12:25,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:12:25,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:12:25,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:12:25,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:12:25,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:12:25,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:12:25,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:12:25,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:12:25,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:12:25,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:12:25,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:12:25,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:12:25,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:12:25,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:12:25,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:12:25,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:12:25,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:12:25,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:12:25,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:12:25,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:12:25,891 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:12:25,929 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:12:25,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:12:25,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:12:25,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:12:25,934 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:12:25,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:12:25,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:12:25,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:12:25,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:12:25,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:12:25,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:12:25,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:12:25,939 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:12:25,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:12:25,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:12:25,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:12:25,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:12:25,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:12:25,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:12:25,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:12:25,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:12:25,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:12:25,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:12:25,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:12:25,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:12:25,944 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:12:26,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:12:26,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:12:26,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:12:26,434 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:12:26,434 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:12:26,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 09:12:26,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fb73f38c/e7d12518be264cd19ef086a3ad58a59c/FLAG637fb40c3 [2020-12-22 09:12:27,400 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:12:27,401 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 09:12:27,455 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fb73f38c/e7d12518be264cd19ef086a3ad58a59c/FLAG637fb40c3 [2020-12-22 09:12:27,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fb73f38c/e7d12518be264cd19ef086a3ad58a59c [2020-12-22 09:12:27,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:12:27,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:12:27,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:12:27,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:12:27,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:12:28,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:12:27" (1/1) ... [2020-12-22 09:12:28,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cb0301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:28, skipping insertion in model container [2020-12-22 09:12:28,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:12:27" (1/1) ... [2020-12-22 09:12:28,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:12:28,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:12:29,700 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.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[54562,54575] [2020-12-22 09:12:30,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:12:30,111 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:12:30,894 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.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[54562,54575] [2020-12-22 09:12:31,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:12:31,294 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:12:31,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:31 WrapperNode [2020-12-22 09:12:31,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:12:31,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:12:31,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:12:31,296 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:12:31,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:31" (1/1) ... [2020-12-22 09:12:31,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:31" (1/1) ... [2020-12-22 09:12:31,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:12:31,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:12:31,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:12:31,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:12:31,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:31" (1/1) ... [2020-12-22 09:12:31,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:31" (1/1) ... [2020-12-22 09:12:31,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:31" (1/1) ... [2020-12-22 09:12:31,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:31" (1/1) ... [2020-12-22 09:12:31,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:31" (1/1) ... [2020-12-22 09:12:31,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:31" (1/1) ... [2020-12-22 09:12:31,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:31" (1/1) ... [2020-12-22 09:12:31,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:12:31,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:12:31,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:12:31,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:12:31,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:31" (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 09:12:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:12:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:12:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:12:31,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:12:36,284 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:12:36,285 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:12:36,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:12:36 BoogieIcfgContainer [2020-12-22 09:12:36,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:12:36,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:12:36,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:12:36,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:12:36,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:12:27" (1/3) ... [2020-12-22 09:12:36,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7381a857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:12:36, skipping insertion in model container [2020-12-22 09:12:36,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:31" (2/3) ... [2020-12-22 09:12:36,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7381a857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:12:36, skipping insertion in model container [2020-12-22 09:12:36,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:12:36" (3/3) ... [2020-12-22 09:12:36,301 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 09:12:36,312 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:12:36,318 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 09:12:36,338 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 09:12:36,390 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:12:36,390 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:12:36,390 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:12:36,390 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:12:36,390 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:12:36,390 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:12:36,391 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:12:36,391 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:12:36,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states. [2020-12-22 09:12:36,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2020-12-22 09:12:36,497 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:12:36,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:12:36,500 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:12:36,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:12:36,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1633313524, now seen corresponding path program 1 times [2020-12-22 09:12:36,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:12:36,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751266401] [2020-12-22 09:12:36,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:12:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:12:38,114 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 09:12:38,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751266401] [2020-12-22 09:12:38,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:12:38,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:12:38,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118595113] [2020-12-22 09:12:38,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:12:38,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:12:38,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:12:38,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:38,146 INFO L87 Difference]: Start difference. First operand 1444 states. Second operand 3 states. [2020-12-22 09:12:38,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:12:38,522 INFO L93 Difference]: Finished difference Result 2481 states and 4416 transitions. [2020-12-22 09:12:38,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:12:38,524 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 492 [2020-12-22 09:12:38,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:12:38,574 INFO L225 Difference]: With dead ends: 2481 [2020-12-22 09:12:38,574 INFO L226 Difference]: Without dead ends: 2182 [2020-12-22 09:12:38,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:38,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2020-12-22 09:12:38,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 2180. [2020-12-22 09:12:38,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2180 states. [2020-12-22 09:12:38,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 3559 transitions. [2020-12-22 09:12:38,821 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 3559 transitions. Word has length 492 [2020-12-22 09:12:38,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:12:38,822 INFO L481 AbstractCegarLoop]: Abstraction has 2180 states and 3559 transitions. [2020-12-22 09:12:38,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:12:38,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 3559 transitions. [2020-12-22 09:12:38,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2020-12-22 09:12:38,837 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:12:38,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:12:38,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:12:38,838 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:12:38,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:12:38,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1245827114, now seen corresponding path program 1 times [2020-12-22 09:12:38,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:12:38,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671372601] [2020-12-22 09:12:38,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:12:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:12:40,706 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 09:12:40,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671372601] [2020-12-22 09:12:40,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:12:40,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:12:40,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897738311] [2020-12-22 09:12:40,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:12:40,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:12:40,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:12:40,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:12:40,716 INFO L87 Difference]: Start difference. First operand 2180 states and 3559 transitions. Second operand 4 states. [2020-12-22 09:12:41,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:12:41,209 INFO L93 Difference]: Finished difference Result 6472 states and 10560 transitions. [2020-12-22 09:12:41,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:12:41,211 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 492 [2020-12-22 09:12:41,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:12:41,241 INFO L225 Difference]: With dead ends: 6472 [2020-12-22 09:12:41,241 INFO L226 Difference]: Without dead ends: 4305 [2020-12-22 09:12:41,248 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 09:12:41,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4305 states. [2020-12-22 09:12:41,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4305 to 4303. [2020-12-22 09:12:41,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4303 states. [2020-12-22 09:12:41,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4303 states to 4303 states and 6996 transitions. [2020-12-22 09:12:41,480 INFO L78 Accepts]: Start accepts. Automaton has 4303 states and 6996 transitions. Word has length 492 [2020-12-22 09:12:41,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:12:41,483 INFO L481 AbstractCegarLoop]: Abstraction has 4303 states and 6996 transitions. [2020-12-22 09:12:41,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:12:41,484 INFO L276 IsEmpty]: Start isEmpty. Operand 4303 states and 6996 transitions. [2020-12-22 09:12:41,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2020-12-22 09:12:41,502 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:12:41,503 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:12:41,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:12:41,504 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:12:41,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:12:41,506 INFO L82 PathProgramCache]: Analyzing trace with hash -682155922, now seen corresponding path program 1 times [2020-12-22 09:12:41,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:12:41,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34011193] [2020-12-22 09:12:41,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:12:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:12:42,142 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 09:12:42,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34011193] [2020-12-22 09:12:42,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:12:42,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:12:42,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392158707] [2020-12-22 09:12:42,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:12:42,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:12:42,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:12:42,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:42,146 INFO L87 Difference]: Start difference. First operand 4303 states and 6996 transitions. Second operand 3 states. [2020-12-22 09:12:42,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:12:42,606 INFO L93 Difference]: Finished difference Result 12601 states and 20437 transitions. [2020-12-22 09:12:42,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:12:42,607 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 494 [2020-12-22 09:12:42,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:12:42,653 INFO L225 Difference]: With dead ends: 12601 [2020-12-22 09:12:42,654 INFO L226 Difference]: Without dead ends: 8508 [2020-12-22 09:12:42,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:42,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8508 states. [2020-12-22 09:12:43,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8508 to 8506. [2020-12-22 09:12:43,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8506 states. [2020-12-22 09:12:43,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8506 states to 8506 states and 13781 transitions. [2020-12-22 09:12:43,231 INFO L78 Accepts]: Start accepts. Automaton has 8506 states and 13781 transitions. Word has length 494 [2020-12-22 09:12:43,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:12:43,240 INFO L481 AbstractCegarLoop]: Abstraction has 8506 states and 13781 transitions. [2020-12-22 09:12:43,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:12:43,240 INFO L276 IsEmpty]: Start isEmpty. Operand 8506 states and 13781 transitions. [2020-12-22 09:12:43,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2020-12-22 09:12:43,272 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:12:43,272 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:12:43,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:12:43,273 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:12:43,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:12:43,274 INFO L82 PathProgramCache]: Analyzing trace with hash 845301573, now seen corresponding path program 1 times [2020-12-22 09:12:43,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:12:43,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891689509] [2020-12-22 09:12:43,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:12:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:12:43,656 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 09:12:43,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891689509] [2020-12-22 09:12:43,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:12:43,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:12:43,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932469674] [2020-12-22 09:12:43,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:12:43,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:12:43,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:12:43,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:43,661 INFO L87 Difference]: Start difference. First operand 8506 states and 13781 transitions. Second operand 3 states. [2020-12-22 09:12:44,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:12:44,326 INFO L93 Difference]: Finished difference Result 25429 states and 41183 transitions. [2020-12-22 09:12:44,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:12:44,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 495 [2020-12-22 09:12:44,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:12:44,413 INFO L225 Difference]: With dead ends: 25429 [2020-12-22 09:12:44,414 INFO L226 Difference]: Without dead ends: 16971 [2020-12-22 09:12:44,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:44,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16971 states. [2020-12-22 09:12:44,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16971 to 8553. [2020-12-22 09:12:44,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8553 states. [2020-12-22 09:12:45,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8553 states to 8553 states and 13855 transitions. [2020-12-22 09:12:45,017 INFO L78 Accepts]: Start accepts. Automaton has 8553 states and 13855 transitions. Word has length 495 [2020-12-22 09:12:45,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:12:45,018 INFO L481 AbstractCegarLoop]: Abstraction has 8553 states and 13855 transitions. [2020-12-22 09:12:45,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:12:45,018 INFO L276 IsEmpty]: Start isEmpty. Operand 8553 states and 13855 transitions. [2020-12-22 09:12:45,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-12-22 09:12:45,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:12:45,042 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:12:45,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:12:45,043 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:12:45,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:12:45,043 INFO L82 PathProgramCache]: Analyzing trace with hash 615572681, now seen corresponding path program 1 times [2020-12-22 09:12:45,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:12:45,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847442568] [2020-12-22 09:12:45,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:12:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:12:45,610 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 09:12:45,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847442568] [2020-12-22 09:12:45,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:12:45,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:12:45,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284419871] [2020-12-22 09:12:45,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:12:45,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:12:45,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:12:45,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:45,614 INFO L87 Difference]: Start difference. First operand 8553 states and 13855 transitions. Second operand 3 states. [2020-12-22 09:12:46,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:12:46,599 INFO L93 Difference]: Finished difference Result 24916 states and 40244 transitions. [2020-12-22 09:12:46,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:12:46,600 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 496 [2020-12-22 09:12:46,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:12:46,644 INFO L225 Difference]: With dead ends: 24916 [2020-12-22 09:12:46,644 INFO L226 Difference]: Without dead ends: 16758 [2020-12-22 09:12:46,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:46,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16758 states. [2020-12-22 09:12:47,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16758 to 16756. [2020-12-22 09:12:47,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16756 states. [2020-12-22 09:12:47,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16756 states to 16756 states and 27013 transitions. [2020-12-22 09:12:47,633 INFO L78 Accepts]: Start accepts. Automaton has 16756 states and 27013 transitions. Word has length 496 [2020-12-22 09:12:47,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:12:47,634 INFO L481 AbstractCegarLoop]: Abstraction has 16756 states and 27013 transitions. [2020-12-22 09:12:47,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:12:47,634 INFO L276 IsEmpty]: Start isEmpty. Operand 16756 states and 27013 transitions. [2020-12-22 09:12:47,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-12-22 09:12:47,671 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:12:47,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:12:47,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:12:47,673 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:12:47,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:12:47,673 INFO L82 PathProgramCache]: Analyzing trace with hash 2088922318, now seen corresponding path program 1 times [2020-12-22 09:12:47,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:12:47,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310353064] [2020-12-22 09:12:47,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:12:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:12:47,935 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 09:12:47,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310353064] [2020-12-22 09:12:47,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:12:47,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:12:47,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559491452] [2020-12-22 09:12:47,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:12:47,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:12:47,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:12:47,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:47,938 INFO L87 Difference]: Start difference. First operand 16756 states and 27013 transitions. Second operand 3 states. [2020-12-22 09:12:49,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:12:49,343 INFO L93 Difference]: Finished difference Result 50020 states and 80602 transitions. [2020-12-22 09:12:49,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:12:49,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 496 [2020-12-22 09:12:49,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:12:49,426 INFO L225 Difference]: With dead ends: 50020 [2020-12-22 09:12:49,427 INFO L226 Difference]: Without dead ends: 33404 [2020-12-22 09:12:49,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:49,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33404 states. [2020-12-22 09:12:50,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33404 to 16854. [2020-12-22 09:12:50,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16854 states. [2020-12-22 09:12:50,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16854 states to 16854 states and 27164 transitions. [2020-12-22 09:12:50,647 INFO L78 Accepts]: Start accepts. Automaton has 16854 states and 27164 transitions. Word has length 496 [2020-12-22 09:12:50,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:12:50,647 INFO L481 AbstractCegarLoop]: Abstraction has 16854 states and 27164 transitions. [2020-12-22 09:12:50,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:12:50,647 INFO L276 IsEmpty]: Start isEmpty. Operand 16854 states and 27164 transitions. [2020-12-22 09:12:50,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2020-12-22 09:12:50,692 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:12:50,693 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:12:50,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:12:50,694 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:12:50,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:12:50,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1247756758, now seen corresponding path program 1 times [2020-12-22 09:12:50,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:12:50,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272783662] [2020-12-22 09:12:50,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:12:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:12:51,089 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 09:12:51,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272783662] [2020-12-22 09:12:51,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:12:51,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:12:51,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434368468] [2020-12-22 09:12:51,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:12:51,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:12:51,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:12:51,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:51,093 INFO L87 Difference]: Start difference. First operand 16854 states and 27164 transitions. Second operand 3 states. [2020-12-22 09:12:52,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:12:52,641 INFO L93 Difference]: Finished difference Result 50155 states and 80783 transitions. [2020-12-22 09:12:52,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:12:52,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 497 [2020-12-22 09:12:52,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:12:52,737 INFO L225 Difference]: With dead ends: 50155 [2020-12-22 09:12:52,737 INFO L226 Difference]: Without dead ends: 33521 [2020-12-22 09:12:52,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:52,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33521 states. [2020-12-22 09:12:53,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33521 to 16971. [2020-12-22 09:12:53,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16971 states. [2020-12-22 09:12:53,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16971 states to 16971 states and 27310 transitions. [2020-12-22 09:12:53,903 INFO L78 Accepts]: Start accepts. Automaton has 16971 states and 27310 transitions. Word has length 497 [2020-12-22 09:12:53,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:12:53,903 INFO L481 AbstractCegarLoop]: Abstraction has 16971 states and 27310 transitions. [2020-12-22 09:12:53,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:12:53,904 INFO L276 IsEmpty]: Start isEmpty. Operand 16971 states and 27310 transitions. [2020-12-22 09:12:53,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2020-12-22 09:12:53,934 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:12:53,934 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:12:53,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:12:53,935 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:12:53,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:12:53,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1638586742, now seen corresponding path program 1 times [2020-12-22 09:12:53,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:12:53,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209666629] [2020-12-22 09:12:53,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:12:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:12:54,260 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 09:12:54,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209666629] [2020-12-22 09:12:54,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:12:54,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:12:54,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150742411] [2020-12-22 09:12:54,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:12:54,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:12:54,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:12:54,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:54,264 INFO L87 Difference]: Start difference. First operand 16971 states and 27310 transitions. Second operand 3 states. [2020-12-22 09:12:55,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:12:55,301 INFO L93 Difference]: Finished difference Result 36903 states and 58968 transitions. [2020-12-22 09:12:55,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:12:55,301 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 498 [2020-12-22 09:12:55,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:12:55,343 INFO L225 Difference]: With dead ends: 36903 [2020-12-22 09:12:55,344 INFO L226 Difference]: Without dead ends: 24445 [2020-12-22 09:12:55,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:55,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24445 states. [2020-12-22 09:12:56,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24445 to 20171. [2020-12-22 09:12:56,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20171 states. [2020-12-22 09:12:56,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20171 states to 20171 states and 32634 transitions. [2020-12-22 09:12:56,391 INFO L78 Accepts]: Start accepts. Automaton has 20171 states and 32634 transitions. Word has length 498 [2020-12-22 09:12:56,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:12:56,392 INFO L481 AbstractCegarLoop]: Abstraction has 20171 states and 32634 transitions. [2020-12-22 09:12:56,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:12:56,392 INFO L276 IsEmpty]: Start isEmpty. Operand 20171 states and 32634 transitions. [2020-12-22 09:12:56,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2020-12-22 09:12:56,413 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:12:56,413 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:12:56,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:12:56,414 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:12:56,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:12:56,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1742061892, now seen corresponding path program 1 times [2020-12-22 09:12:56,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:12:56,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925862555] [2020-12-22 09:12:56,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:12:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:12:57,112 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 09:12:57,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925862555] [2020-12-22 09:12:57,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:12:57,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:12:57,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647329513] [2020-12-22 09:12:57,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:12:57,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:12:57,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:12:57,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:57,123 INFO L87 Difference]: Start difference. First operand 20171 states and 32634 transitions. Second operand 3 states. [2020-12-22 09:12:59,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:12:59,125 INFO L93 Difference]: Finished difference Result 58558 states and 94577 transitions. [2020-12-22 09:12:59,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:12:59,125 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 498 [2020-12-22 09:12:59,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:12:59,186 INFO L225 Difference]: With dead ends: 58558 [2020-12-22 09:12:59,187 INFO L226 Difference]: Without dead ends: 39352 [2020-12-22 09:12:59,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:59,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39352 states. [2020-12-22 09:13:01,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39352 to 39350. [2020-12-22 09:13:01,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39350 states. [2020-12-22 09:13:01,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39350 states to 39350 states and 63391 transitions. [2020-12-22 09:13:01,145 INFO L78 Accepts]: Start accepts. Automaton has 39350 states and 63391 transitions. Word has length 498 [2020-12-22 09:13:01,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:01,146 INFO L481 AbstractCegarLoop]: Abstraction has 39350 states and 63391 transitions. [2020-12-22 09:13:01,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:01,146 INFO L276 IsEmpty]: Start isEmpty. Operand 39350 states and 63391 transitions. [2020-12-22 09:13:01,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2020-12-22 09:13:01,183 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:01,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:01,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:13:01,184 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:01,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:01,185 INFO L82 PathProgramCache]: Analyzing trace with hash -857503583, now seen corresponding path program 1 times [2020-12-22 09:13:01,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:01,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917221518] [2020-12-22 09:13:01,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:02,993 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 09:13:02,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917221518] [2020-12-22 09:13:02,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:02,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:13:02,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511447256] [2020-12-22 09:13:02,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:13:02,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:02,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:13:02,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:13:02,996 INFO L87 Difference]: Start difference. First operand 39350 states and 63391 transitions. Second operand 5 states. [2020-12-22 09:13:06,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:06,994 INFO L93 Difference]: Finished difference Result 116098 states and 187009 transitions. [2020-12-22 09:13:06,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:13:06,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 498 [2020-12-22 09:13:06,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:07,112 INFO L225 Difference]: With dead ends: 116098 [2020-12-22 09:13:07,112 INFO L226 Difference]: Without dead ends: 76962 [2020-12-22 09:13:07,145 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 09:13:07,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76962 states. [2020-12-22 09:13:11,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76962 to 76960. [2020-12-22 09:13:11,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76960 states. [2020-12-22 09:13:11,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76960 states to 76960 states and 123462 transitions. [2020-12-22 09:13:11,315 INFO L78 Accepts]: Start accepts. Automaton has 76960 states and 123462 transitions. Word has length 498 [2020-12-22 09:13:11,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:11,315 INFO L481 AbstractCegarLoop]: Abstraction has 76960 states and 123462 transitions. [2020-12-22 09:13:11,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:13:11,316 INFO L276 IsEmpty]: Start isEmpty. Operand 76960 states and 123462 transitions. [2020-12-22 09:13:11,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2020-12-22 09:13:11,412 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:11,412 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:11,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:13:11,413 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:11,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:11,414 INFO L82 PathProgramCache]: Analyzing trace with hash -919350637, now seen corresponding path program 1 times [2020-12-22 09:13:11,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:11,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863293398] [2020-12-22 09:13:11,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:12,171 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 09:13:12,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863293398] [2020-12-22 09:13:12,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:12,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:12,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180441917] [2020-12-22 09:13:12,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:12,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:12,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:12,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:12,174 INFO L87 Difference]: Start difference. First operand 76960 states and 123462 transitions. Second operand 3 states. [2020-12-22 09:13:19,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:19,410 INFO L93 Difference]: Finished difference Result 227098 states and 364029 transitions. [2020-12-22 09:13:19,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:19,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 500 [2020-12-22 09:13:19,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:19,627 INFO L225 Difference]: With dead ends: 227098 [2020-12-22 09:13:19,627 INFO L226 Difference]: Without dead ends: 151676 [2020-12-22 09:13:19,681 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 09:13:19,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151676 states. [2020-12-22 09:13:27,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151676 to 151674. [2020-12-22 09:13:27,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151674 states. [2020-12-22 09:13:27,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151674 states to 151674 states and 242372 transitions. [2020-12-22 09:13:27,916 INFO L78 Accepts]: Start accepts. Automaton has 151674 states and 242372 transitions. Word has length 500 [2020-12-22 09:13:27,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:27,917 INFO L481 AbstractCegarLoop]: Abstraction has 151674 states and 242372 transitions. [2020-12-22 09:13:27,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:27,917 INFO L276 IsEmpty]: Start isEmpty. Operand 151674 states and 242372 transitions. [2020-12-22 09:13:28,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2020-12-22 09:13:28,025 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:28,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:28,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:13:28,026 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:28,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:28,027 INFO L82 PathProgramCache]: Analyzing trace with hash 794414190, now seen corresponding path program 1 times [2020-12-22 09:13:28,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:28,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117580052] [2020-12-22 09:13:28,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:29,018 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 09:13:29,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117580052] [2020-12-22 09:13:29,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:29,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:29,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537012850] [2020-12-22 09:13:29,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:29,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:29,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:29,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:29,021 INFO L87 Difference]: Start difference. First operand 151674 states and 242372 transitions. Second operand 3 states. [2020-12-22 09:13:42,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:42,671 INFO L93 Difference]: Finished difference Result 446245 states and 712029 transitions. [2020-12-22 09:13:42,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:42,672 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 502 [2020-12-22 09:13:42,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:43,337 INFO L225 Difference]: With dead ends: 446245 [2020-12-22 09:13:43,337 INFO L226 Difference]: Without dead ends: 298275 [2020-12-22 09:13:43,525 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 09:13:43,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298275 states. [2020-12-22 09:13:59,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298275 to 298273. [2020-12-22 09:13:59,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298273 states. [2020-12-22 09:14:00,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298273 states to 298273 states and 474532 transitions. [2020-12-22 09:14:00,472 INFO L78 Accepts]: Start accepts. Automaton has 298273 states and 474532 transitions. Word has length 502 [2020-12-22 09:14:00,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:00,490 INFO L481 AbstractCegarLoop]: Abstraction has 298273 states and 474532 transitions. [2020-12-22 09:14:00,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:00,490 INFO L276 IsEmpty]: Start isEmpty. Operand 298273 states and 474532 transitions. [2020-12-22 09:14:01,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2020-12-22 09:14:01,140 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:01,140 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:14:01,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:14:01,141 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:01,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:01,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1962657547, now seen corresponding path program 1 times [2020-12-22 09:14:01,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:01,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405397706] [2020-12-22 09:14:01,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat