/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/eca-rers2012/Problem10_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 03:37:51,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 03:37:51,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 03:37:51,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 03:37:51,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 03:37:51,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 03:37:51,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 03:37:51,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 03:37:51,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 03:37:51,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 03:37:51,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 03:37:51,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 03:37:51,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 03:37:51,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 03:37:51,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 03:37:51,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 03:37:51,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 03:37:51,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 03:37:51,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 03:37:51,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 03:37:51,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 03:37:51,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 03:37:51,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 03:37:51,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 03:37:51,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 03:37:51,997 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 03:37:52,054 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 03:37:52,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 03:37:52,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 03:37:52,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 03:37:52,060 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 03:37:52,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 03:37:52,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 03:37:52,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 03:37:52,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 03:37:52,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 03:37:52,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 03:37:52,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 03:37:52,062 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 03:37:52,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 03:37:52,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 03:37:52,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 03:37:52,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 03:37:52,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 03:37:52,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 03:37:52,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 03:37:52,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 03:37:52,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 03:37:52,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 03:37:52,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 03:37:52,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 03:37:52,065 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 03:37:52,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 03:37:52,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 03:37:52,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 03:37:52,514 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 03:37:52,515 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 03:37:52,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem10_label47.c [2020-12-23 03:37:52,617 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/08b697b3e/d17dd90c8e4f43e380ea4be8f7ab8d61/FLAGf4b52e13c [2020-12-23 03:37:53,341 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 03:37:53,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem10_label47.c [2020-12-23 03:37:53,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/08b697b3e/d17dd90c8e4f43e380ea4be8f7ab8d61/FLAGf4b52e13c [2020-12-23 03:37:53,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/08b697b3e/d17dd90c8e4f43e380ea4be8f7ab8d61 [2020-12-23 03:37:53,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 03:37:53,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 03:37:53,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 03:37:53,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 03:37:53,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 03:37:53,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 03:37:53" (1/1) ... [2020-12-23 03:37:53,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10d7d6f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:37:53, skipping insertion in model container [2020-12-23 03:37:53,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 03:37:53" (1/1) ... [2020-12-23 03:37:53,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 03:37:53,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 03:37:53,964 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem10_label47.c[2379,2392] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~input~0,] left hand side expression in assignment: lhs: VariableLHS[~output~0,] [2020-12-23 03:37:54,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 03:37:54,246 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 03:37:54,268 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem10_label47.c[2379,2392] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a10~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~a19~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~input~0,] left hand side expression in assignment: lhs: VariableLHS[~output~0,] [2020-12-23 03:37:54,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 03:37:54,413 INFO L208 MainTranslator]: Completed translation [2020-12-23 03:37:54,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:37:54 WrapperNode [2020-12-23 03:37:54,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 03:37:54,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 03:37:54,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 03:37:54,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 03:37:54,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:37:54" (1/1) ... [2020-12-23 03:37:54,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:37:54" (1/1) ... [2020-12-23 03:37:54,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 03:37:54,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 03:37:54,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 03:37:54,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 03:37:54,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:37:54" (1/1) ... [2020-12-23 03:37:54,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:37:54" (1/1) ... [2020-12-23 03:37:54,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:37:54" (1/1) ... [2020-12-23 03:37:54,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:37:54" (1/1) ... [2020-12-23 03:37:54,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:37:54" (1/1) ... [2020-12-23 03:37:54,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:37:54" (1/1) ... [2020-12-23 03:37:54,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:37:54" (1/1) ... [2020-12-23 03:37:54,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 03:37:54,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 03:37:54,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 03:37:54,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 03:37:54,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:37:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 03:37:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 03:37:54,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 03:37:54,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 03:37:54,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 03:37:56,339 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 03:37:56,340 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-23 03:37:56,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 03:37:56 BoogieIcfgContainer [2020-12-23 03:37:56,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 03:37:56,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 03:37:56,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 03:37:56,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 03:37:56,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 03:37:53" (1/3) ... [2020-12-23 03:37:56,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460d3e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 03:37:56, skipping insertion in model container [2020-12-23 03:37:56,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:37:54" (2/3) ... [2020-12-23 03:37:56,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460d3e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 03:37:56, skipping insertion in model container [2020-12-23 03:37:56,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 03:37:56" (3/3) ... [2020-12-23 03:37:56,352 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem10_label47.c [2020-12-23 03:37:56,359 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 03:37:56,365 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 03:37:56,384 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 03:37:56,414 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 03:37:56,415 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 03:37:56,415 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 03:37:56,415 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 03:37:56,415 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 03:37:56,415 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 03:37:56,415 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 03:37:56,415 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 03:37:56,436 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2020-12-23 03:37:56,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 03:37:56,442 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 03:37:56,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 03:37:56,443 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 03:37:56,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 03:37:56,450 INFO L82 PathProgramCache]: Analyzing trace with hash 406614337, now seen corresponding path program 1 times [2020-12-23 03:37:56,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 03:37:56,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003253480] [2020-12-23 03:37:56,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 03:37:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 03:37:56,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 03:37:56,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003253480] [2020-12-23 03:37:56,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 03:37:56,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 03:37:56,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022269006] [2020-12-23 03:37:56,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 03:37:56,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 03:37:56,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 03:37:56,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 03:37:56,780 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 3 states. [2020-12-23 03:37:57,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 03:37:57,957 INFO L93 Difference]: Finished difference Result 552 states and 966 transitions. [2020-12-23 03:37:57,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 03:37:57,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-23 03:37:57,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 03:37:57,975 INFO L225 Difference]: With dead ends: 552 [2020-12-23 03:37:57,975 INFO L226 Difference]: Without dead ends: 282 [2020-12-23 03:37:57,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 03:37:58,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-12-23 03:37:58,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-12-23 03:37:58,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-12-23 03:37:58,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 377 transitions. [2020-12-23 03:37:58,087 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 377 transitions. Word has length 19 [2020-12-23 03:37:58,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 03:37:58,087 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 377 transitions. [2020-12-23 03:37:58,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 03:37:58,088 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 377 transitions. [2020-12-23 03:37:58,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-23 03:37:58,094 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 03:37:58,095 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 03:37:58,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 03:37:58,096 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 03:37:58,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 03:37:58,098 INFO L82 PathProgramCache]: Analyzing trace with hash 367126868, now seen corresponding path program 1 times [2020-12-23 03:37:58,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 03:37:58,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746237893] [2020-12-23 03:37:58,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 03:37:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 03:37:58,558 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 03:37:58,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746237893] [2020-12-23 03:37:58,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619639831] [2020-12-23 03:37:58,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 03:37:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 03:37:58,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-23 03:37:58,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 03:37:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-23 03:37:58,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 03:37:58,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2020-12-23 03:37:58,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203064681] [2020-12-23 03:37:58,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 03:37:58,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 03:37:58,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 03:37:58,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 03:37:58,780 INFO L87 Difference]: Start difference. First operand 282 states and 377 transitions. Second operand 3 states. [2020-12-23 03:37:59,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 03:37:59,545 INFO L93 Difference]: Finished difference Result 562 states and 752 transitions. [2020-12-23 03:37:59,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 03:37:59,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-12-23 03:37:59,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 03:37:59,551 INFO L225 Difference]: With dead ends: 562 [2020-12-23 03:37:59,551 INFO L226 Difference]: Without dead ends: 560 [2020-12-23 03:37:59,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 03:37:59,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-12-23 03:37:59,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 421. [2020-12-23 03:37:59,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-12-23 03:37:59,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 591 transitions. [2020-12-23 03:37:59,578 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 591 transitions. Word has length 85 [2020-12-23 03:37:59,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 03:37:59,578 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 591 transitions. [2020-12-23 03:37:59,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 03:37:59,579 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 591 transitions. [2020-12-23 03:37:59,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-23 03:37:59,582 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 03:37:59,582 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 03:37:59,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 03:37:59,796 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 03:37:59,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 03:37:59,797 INFO L82 PathProgramCache]: Analyzing trace with hash -682221447, now seen corresponding path program 1 times [2020-12-23 03:37:59,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 03:37:59,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109982543] [2020-12-23 03:37:59,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 03:37:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 03:37:59,935 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 03:37:59,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109982543] [2020-12-23 03:37:59,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 03:37:59,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 03:37:59,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944376049] [2020-12-23 03:37:59,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 03:37:59,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 03:37:59,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 03:37:59,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 03:37:59,938 INFO L87 Difference]: Start difference. First operand 421 states and 591 transitions. Second operand 3 states. [2020-12-23 03:38:00,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 03:38:00,616 INFO L93 Difference]: Finished difference Result 979 states and 1339 transitions. [2020-12-23 03:38:00,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 03:38:00,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-12-23 03:38:00,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 03:38:00,624 INFO L225 Difference]: With dead ends: 979 [2020-12-23 03:38:00,625 INFO L226 Difference]: Without dead ends: 560 [2020-12-23 03:38:00,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 03:38:00,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-12-23 03:38:00,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2020-12-23 03:38:00,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-12-23 03:38:00,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 740 transitions. [2020-12-23 03:38:00,659 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 740 transitions. Word has length 88 [2020-12-23 03:38:00,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 03:38:00,660 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 740 transitions. [2020-12-23 03:38:00,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 03:38:00,660 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 740 transitions. [2020-12-23 03:38:00,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 03:38:00,664 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 03:38:00,664 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 03:38:00,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 03:38:00,665 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 03:38:00,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 03:38:00,665 INFO L82 PathProgramCache]: Analyzing trace with hash -124156760, now seen corresponding path program 1 times [2020-12-23 03:38:00,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 03:38:00,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130664300] [2020-12-23 03:38:00,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 03:38:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 03:38:00,771 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 03:38:00,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130664300] [2020-12-23 03:38:00,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 03:38:00,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 03:38:00,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947362277] [2020-12-23 03:38:00,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 03:38:00,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 03:38:00,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 03:38:00,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 03:38:00,775 INFO L87 Difference]: Start difference. First operand 560 states and 740 transitions. Second operand 3 states. [2020-12-23 03:38:01,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 03:38:01,562 INFO L93 Difference]: Finished difference Result 1257 states and 1758 transitions. [2020-12-23 03:38:01,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 03:38:01,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-12-23 03:38:01,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 03:38:01,568 INFO L225 Difference]: With dead ends: 1257 [2020-12-23 03:38:01,568 INFO L226 Difference]: Without dead ends: 838 [2020-12-23 03:38:01,569 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 [2020-12-23 03:38:01,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2020-12-23 03:38:01,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 699. [2020-12-23 03:38:01,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-12-23 03:38:01,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 914 transitions. [2020-12-23 03:38:01,588 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 914 transitions. Word has length 94 [2020-12-23 03:38:01,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 03:38:01,588 INFO L481 AbstractCegarLoop]: Abstraction has 699 states and 914 transitions. [2020-12-23 03:38:01,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 03:38:01,589 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 914 transitions. [2020-12-23 03:38:01,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-23 03:38:01,592 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 03:38:01,592 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 03:38:01,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 03:38:01,593 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 03:38:01,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 03:38:01,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1497181114, now seen corresponding path program 1 times [2020-12-23 03:38:01,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 03:38:01,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031706040] [2020-12-23 03:38:01,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 03:38:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 03:38:01,737 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-12-23 03:38:01,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031706040] [2020-12-23 03:38:01,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 03:38:01,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 03:38:01,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546689647] [2020-12-23 03:38:01,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 03:38:01,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 03:38:01,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 03:38:01,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 03:38:01,744 INFO L87 Difference]: Start difference. First operand 699 states and 914 transitions. Second operand 3 states. [2020-12-23 03:38:02,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 03:38:02,407 INFO L93 Difference]: Finished difference Result 1535 states and 2010 transitions. [2020-12-23 03:38:02,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 03:38:02,408 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2020-12-23 03:38:02,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 03:38:02,414 INFO L225 Difference]: With dead ends: 1535 [2020-12-23 03:38:02,414 INFO L226 Difference]: Without dead ends: 977 [2020-12-23 03:38:02,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 03:38:02,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2020-12-23 03:38:02,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 977. [2020-12-23 03:38:02,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2020-12-23 03:38:02,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1162 transitions. [2020-12-23 03:38:02,458 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1162 transitions. Word has length 154 [2020-12-23 03:38:02,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 03:38:02,458 INFO L481 AbstractCegarLoop]: Abstraction has 977 states and 1162 transitions. [2020-12-23 03:38:02,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 03:38:02,458 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1162 transitions. [2020-12-23 03:38:02,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-23 03:38:02,461 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 03:38:02,461 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 03:38:02,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 03:38:02,462 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 03:38:02,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 03:38:02,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1743811801, now seen corresponding path program 1 times [2020-12-23 03:38:02,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 03:38:02,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877375654] [2020-12-23 03:38:02,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 03:38:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 03:38:02,622 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 03:38:02,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877375654] [2020-12-23 03:38:02,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 03:38:02,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 03:38:02,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808625333] [2020-12-23 03:38:02,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 03:38:02,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 03:38:02,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 03:38:02,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 03:38:02,628 INFO L87 Difference]: Start difference. First operand 977 states and 1162 transitions. Second operand 3 states. [2020-12-23 03:38:03,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 03:38:03,222 INFO L93 Difference]: Finished difference Result 2091 states and 2557 transitions. [2020-12-23 03:38:03,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 03:38:03,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-12-23 03:38:03,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 03:38:03,229 INFO L225 Difference]: With dead ends: 2091 [2020-12-23 03:38:03,230 INFO L226 Difference]: Without dead ends: 1255 [2020-12-23 03:38:03,231 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 [2020-12-23 03:38:03,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2020-12-23 03:38:03,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1255. [2020-12-23 03:38:03,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1255 states. [2020-12-23 03:38:03,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1461 transitions. [2020-12-23 03:38:03,273 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1461 transitions. Word has length 171 [2020-12-23 03:38:03,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 03:38:03,279 INFO L481 AbstractCegarLoop]: Abstraction has 1255 states and 1461 transitions. [2020-12-23 03:38:03,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 03:38:03,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1461 transitions. [2020-12-23 03:38:03,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-12-23 03:38:03,283 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 03:38:03,284 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 03:38:03,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 03:38:03,285 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 03:38:03,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 03:38:03,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1521646240, now seen corresponding path program 1 times [2020-12-23 03:38:03,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 03:38:03,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220499354] [2020-12-23 03:38:03,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 03:38:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 03:38:03,784 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 03:38:03,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220499354] [2020-12-23 03:38:03,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 03:38:03,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 03:38:03,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137364819] [2020-12-23 03:38:03,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 03:38:03,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 03:38:03,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 03:38:03,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 03:38:03,788 INFO L87 Difference]: Start difference. First operand 1255 states and 1461 transitions. Second operand 7 states. [2020-12-23 03:38:04,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 03:38:04,442 INFO L93 Difference]: Finished difference Result 2424 states and 2831 transitions. [2020-12-23 03:38:04,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 03:38:04,442 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-12-23 03:38:04,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 03:38:04,451 INFO L225 Difference]: With dead ends: 2424 [2020-12-23 03:38:04,451 INFO L226 Difference]: Without dead ends: 1255 [2020-12-23 03:38:04,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 03:38:04,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2020-12-23 03:38:04,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1255. [2020-12-23 03:38:04,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1255 states. [2020-12-23 03:38:04,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1456 transitions. [2020-12-23 03:38:04,484 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1456 transitions. Word has length 226 [2020-12-23 03:38:04,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 03:38:04,484 INFO L481 AbstractCegarLoop]: Abstraction has 1255 states and 1456 transitions. [2020-12-23 03:38:04,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 03:38:04,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1456 transitions. [2020-12-23 03:38:04,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-12-23 03:38:04,489 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 03:38:04,490 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 03:38:04,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 03:38:04,490 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 03:38:04,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 03:38:04,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1183329606, now seen corresponding path program 1 times [2020-12-23 03:38:04,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 03:38:04,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014938357] [2020-12-23 03:38:04,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 03:38:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 03:38:04,799 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 126 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 03:38:04,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014938357] [2020-12-23 03:38:04,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746224897] [2020-12-23 03:38:04,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 03:38:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 03:38:04,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 03:38:04,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 03:38:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 126 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 03:38:05,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 03:38:05,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-12-23 03:38:05,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446082456] [2020-12-23 03:38:05,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 03:38:05,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 03:38:05,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 03:38:05,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 03:38:05,485 INFO L87 Difference]: Start difference. First operand 1255 states and 1456 transitions. Second operand 5 states. [2020-12-23 03:38:07,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 03:38:07,052 INFO L93 Difference]: Finished difference Result 5010 states and 5924 transitions. [2020-12-23 03:38:07,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 03:38:07,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 262 [2020-12-23 03:38:07,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 03:38:07,073 INFO L225 Difference]: With dead ends: 5010 [2020-12-23 03:38:07,074 INFO L226 Difference]: Without dead ends: 3896 [2020-12-23 03:38:07,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 261 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 03:38:07,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2020-12-23 03:38:07,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 2228. [2020-12-23 03:38:07,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2228 states. [2020-12-23 03:38:07,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 2553 transitions. [2020-12-23 03:38:07,158 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 2553 transitions. Word has length 262 [2020-12-23 03:38:07,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 03:38:07,159 INFO L481 AbstractCegarLoop]: Abstraction has 2228 states and 2553 transitions. [2020-12-23 03:38:07,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 03:38:07,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 2553 transitions. [2020-12-23 03:38:07,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-12-23 03:38:07,165 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 03:38:07,165 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 03:38:07,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 03:38:07,379 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 03:38:07,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 03:38:07,380 INFO L82 PathProgramCache]: Analyzing trace with hash -511477952, now seen corresponding path program 1 times [2020-12-23 03:38:07,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 03:38:07,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987258349] [2020-12-23 03:38:07,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 03:38:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 03:38:07,639 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 03:38:07,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987258349] [2020-12-23 03:38:07,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 03:38:07,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 03:38:07,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723654023] [2020-12-23 03:38:07,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 03:38:07,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 03:38:07,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 03:38:07,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 03:38:07,642 INFO L87 Difference]: Start difference. First operand 2228 states and 2553 transitions. Second operand 4 states. [2020-12-23 03:38:08,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 03:38:08,675 INFO L93 Difference]: Finished difference Result 4593 states and 5289 transitions. [2020-12-23 03:38:08,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 03:38:08,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 267 [2020-12-23 03:38:08,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 03:38:08,687 INFO L225 Difference]: With dead ends: 4593 [2020-12-23 03:38:08,688 INFO L226 Difference]: Without dead ends: 2506 [2020-12-23 03:38:08,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 03:38:08,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2020-12-23 03:38:08,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2228. [2020-12-23 03:38:08,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2228 states. [2020-12-23 03:38:08,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 2538 transitions. [2020-12-23 03:38:08,742 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 2538 transitions. Word has length 267 [2020-12-23 03:38:08,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 03:38:08,743 INFO L481 AbstractCegarLoop]: Abstraction has 2228 states and 2538 transitions. [2020-12-23 03:38:08,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 03:38:08,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 2538 transitions. [2020-12-23 03:38:08,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-12-23 03:38:08,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 03:38:08,749 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 03:38:08,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 03:38:08,749 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 03:38:08,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 03:38:08,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1968255870, now seen corresponding path program 1 times [2020-12-23 03:38:08,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 03:38:08,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274278088] [2020-12-23 03:38:08,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 03:38:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 03:38:08,921 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-12-23 03:38:08,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274278088] [2020-12-23 03:38:08,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 03:38:08,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 03:38:08,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209512617] [2020-12-23 03:38:08,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 03:38:08,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 03:38:08,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 03:38:08,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 03:38:08,925 INFO L87 Difference]: Start difference. First operand 2228 states and 2538 transitions. Second operand 3 states. [2020-12-23 03:38:09,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 03:38:09,632 INFO L93 Difference]: Finished difference Result 4871 states and 5660 transitions. [2020-12-23 03:38:09,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 03:38:09,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 267 [2020-12-23 03:38:09,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 03:38:09,647 INFO L225 Difference]: With dead ends: 4871 [2020-12-23 03:38:09,648 INFO L226 Difference]: Without dead ends: 2784 [2020-12-23 03:38:09,651 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 [2020-12-23 03:38:09,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2020-12-23 03:38:09,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 2645. [2020-12-23 03:38:09,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2645 states. [2020-12-23 03:38:09,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2645 states to 2645 states and 2995 transitions. [2020-12-23 03:38:09,718 INFO L78 Accepts]: Start accepts. Automaton has 2645 states and 2995 transitions. Word has length 267 [2020-12-23 03:38:09,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 03:38:09,719 INFO L481 AbstractCegarLoop]: Abstraction has 2645 states and 2995 transitions. [2020-12-23 03:38:09,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 03:38:09,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2645 states and 2995 transitions. [2020-12-23 03:38:09,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-12-23 03:38:09,725 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 03:38:09,726 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 03:38:09,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 03:38:09,726 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 03:38:09,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 03:38:09,727 INFO L82 PathProgramCache]: Analyzing trace with hash 377334884, now seen corresponding path program 1 times [2020-12-23 03:38:09,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 03:38:09,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368656093] [2020-12-23 03:38:09,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 03:38:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 03:38:09,946 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 170 proven. 17 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-12-23 03:38:09,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368656093] [2020-12-23 03:38:09,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506765289] [2020-12-23 03:38:09,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 03:38:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 03:38:10,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-23 03:38:10,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 03:38:10,376 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 03:38:10,380 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 03:38:10,399 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 03:38:10,524 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:10,694 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:10,931 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:11,131 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:11,358 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:11,723 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:12,025 INFO L757 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:12,667 INFO L757 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:13,479 INFO L757 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:14,215 INFO L757 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:14,978 INFO L757 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:15,941 INFO L757 QuantifierPusher]: Run 120 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:16,887 INFO L757 QuantifierPusher]: Run 130 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:18,036 INFO L757 QuantifierPusher]: Run 140 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:19,507 INFO L757 QuantifierPusher]: Run 150 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:20,773 INFO L757 QuantifierPusher]: Run 160 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:22,110 INFO L757 QuantifierPusher]: Run 170 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:23,500 INFO L757 QuantifierPusher]: Run 180 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:24,607 INFO L757 QuantifierPusher]: Run 190 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:25,957 INFO L757 QuantifierPusher]: Run 200 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:27,372 INFO L757 QuantifierPusher]: Run 210 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:29,116 INFO L757 QuantifierPusher]: Run 220 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:31,085 INFO L757 QuantifierPusher]: Run 230 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:33,510 INFO L757 QuantifierPusher]: Run 240 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:36,355 INFO L757 QuantifierPusher]: Run 250 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:40,328 INFO L757 QuantifierPusher]: Run 260 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:45,005 INFO L757 QuantifierPusher]: Run 270 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:50,318 INFO L757 QuantifierPusher]: Run 280 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:38:56,831 INFO L757 QuantifierPusher]: Run 290 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:39:03,996 INFO L757 QuantifierPusher]: Run 300 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:39:11,802 INFO L757 QuantifierPusher]: Run 310 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:39:20,284 INFO L757 QuantifierPusher]: Run 320 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:39:29,510 INFO L757 QuantifierPusher]: Run 330 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:39:37,893 INFO L757 QuantifierPusher]: Run 340 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:39:47,327 INFO L757 QuantifierPusher]: Run 350 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:39:57,350 INFO L757 QuantifierPusher]: Run 360 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:40:06,667 INFO L757 QuantifierPusher]: Run 370 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:40:16,323 INFO L757 QuantifierPusher]: Run 380 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:40:26,658 INFO L757 QuantifierPusher]: Run 390 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:40:37,792 INFO L757 QuantifierPusher]: Run 400 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:40:49,690 INFO L757 QuantifierPusher]: Run 410 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:41:02,653 INFO L757 QuantifierPusher]: Run 420 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:41:12,467 INFO L757 QuantifierPusher]: Run 430 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:41:23,416 INFO L757 QuantifierPusher]: Run 440 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:41:35,748 INFO L757 QuantifierPusher]: Run 450 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:41:51,408 INFO L757 QuantifierPusher]: Run 460 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:42:05,178 INFO L757 QuantifierPusher]: Run 470 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 03:42:19,642 INFO L757 QuantifierPusher]: Run 480 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug.