/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/float-benchs/zonotope_3.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:02:02,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:02:02,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:02:02,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:02:02,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:02:02,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:02:02,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:02:02,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:02:02,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:02:02,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:02:02,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:02:02,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:02:02,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:02:02,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:02:02,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:02:02,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:02:02,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:02:02,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:02:02,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:02:02,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:02:02,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:02:02,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:02:02,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:02:02,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:02:02,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 16:02:02,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 16:02:02,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 16:02:02,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 16:02:02,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 16:02:02,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 16:02:02,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:02:02,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:02:02,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:02:02,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:02:02,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:02:02,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:02:02,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:02:02,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:02:02,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:02:02,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:02:02,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:02:02,525 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 16:02:02,552 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:02:02,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:02:02,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:02:02,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:02:02,555 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:02:02,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:02:02,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:02:02,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:02:02,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:02:02,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:02:02,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:02:02,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:02:02,557 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:02:02,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:02:02,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:02:02,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:02:02,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:02:02,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:02:02,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:02:02,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:02:02,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:02:02,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:02:02,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:02:02,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:02:02,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:02:02,561 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:02:02,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:02:02,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:02:02,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:02:02,996 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:02:02,997 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:02:02,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c [2021-01-06 16:02:03,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8fe98ed52/28ddda0386ee4641b46ae34e3ca6c216/FLAGa1d87f3e4 [2021-01-06 16:02:03,714 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:02:03,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c [2021-01-06 16:02:03,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8fe98ed52/28ddda0386ee4641b46ae34e3ca6c216/FLAGa1d87f3e4 [2021-01-06 16:02:04,041 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8fe98ed52/28ddda0386ee4641b46ae34e3ca6c216 [2021-01-06 16:02:04,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:02:04,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:02:04,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:02:04,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:02:04,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:02:04,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:02:04" (1/1) ... [2021-01-06 16:02:04,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@394f3940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:04, skipping insertion in model container [2021-01-06 16:02:04,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:02:04" (1/1) ... [2021-01-06 16:02:04,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:02:04,143 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_120172~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_2~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_120176~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__z~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_3~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_120180~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__u~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_4~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_120184~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__v~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_5~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~2,] left hand side expression in assignment: lhs: VariableLHS[~__return_120198~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_6~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~2,] left hand side expression in assignment: lhs: VariableLHS[~__return_120202~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__z~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_7~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~3,] left hand side expression in assignment: lhs: VariableLHS[~__return_120206~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__u~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_8~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~3,] left hand side expression in assignment: lhs: VariableLHS[~__return_120211~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~main__v~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_9~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~4,] left hand side expression in assignment: lhs: VariableLHS[~__return_120226~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_10~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~4,] left hand side expression in assignment: lhs: VariableLHS[~__return_120230~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__z~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_11~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~5,] left hand side expression in assignment: lhs: VariableLHS[~__return_120234~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__u~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_12~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~5,] left hand side expression in assignment: lhs: VariableLHS[~__return_120239~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~main__v~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~2,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_13~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~6,] left hand side expression in assignment: lhs: VariableLHS[~__return_120254~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_14~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~6,] left hand side expression in assignment: lhs: VariableLHS[~__return_120258~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__z~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_15~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~7,] left hand side expression in assignment: lhs: VariableLHS[~__return_120262~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__u~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_16~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~7,] left hand side expression in assignment: lhs: VariableLHS[~__return_120267~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~2,] left hand side expression in assignment: lhs: VariableLHS[~main__v~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~3,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_17~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~8,] left hand side expression in assignment: lhs: VariableLHS[~__return_120282~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_18~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~8,] left hand side expression in assignment: lhs: VariableLHS[~__return_120286~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__z~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_19~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~9,] left hand side expression in assignment: lhs: VariableLHS[~__return_120290~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__u~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_20~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~9,] left hand side expression in assignment: lhs: VariableLHS[~__return_120295~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~3,] left hand side expression in assignment: lhs: VariableLHS[~main__v~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~4,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_21~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~10,] left hand side expression in assignment: lhs: VariableLHS[~__return_120310~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_22~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~10,] left hand side expression in assignment: lhs: VariableLHS[~__return_120314~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__z~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_23~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~11,] left hand side expression in assignment: lhs: VariableLHS[~__return_120318~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__u~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_24~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~11,] left hand side expression in assignment: lhs: VariableLHS[~__return_120323~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~4,] left hand side expression in assignment: lhs: VariableLHS[~main__v~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~5,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_25~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~12,] left hand side expression in assignment: lhs: VariableLHS[~__return_120338~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_26~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~12,] left hand side expression in assignment: lhs: VariableLHS[~__return_120342~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__z~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_27~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~13,] left hand side expression in assignment: lhs: VariableLHS[~__return_120346~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__u~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_28~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~13,] left hand side expression in assignment: lhs: VariableLHS[~__return_120351~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~5,] left hand side expression in assignment: lhs: VariableLHS[~main__v~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~6,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_29~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~14,] left hand side expression in assignment: lhs: VariableLHS[~__return_120366~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_30~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~14,] left hand side expression in assignment: lhs: VariableLHS[~__return_120370~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__z~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_31~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~15,] left hand side expression in assignment: lhs: VariableLHS[~__return_120374~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__u~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_32~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~15,] left hand side expression in assignment: lhs: VariableLHS[~__return_120379~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~6,] left hand side expression in assignment: lhs: VariableLHS[~main__v~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~7,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_33~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~16,] left hand side expression in assignment: lhs: VariableLHS[~__return_120394~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_34~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~16,] left hand side expression in assignment: lhs: VariableLHS[~__return_120398~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__z~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_35~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~17,] left hand side expression in assignment: lhs: VariableLHS[~__return_120402~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__u~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_36~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~17,] left hand side expression in assignment: lhs: VariableLHS[~__return_120407~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~7,] left hand side expression in assignment: lhs: VariableLHS[~main__v~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~8,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_37~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~18,] left hand side expression in assignment: lhs: VariableLHS[~__return_120422~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_38~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~18,] left hand side expression in assignment: lhs: VariableLHS[~__return_120426~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__z~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_39~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~19,] left hand side expression in assignment: lhs: VariableLHS[~__return_120430~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__u~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_40~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~19,] left hand side expression in assignment: lhs: VariableLHS[~__return_120435~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~8,] left hand side expression in assignment: lhs: VariableLHS[~main__v~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_120439_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__tmp_120439_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~8,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~8,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~9,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_41~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~20,] left hand side expression in assignment: lhs: VariableLHS[~__return_120473~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_42~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~20,] left hand side expression in assignment: lhs: VariableLHS[~__return_120477~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__z~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_43~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~21,] left hand side expression in assignment: lhs: VariableLHS[~__return_120481~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__u~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_44~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~21,] left hand side expression in assignment: lhs: VariableLHS[~__return_120486~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~9,] left hand side expression in assignment: lhs: VariableLHS[~main__v~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_120439_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__tmp_120439_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~9,] left hand side expression in assignment: lhs: VariableLHS[~main__t~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_2~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_45~0,] left hand side expression in assignment: lhs: VariableLHS[~__VERIFIER_assert__cond~0,] [2021-01-06 16:02:04,399 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/float-benchs/zonotope_3.c.v+lhb-reducer.c[12131,12144] left hand side expression in assignment: lhs: VariableLHS[~__return_120502~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_2~0,] [2021-01-06 16:02:04,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:02:04,426 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_120172~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_2~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_120176~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__z~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_3~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_120180~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__u~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_4~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_120184~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__v~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_5~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~2,] left hand side expression in assignment: lhs: VariableLHS[~__return_120198~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_6~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~2,] left hand side expression in assignment: lhs: VariableLHS[~__return_120202~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__z~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_7~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~3,] left hand side expression in assignment: lhs: VariableLHS[~__return_120206~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__u~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_8~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~3,] left hand side expression in assignment: lhs: VariableLHS[~__return_120211~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~main__v~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~1,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_9~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~4,] left hand side expression in assignment: lhs: VariableLHS[~__return_120226~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_10~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~4,] left hand side expression in assignment: lhs: VariableLHS[~__return_120230~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__z~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_11~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~5,] left hand side expression in assignment: lhs: VariableLHS[~__return_120234~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__u~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_12~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~5,] left hand side expression in assignment: lhs: VariableLHS[~__return_120239~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~main__v~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~2,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_13~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~6,] left hand side expression in assignment: lhs: VariableLHS[~__return_120254~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_14~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~6,] left hand side expression in assignment: lhs: VariableLHS[~__return_120258~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__z~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_15~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~7,] left hand side expression in assignment: lhs: VariableLHS[~__return_120262~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__u~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_16~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~7,] left hand side expression in assignment: lhs: VariableLHS[~__return_120267~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~2,] left hand side expression in assignment: lhs: VariableLHS[~main__v~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~3,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_17~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~8,] left hand side expression in assignment: lhs: VariableLHS[~__return_120282~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_18~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~8,] left hand side expression in assignment: lhs: VariableLHS[~__return_120286~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__z~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_19~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~9,] left hand side expression in assignment: lhs: VariableLHS[~__return_120290~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__u~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_20~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~9,] left hand side expression in assignment: lhs: VariableLHS[~__return_120295~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~3,] left hand side expression in assignment: lhs: VariableLHS[~main__v~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~4,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_21~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~10,] left hand side expression in assignment: lhs: VariableLHS[~__return_120310~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_22~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~10,] left hand side expression in assignment: lhs: VariableLHS[~__return_120314~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__z~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_23~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~11,] left hand side expression in assignment: lhs: VariableLHS[~__return_120318~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__u~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_24~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~11,] left hand side expression in assignment: lhs: VariableLHS[~__return_120323~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~4,] left hand side expression in assignment: lhs: VariableLHS[~main__v~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~5,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_25~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~12,] left hand side expression in assignment: lhs: VariableLHS[~__return_120338~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_26~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~12,] left hand side expression in assignment: lhs: VariableLHS[~__return_120342~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__z~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_27~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~13,] left hand side expression in assignment: lhs: VariableLHS[~__return_120346~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__u~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_28~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~13,] left hand side expression in assignment: lhs: VariableLHS[~__return_120351~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~5,] left hand side expression in assignment: lhs: VariableLHS[~main__v~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~6,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_29~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~14,] left hand side expression in assignment: lhs: VariableLHS[~__return_120366~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_30~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~14,] left hand side expression in assignment: lhs: VariableLHS[~__return_120370~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__z~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_31~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~15,] left hand side expression in assignment: lhs: VariableLHS[~__return_120374~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__u~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_32~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~15,] left hand side expression in assignment: lhs: VariableLHS[~__return_120379~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~6,] left hand side expression in assignment: lhs: VariableLHS[~main__v~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~7,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_33~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~16,] left hand side expression in assignment: lhs: VariableLHS[~__return_120394~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_34~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~16,] left hand side expression in assignment: lhs: VariableLHS[~__return_120398~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__z~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_35~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~17,] left hand side expression in assignment: lhs: VariableLHS[~__return_120402~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__u~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_36~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~17,] left hand side expression in assignment: lhs: VariableLHS[~__return_120407~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~7,] left hand side expression in assignment: lhs: VariableLHS[~main__v~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~8,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_37~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~18,] left hand side expression in assignment: lhs: VariableLHS[~__return_120422~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_38~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~18,] left hand side expression in assignment: lhs: VariableLHS[~__return_120426~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__z~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_39~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~19,] left hand side expression in assignment: lhs: VariableLHS[~__return_120430~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__u~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_40~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~19,] left hand side expression in assignment: lhs: VariableLHS[~__return_120435~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~8,] left hand side expression in assignment: lhs: VariableLHS[~main__v~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_120439_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__tmp_120439_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~8,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~8,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~9,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_41~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~20,] left hand side expression in assignment: lhs: VariableLHS[~__return_120473~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_42~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~20,] left hand side expression in assignment: lhs: VariableLHS[~__return_120477~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__z~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_43~0,] left hand side expression in assignment: lhs: VariableLHS[~f__x~21,] left hand side expression in assignment: lhs: VariableLHS[~__return_120481~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__u~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_44~0,] left hand side expression in assignment: lhs: VariableLHS[~g__x~21,] left hand side expression in assignment: lhs: VariableLHS[~__return_120486~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~9,] left hand side expression in assignment: lhs: VariableLHS[~main__v~0,] left hand side expression in assignment: lhs: VariableLHS[~main__i~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_120439_0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__tmp_120439_1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~9,] left hand side expression in assignment: lhs: VariableLHS[~main__t~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_2~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_45~0,] left hand side expression in assignment: lhs: VariableLHS[~__VERIFIER_assert__cond~0,] [2021-01-06 16:02:04,519 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/float-benchs/zonotope_3.c.v+lhb-reducer.c[12131,12144] left hand side expression in assignment: lhs: VariableLHS[~__return_120502~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_2~0,] [2021-01-06 16:02:04,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:02:04,554 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:02:04,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:04 WrapperNode [2021-01-06 16:02:04,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:02:04,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:02:04,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:02:04,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:02:04,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:04" (1/1) ... [2021-01-06 16:02:04,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:04" (1/1) ... [2021-01-06 16:02:04,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:02:04,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:02:04,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:02:04,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:02:04,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:04" (1/1) ... [2021-01-06 16:02:04,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:04" (1/1) ... [2021-01-06 16:02:04,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:04" (1/1) ... [2021-01-06 16:02:04,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:04" (1/1) ... [2021-01-06 16:02:04,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:04" (1/1) ... [2021-01-06 16:02:04,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:04" (1/1) ... [2021-01-06 16:02:04,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:04" (1/1) ... [2021-01-06 16:02:04,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:02:04,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:02:04,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:02:04,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:02:04,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:04" (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 [2021-01-06 16:02:04,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:02:04,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:02:04,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:02:04,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:02:05,594 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:02:05,594 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-06 16:02:05,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:02:05 BoogieIcfgContainer [2021-01-06 16:02:05,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:02:05,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:02:05,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:02:05,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:02:05,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:02:04" (1/3) ... [2021-01-06 16:02:05,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111c0584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:02:05, skipping insertion in model container [2021-01-06 16:02:05,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:02:04" (2/3) ... [2021-01-06 16:02:05,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111c0584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:02:05, skipping insertion in model container [2021-01-06 16:02:05,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:02:05" (3/3) ... [2021-01-06 16:02:05,610 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_3.c.v+lhb-reducer.c [2021-01-06 16:02:05,617 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:02:05,623 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:02:05,645 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:02:05,676 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:02:05,676 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:02:05,676 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:02:05,676 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:02:05,676 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:02:05,677 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:02:05,677 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:02:05,677 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:02:05,694 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2021-01-06 16:02:05,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 16:02:05,701 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:05,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:05,703 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:05,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:05,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1627818147, now seen corresponding path program 1 times [2021-01-06 16:02:05,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:05,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764732341] [2021-01-06 16:02:05,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:06,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:06,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764732341] [2021-01-06 16:02:06,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:02:06,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 16:02:06,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340763525] [2021-01-06 16:02:06,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 16:02:06,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:06,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 16:02:06,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:02:06,184 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 5 states. [2021-01-06 16:02:06,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:06,264 INFO L93 Difference]: Finished difference Result 70 states and 109 transitions. [2021-01-06 16:02:06,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 16:02:06,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2021-01-06 16:02:06,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:06,277 INFO L225 Difference]: With dead ends: 70 [2021-01-06 16:02:06,277 INFO L226 Difference]: Without dead ends: 51 [2021-01-06 16:02:06,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 16:02:06,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-01-06 16:02:06,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-01-06 16:02:06,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-01-06 16:02:06,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2021-01-06 16:02:06,325 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 45 [2021-01-06 16:02:06,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:06,326 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2021-01-06 16:02:06,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 16:02:06,327 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2021-01-06 16:02:06,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 16:02:06,328 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:06,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:06,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:02:06,329 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:06,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:06,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1610807486, now seen corresponding path program 1 times [2021-01-06 16:02:06,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:06,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737478675] [2021-01-06 16:02:06,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:06,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:06,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737478675] [2021-01-06 16:02:06,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:02:06,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-01-06 16:02:06,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140018738] [2021-01-06 16:02:06,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 16:02:06,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:06,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 16:02:06,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-01-06 16:02:06,646 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 12 states. [2021-01-06 16:02:06,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:06,797 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2021-01-06 16:02:06,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 16:02:06,798 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2021-01-06 16:02:06,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:06,800 INFO L225 Difference]: With dead ends: 64 [2021-01-06 16:02:06,800 INFO L226 Difference]: Without dead ends: 57 [2021-01-06 16:02:06,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-01-06 16:02:06,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-01-06 16:02:06,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2021-01-06 16:02:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-06 16:02:06,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2021-01-06 16:02:06,810 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 45 [2021-01-06 16:02:06,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:06,811 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2021-01-06 16:02:06,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 16:02:06,811 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2021-01-06 16:02:06,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-06 16:02:06,813 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:06,813 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-01-06 16:02:06,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:02:06,814 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:06,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:06,815 INFO L82 PathProgramCache]: Analyzing trace with hash -234002152, now seen corresponding path program 1 times [2021-01-06 16:02:06,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:06,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686141275] [2021-01-06 16:02:06,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:06,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:06,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686141275] [2021-01-06 16:02:06,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:02:06,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 16:02:06,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812315143] [2021-01-06 16:02:06,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 16:02:06,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:06,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 16:02:06,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:02:06,924 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 3 states. [2021-01-06 16:02:06,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:06,943 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2021-01-06 16:02:06,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 16:02:06,943 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2021-01-06 16:02:06,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:06,945 INFO L225 Difference]: With dead ends: 67 [2021-01-06 16:02:06,945 INFO L226 Difference]: Without dead ends: 52 [2021-01-06 16:02:06,946 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 [2021-01-06 16:02:06,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-06 16:02:06,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-01-06 16:02:06,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-01-06 16:02:06,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2021-01-06 16:02:06,953 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 50 [2021-01-06 16:02:06,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:06,954 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2021-01-06 16:02:06,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 16:02:06,954 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2021-01-06 16:02:06,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-06 16:02:06,956 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:06,956 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-01-06 16:02:06,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 16:02:06,956 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:06,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:06,957 INFO L82 PathProgramCache]: Analyzing trace with hash -686591427, now seen corresponding path program 1 times [2021-01-06 16:02:06,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:06,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155029190] [2021-01-06 16:02:06,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:07,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:07,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155029190] [2021-01-06 16:02:07,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138746571] [2021-01-06 16:02:07,146 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 [2021-01-06 16:02:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:07,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-06 16:02:07,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:07,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:07,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:07,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-01-06 16:02:07,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205698021] [2021-01-06 16:02:07,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 16:02:07,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:07,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 16:02:07,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-01-06 16:02:07,639 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 14 states. [2021-01-06 16:02:07,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:07,734 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2021-01-06 16:02:07,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 16:02:07,735 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2021-01-06 16:02:07,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:07,736 INFO L225 Difference]: With dead ends: 67 [2021-01-06 16:02:07,736 INFO L226 Difference]: Without dead ends: 60 [2021-01-06 16:02:07,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-01-06 16:02:07,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-01-06 16:02:07,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2021-01-06 16:02:07,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-01-06 16:02:07,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2021-01-06 16:02:07,744 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 50 [2021-01-06 16:02:07,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:07,744 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2021-01-06 16:02:07,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 16:02:07,745 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2021-01-06 16:02:07,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-01-06 16:02:07,746 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:07,746 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2021-01-06 16:02:07,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:07,951 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:07,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:07,953 INFO L82 PathProgramCache]: Analyzing trace with hash 733981730, now seen corresponding path program 2 times [2021-01-06 16:02:07,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:07,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447510461] [2021-01-06 16:02:07,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:08,183 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:08,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447510461] [2021-01-06 16:02:08,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675559681] [2021-01-06 16:02:08,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2021-01-06 16:02:08,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:02:08,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:08,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-06 16:02:08,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:08,537 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:08,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:08,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-01-06 16:02:08,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834480497] [2021-01-06 16:02:08,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 16:02:08,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:08,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 16:02:08,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-01-06 16:02:08,540 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 15 states. [2021-01-06 16:02:08,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:08,652 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2021-01-06 16:02:08,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 16:02:08,652 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2021-01-06 16:02:08,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:08,653 INFO L225 Difference]: With dead ends: 72 [2021-01-06 16:02:08,654 INFO L226 Difference]: Without dead ends: 65 [2021-01-06 16:02:08,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-01-06 16:02:08,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-01-06 16:02:08,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2021-01-06 16:02:08,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-01-06 16:02:08,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2021-01-06 16:02:08,661 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 55 [2021-01-06 16:02:08,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:08,661 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2021-01-06 16:02:08,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 16:02:08,662 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2021-01-06 16:02:08,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-01-06 16:02:08,663 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:08,663 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:08,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:08,878 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:08,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:08,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1382753955, now seen corresponding path program 3 times [2021-01-06 16:02:08,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:08,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294920371] [2021-01-06 16:02:08,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:09,063 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:09,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294920371] [2021-01-06 16:02:09,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410212801] [2021-01-06 16:02:09,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2021-01-06 16:02:09,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-06 16:02:09,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:09,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-06 16:02:09,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:09,365 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:09,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:09,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-01-06 16:02:09,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026977660] [2021-01-06 16:02:09,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-06 16:02:09,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:09,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-06 16:02:09,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-01-06 16:02:09,368 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 16 states. [2021-01-06 16:02:09,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:09,507 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2021-01-06 16:02:09,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 16:02:09,508 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 60 [2021-01-06 16:02:09,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:09,509 INFO L225 Difference]: With dead ends: 77 [2021-01-06 16:02:09,509 INFO L226 Difference]: Without dead ends: 70 [2021-01-06 16:02:09,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-01-06 16:02:09,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-01-06 16:02:09,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2021-01-06 16:02:09,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-01-06 16:02:09,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2021-01-06 16:02:09,516 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 60 [2021-01-06 16:02:09,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:09,516 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2021-01-06 16:02:09,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-06 16:02:09,517 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2021-01-06 16:02:09,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-01-06 16:02:09,518 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:09,518 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:09,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:09,732 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:09,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:09,733 INFO L82 PathProgramCache]: Analyzing trace with hash 933345538, now seen corresponding path program 4 times [2021-01-06 16:02:09,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:09,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847379180] [2021-01-06 16:02:09,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:09,940 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:09,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847379180] [2021-01-06 16:02:09,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019169106] [2021-01-06 16:02:09,943 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:10,151 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 16:02:10,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:10,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 16:02:10,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:10,281 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:10,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:10,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-01-06 16:02:10,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62895492] [2021-01-06 16:02:10,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 16:02:10,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:10,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 16:02:10,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-01-06 16:02:10,285 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 17 states. [2021-01-06 16:02:10,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:10,418 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2021-01-06 16:02:10,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 16:02:10,418 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2021-01-06 16:02:10,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:10,421 INFO L225 Difference]: With dead ends: 82 [2021-01-06 16:02:10,422 INFO L226 Difference]: Without dead ends: 75 [2021-01-06 16:02:10,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-01-06 16:02:10,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-01-06 16:02:10,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2021-01-06 16:02:10,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-01-06 16:02:10,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2021-01-06 16:02:10,444 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 65 [2021-01-06 16:02:10,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:10,445 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2021-01-06 16:02:10,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 16:02:10,445 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2021-01-06 16:02:10,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-01-06 16:02:10,448 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:10,448 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:10,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:10,664 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:10,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:10,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1218979715, now seen corresponding path program 5 times [2021-01-06 16:02:10,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:10,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722051360] [2021-01-06 16:02:10,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:10,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722051360] [2021-01-06 16:02:10,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372434059] [2021-01-06 16:02:10,905 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:11,109 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-01-06 16:02:11,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:11,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 16:02:11,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:11,231 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:11,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:11,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-01-06 16:02:11,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545604747] [2021-01-06 16:02:11,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 16:02:11,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:11,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 16:02:11,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-01-06 16:02:11,234 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand 18 states. [2021-01-06 16:02:11,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:11,344 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2021-01-06 16:02:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 16:02:11,345 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 70 [2021-01-06 16:02:11,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:11,346 INFO L225 Difference]: With dead ends: 87 [2021-01-06 16:02:11,346 INFO L226 Difference]: Without dead ends: 80 [2021-01-06 16:02:11,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-01-06 16:02:11,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-01-06 16:02:11,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2021-01-06 16:02:11,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-01-06 16:02:11,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2021-01-06 16:02:11,353 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 70 [2021-01-06 16:02:11,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:11,353 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2021-01-06 16:02:11,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 16:02:11,353 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2021-01-06 16:02:11,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-01-06 16:02:11,355 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:11,355 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:11,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:11,569 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:11,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:11,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1367420386, now seen corresponding path program 6 times [2021-01-06 16:02:11,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:11,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290982887] [2021-01-06 16:02:11,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:11,937 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:11,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290982887] [2021-01-06 16:02:11,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562343061] [2021-01-06 16:02:11,938 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:12,267 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-06 16:02:12,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:12,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 16:02:12,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:12,413 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:12,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:12,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-01-06 16:02:12,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655524978] [2021-01-06 16:02:12,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-06 16:02:12,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:12,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-06 16:02:12,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-01-06 16:02:12,416 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 19 states. [2021-01-06 16:02:12,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:12,524 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2021-01-06 16:02:12,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-06 16:02:12,525 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 75 [2021-01-06 16:02:12,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:12,526 INFO L225 Difference]: With dead ends: 92 [2021-01-06 16:02:12,526 INFO L226 Difference]: Without dead ends: 85 [2021-01-06 16:02:12,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-01-06 16:02:12,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-01-06 16:02:12,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2021-01-06 16:02:12,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-01-06 16:02:12,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2021-01-06 16:02:12,543 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 75 [2021-01-06 16:02:12,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:12,544 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2021-01-06 16:02:12,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-06 16:02:12,546 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2021-01-06 16:02:12,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-06 16:02:12,548 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:12,548 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:12,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:12,764 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:12,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:12,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1631481757, now seen corresponding path program 7 times [2021-01-06 16:02:12,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:12,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809840966] [2021-01-06 16:02:12,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:13,115 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:13,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809840966] [2021-01-06 16:02:13,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178457056] [2021-01-06 16:02:13,116 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:13,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 16:02:13,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:13,606 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:13,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:13,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-01-06 16:02:13,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638317066] [2021-01-06 16:02:13,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-06 16:02:13,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:13,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-06 16:02:13,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-01-06 16:02:13,612 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand 20 states. [2021-01-06 16:02:13,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:13,748 INFO L93 Difference]: Finished difference Result 97 states and 99 transitions. [2021-01-06 16:02:13,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-06 16:02:13,749 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 80 [2021-01-06 16:02:13,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:13,750 INFO L225 Difference]: With dead ends: 97 [2021-01-06 16:02:13,750 INFO L226 Difference]: Without dead ends: 90 [2021-01-06 16:02:13,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-01-06 16:02:13,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-01-06 16:02:13,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2021-01-06 16:02:13,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-01-06 16:02:13,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2021-01-06 16:02:13,766 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 80 [2021-01-06 16:02:13,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:13,767 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2021-01-06 16:02:13,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-06 16:02:13,767 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2021-01-06 16:02:13,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-01-06 16:02:13,770 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:13,770 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:13,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 16:02:13,984 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:13,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:13,985 INFO L82 PathProgramCache]: Analyzing trace with hash -910423358, now seen corresponding path program 8 times [2021-01-06 16:02:13,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:13,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618498875] [2021-01-06 16:02:13,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:14,317 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:14,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618498875] [2021-01-06 16:02:14,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584997054] [2021-01-06 16:02:14,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:14,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:02:14,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:14,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 16:02:14,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:14,645 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:14,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:14,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-01-06 16:02:14,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337405004] [2021-01-06 16:02:14,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-06 16:02:14,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:14,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-06 16:02:14,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-01-06 16:02:14,648 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 21 states. [2021-01-06 16:02:14,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:14,792 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2021-01-06 16:02:14,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-06 16:02:14,793 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 85 [2021-01-06 16:02:14,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:14,794 INFO L225 Difference]: With dead ends: 102 [2021-01-06 16:02:14,794 INFO L226 Difference]: Without dead ends: 95 [2021-01-06 16:02:14,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-01-06 16:02:14,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-01-06 16:02:14,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 92. [2021-01-06 16:02:14,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-01-06 16:02:14,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2021-01-06 16:02:14,803 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 85 [2021-01-06 16:02:14,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:14,803 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2021-01-06 16:02:14,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-06 16:02:14,803 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2021-01-06 16:02:14,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-01-06 16:02:14,804 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:14,805 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:15,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-06 16:02:15,019 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:15,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:15,020 INFO L82 PathProgramCache]: Analyzing trace with hash -441803075, now seen corresponding path program 9 times [2021-01-06 16:02:15,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:15,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254121252] [2021-01-06 16:02:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:15,373 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:15,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254121252] [2021-01-06 16:02:15,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907779343] [2021-01-06 16:02:15,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:15,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-06 16:02:15,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:15,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 16:02:15,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:15,750 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:15,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:15,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-01-06 16:02:15,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108866221] [2021-01-06 16:02:15,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-06 16:02:15,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:15,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-06 16:02:15,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-01-06 16:02:15,753 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand 22 states. [2021-01-06 16:02:15,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:15,886 INFO L93 Difference]: Finished difference Result 107 states and 109 transitions. [2021-01-06 16:02:15,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-06 16:02:15,902 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 90 [2021-01-06 16:02:15,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:15,907 INFO L225 Difference]: With dead ends: 107 [2021-01-06 16:02:15,907 INFO L226 Difference]: Without dead ends: 100 [2021-01-06 16:02:15,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-01-06 16:02:15,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-01-06 16:02:15,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 97. [2021-01-06 16:02:15,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2021-01-06 16:02:15,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2021-01-06 16:02:15,913 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 90 [2021-01-06 16:02:15,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:15,914 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2021-01-06 16:02:15,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-06 16:02:15,914 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2021-01-06 16:02:15,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-01-06 16:02:15,915 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:15,915 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:16,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:16,130 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:16,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:16,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1825550430, now seen corresponding path program 10 times [2021-01-06 16:02:16,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:16,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153681368] [2021-01-06 16:02:16,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:16,451 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:16,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153681368] [2021-01-06 16:02:16,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287581226] [2021-01-06 16:02:16,452 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:16,700 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 16:02:16,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:16,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 16:02:16,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:16,845 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:16,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:16,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-01-06 16:02:16,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353728833] [2021-01-06 16:02:16,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-06 16:02:16,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:16,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-06 16:02:16,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-01-06 16:02:16,847 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 23 states. [2021-01-06 16:02:17,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:17,017 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2021-01-06 16:02:17,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-06 16:02:17,017 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 95 [2021-01-06 16:02:17,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:17,019 INFO L225 Difference]: With dead ends: 112 [2021-01-06 16:02:17,019 INFO L226 Difference]: Without dead ends: 105 [2021-01-06 16:02:17,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-01-06 16:02:17,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-01-06 16:02:17,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 102. [2021-01-06 16:02:17,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2021-01-06 16:02:17,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2021-01-06 16:02:17,026 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 95 [2021-01-06 16:02:17,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:17,026 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2021-01-06 16:02:17,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-06 16:02:17,027 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2021-01-06 16:02:17,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-01-06 16:02:17,027 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:17,028 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:17,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:17,244 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:17,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:17,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1820222941, now seen corresponding path program 11 times [2021-01-06 16:02:17,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:17,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254441483] [2021-01-06 16:02:17,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:17,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254441483] [2021-01-06 16:02:17,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836220890] [2021-01-06 16:02:17,624 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:17,870 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-01-06 16:02:17,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:17,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 16:02:17,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:18,012 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:18,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:18,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-01-06 16:02:18,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767644380] [2021-01-06 16:02:18,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-06 16:02:18,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:18,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-06 16:02:18,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-01-06 16:02:18,016 INFO L87 Difference]: Start difference. First operand 102 states and 103 transitions. Second operand 24 states. [2021-01-06 16:02:18,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:18,141 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2021-01-06 16:02:18,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-06 16:02:18,142 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 100 [2021-01-06 16:02:18,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:18,143 INFO L225 Difference]: With dead ends: 117 [2021-01-06 16:02:18,143 INFO L226 Difference]: Without dead ends: 110 [2021-01-06 16:02:18,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-01-06 16:02:18,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-01-06 16:02:18,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 107. [2021-01-06 16:02:18,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2021-01-06 16:02:18,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2021-01-06 16:02:18,151 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 100 [2021-01-06 16:02:18,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:18,152 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2021-01-06 16:02:18,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-01-06 16:02:18,152 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2021-01-06 16:02:18,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-01-06 16:02:18,153 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:18,153 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:18,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 16:02:18,367 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:18,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:18,368 INFO L82 PathProgramCache]: Analyzing trace with hash 591133826, now seen corresponding path program 12 times [2021-01-06 16:02:18,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:18,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817441723] [2021-01-06 16:02:18,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:18,735 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:18,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817441723] [2021-01-06 16:02:18,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585726049] [2021-01-06 16:02:18,736 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:19,007 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-01-06 16:02:19,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:19,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 16:02:19,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:19,162 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:19,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:19,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-06 16:02:19,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005942256] [2021-01-06 16:02:19,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-06 16:02:19,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:19,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-06 16:02:19,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-01-06 16:02:19,165 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 25 states. [2021-01-06 16:02:19,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:19,324 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2021-01-06 16:02:19,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-06 16:02:19,329 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 105 [2021-01-06 16:02:19,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:19,330 INFO L225 Difference]: With dead ends: 122 [2021-01-06 16:02:19,331 INFO L226 Difference]: Without dead ends: 115 [2021-01-06 16:02:19,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-01-06 16:02:19,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-01-06 16:02:19,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 112. [2021-01-06 16:02:19,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2021-01-06 16:02:19,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2021-01-06 16:02:19,342 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 105 [2021-01-06 16:02:19,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:19,342 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2021-01-06 16:02:19,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-01-06 16:02:19,342 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2021-01-06 16:02:19,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-01-06 16:02:19,344 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:19,344 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:19,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-06 16:02:19,560 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:19,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:19,561 INFO L82 PathProgramCache]: Analyzing trace with hash 723240189, now seen corresponding path program 13 times [2021-01-06 16:02:19,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:19,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386584066] [2021-01-06 16:02:19,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:20,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386584066] [2021-01-06 16:02:20,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423127023] [2021-01-06 16:02:20,007 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:20,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-06 16:02:20,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:20,440 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:20,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:20,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-01-06 16:02:20,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559619312] [2021-01-06 16:02:20,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-06 16:02:20,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:20,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-06 16:02:20,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-01-06 16:02:20,443 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand 26 states. [2021-01-06 16:02:20,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:20,585 INFO L93 Difference]: Finished difference Result 127 states and 129 transitions. [2021-01-06 16:02:20,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-06 16:02:20,585 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 110 [2021-01-06 16:02:20,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:20,586 INFO L225 Difference]: With dead ends: 127 [2021-01-06 16:02:20,587 INFO L226 Difference]: Without dead ends: 120 [2021-01-06 16:02:20,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-01-06 16:02:20,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-01-06 16:02:20,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2021-01-06 16:02:20,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2021-01-06 16:02:20,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2021-01-06 16:02:20,594 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 110 [2021-01-06 16:02:20,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:20,594 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2021-01-06 16:02:20,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-01-06 16:02:20,595 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2021-01-06 16:02:20,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-01-06 16:02:20,596 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:20,596 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:20,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 16:02:20,812 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:20,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:20,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1371345250, now seen corresponding path program 14 times [2021-01-06 16:02:20,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:20,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599576697] [2021-01-06 16:02:20,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:21,240 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:21,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599576697] [2021-01-06 16:02:21,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431814131] [2021-01-06 16:02:21,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:21,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:02:21,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:21,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 16:02:21,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:21,704 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:21,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:21,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-01-06 16:02:21,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578654935] [2021-01-06 16:02:21,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-01-06 16:02:21,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:21,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-01-06 16:02:21,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-01-06 16:02:21,710 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand 27 states. [2021-01-06 16:02:21,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:21,877 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2021-01-06 16:02:21,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-06 16:02:21,880 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 115 [2021-01-06 16:02:21,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:21,881 INFO L225 Difference]: With dead ends: 132 [2021-01-06 16:02:21,881 INFO L226 Difference]: Without dead ends: 125 [2021-01-06 16:02:21,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-01-06 16:02:21,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-01-06 16:02:21,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 122. [2021-01-06 16:02:21,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2021-01-06 16:02:21,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2021-01-06 16:02:21,887 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 115 [2021-01-06 16:02:21,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:21,888 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2021-01-06 16:02:21,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-01-06 16:02:21,888 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2021-01-06 16:02:21,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-01-06 16:02:21,889 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:21,889 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:22,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:22,103 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:22,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:22,104 INFO L82 PathProgramCache]: Analyzing trace with hash -2073773027, now seen corresponding path program 15 times [2021-01-06 16:02:22,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:22,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792905474] [2021-01-06 16:02:22,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:22,597 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:22,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792905474] [2021-01-06 16:02:22,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125678299] [2021-01-06 16:02:22,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:22,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-01-06 16:02:22,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:22,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 1108 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-06 16:02:22,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:23,072 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:23,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:23,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-01-06 16:02:23,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275039136] [2021-01-06 16:02:23,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-06 16:02:23,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:23,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-06 16:02:23,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-01-06 16:02:23,074 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand 28 states. [2021-01-06 16:02:23,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:23,250 INFO L93 Difference]: Finished difference Result 137 states and 139 transitions. [2021-01-06 16:02:23,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-06 16:02:23,250 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 120 [2021-01-06 16:02:23,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:23,251 INFO L225 Difference]: With dead ends: 137 [2021-01-06 16:02:23,252 INFO L226 Difference]: Without dead ends: 130 [2021-01-06 16:02:23,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-01-06 16:02:23,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-01-06 16:02:23,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2021-01-06 16:02:23,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2021-01-06 16:02:23,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2021-01-06 16:02:23,259 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 120 [2021-01-06 16:02:23,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:23,260 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2021-01-06 16:02:23,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-01-06 16:02:23,260 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2021-01-06 16:02:23,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-01-06 16:02:23,261 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:23,261 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:23,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 16:02:23,476 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:23,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:23,477 INFO L82 PathProgramCache]: Analyzing trace with hash 957451842, now seen corresponding path program 16 times [2021-01-06 16:02:23,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:23,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525402339] [2021-01-06 16:02:23,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:24,003 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:24,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525402339] [2021-01-06 16:02:24,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059239378] [2021-01-06 16:02:24,004 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:24,351 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 16:02:24,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:24,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 16:02:24,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:24,527 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:24,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:24,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-01-06 16:02:24,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776349335] [2021-01-06 16:02:24,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-01-06 16:02:24,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:24,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-01-06 16:02:24,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-01-06 16:02:24,529 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 29 states. [2021-01-06 16:02:24,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:24,686 INFO L93 Difference]: Finished difference Result 142 states and 144 transitions. [2021-01-06 16:02:24,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-06 16:02:24,687 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 125 [2021-01-06 16:02:24,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:24,688 INFO L225 Difference]: With dead ends: 142 [2021-01-06 16:02:24,689 INFO L226 Difference]: Without dead ends: 135 [2021-01-06 16:02:24,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-01-06 16:02:24,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-01-06 16:02:24,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 132. [2021-01-06 16:02:24,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2021-01-06 16:02:24,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 133 transitions. [2021-01-06 16:02:24,698 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 133 transitions. Word has length 125 [2021-01-06 16:02:24,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:24,698 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 133 transitions. [2021-01-06 16:02:24,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-01-06 16:02:24,698 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 133 transitions. [2021-01-06 16:02:24,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-01-06 16:02:24,700 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:24,700 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:24,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:24,916 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:24,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:24,917 INFO L82 PathProgramCache]: Analyzing trace with hash 683363133, now seen corresponding path program 17 times [2021-01-06 16:02:24,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:24,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155932948] [2021-01-06 16:02:24,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:24,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:25,455 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:25,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155932948] [2021-01-06 16:02:25,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739745790] [2021-01-06 16:02:25,456 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:25,776 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-01-06 16:02:25,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:25,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-06 16:02:25,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:25,947 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:25,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:25,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-01-06 16:02:25,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646727983] [2021-01-06 16:02:25,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-01-06 16:02:25,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:25,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-01-06 16:02:25,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-01-06 16:02:25,950 INFO L87 Difference]: Start difference. First operand 132 states and 133 transitions. Second operand 30 states. [2021-01-06 16:02:26,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:26,107 INFO L93 Difference]: Finished difference Result 147 states and 149 transitions. [2021-01-06 16:02:26,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-06 16:02:26,108 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 130 [2021-01-06 16:02:26,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:26,109 INFO L225 Difference]: With dead ends: 147 [2021-01-06 16:02:26,109 INFO L226 Difference]: Without dead ends: 140 [2021-01-06 16:02:26,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-01-06 16:02:26,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-01-06 16:02:26,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 137. [2021-01-06 16:02:26,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2021-01-06 16:02:26,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2021-01-06 16:02:26,119 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 130 [2021-01-06 16:02:26,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:26,119 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2021-01-06 16:02:26,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-01-06 16:02:26,120 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2021-01-06 16:02:26,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-01-06 16:02:26,121 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:26,121 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:26,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:26,336 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:26,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:26,337 INFO L82 PathProgramCache]: Analyzing trace with hash 370635554, now seen corresponding path program 18 times [2021-01-06 16:02:26,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:26,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441770562] [2021-01-06 16:02:26,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:26,899 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:26,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441770562] [2021-01-06 16:02:26,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207001688] [2021-01-06 16:02:26,900 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:27,252 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-01-06 16:02:27,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:27,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-06 16:02:27,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:27,446 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:27,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:27,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-01-06 16:02:27,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714923675] [2021-01-06 16:02:27,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-01-06 16:02:27,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:27,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-01-06 16:02:27,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-01-06 16:02:27,448 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand 31 states. [2021-01-06 16:02:27,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:27,635 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2021-01-06 16:02:27,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-06 16:02:27,636 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 135 [2021-01-06 16:02:27,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:27,637 INFO L225 Difference]: With dead ends: 152 [2021-01-06 16:02:27,637 INFO L226 Difference]: Without dead ends: 145 [2021-01-06 16:02:27,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-01-06 16:02:27,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-01-06 16:02:27,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 142. [2021-01-06 16:02:27,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2021-01-06 16:02:27,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 143 transitions. [2021-01-06 16:02:27,647 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 143 transitions. Word has length 135 [2021-01-06 16:02:27,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:27,647 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 143 transitions. [2021-01-06 16:02:27,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2021-01-06 16:02:27,647 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 143 transitions. [2021-01-06 16:02:27,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-01-06 16:02:27,648 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:27,649 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:27,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-06 16:02:27,863 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:27,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:27,864 INFO L82 PathProgramCache]: Analyzing trace with hash 906064477, now seen corresponding path program 19 times [2021-01-06 16:02:27,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:27,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646301826] [2021-01-06 16:02:27,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:28,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646301826] [2021-01-06 16:02:28,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46073361] [2021-01-06 16:02:28,505 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:28,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-06 16:02:28,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:29,005 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:29,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:29,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-01-06 16:02:29,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451552295] [2021-01-06 16:02:29,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-01-06 16:02:29,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:29,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-01-06 16:02:29,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-01-06 16:02:29,008 INFO L87 Difference]: Start difference. First operand 142 states and 143 transitions. Second operand 32 states. [2021-01-06 16:02:29,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:29,177 INFO L93 Difference]: Finished difference Result 157 states and 159 transitions. [2021-01-06 16:02:29,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-06 16:02:29,180 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 140 [2021-01-06 16:02:29,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:29,181 INFO L225 Difference]: With dead ends: 157 [2021-01-06 16:02:29,181 INFO L226 Difference]: Without dead ends: 150 [2021-01-06 16:02:29,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-01-06 16:02:29,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-01-06 16:02:29,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 147. [2021-01-06 16:02:29,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2021-01-06 16:02:29,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2021-01-06 16:02:29,192 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 140 [2021-01-06 16:02:29,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:29,192 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2021-01-06 16:02:29,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2021-01-06 16:02:29,192 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2021-01-06 16:02:29,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-01-06 16:02:29,194 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:29,194 INFO L422 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:29,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:29,408 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:29,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:29,409 INFO L82 PathProgramCache]: Analyzing trace with hash 674021378, now seen corresponding path program 20 times [2021-01-06 16:02:29,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:29,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166026351] [2021-01-06 16:02:29,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:30,084 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:30,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166026351] [2021-01-06 16:02:30,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110368071] [2021-01-06 16:02:30,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:30,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:02:30,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:30,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 16:02:30,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:30,620 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:30,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:30,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-01-06 16:02:30,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553568481] [2021-01-06 16:02:30,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-01-06 16:02:30,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:30,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-01-06 16:02:30,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-01-06 16:02:30,623 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 33 states. [2021-01-06 16:02:30,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:30,830 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2021-01-06 16:02:30,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-06 16:02:30,831 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 145 [2021-01-06 16:02:30,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:30,832 INFO L225 Difference]: With dead ends: 162 [2021-01-06 16:02:30,833 INFO L226 Difference]: Without dead ends: 155 [2021-01-06 16:02:30,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-01-06 16:02:30,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-01-06 16:02:30,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 152. [2021-01-06 16:02:30,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2021-01-06 16:02:30,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2021-01-06 16:02:30,846 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 145 [2021-01-06 16:02:30,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:30,846 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2021-01-06 16:02:30,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2021-01-06 16:02:30,846 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2021-01-06 16:02:30,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-01-06 16:02:30,848 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:30,848 INFO L422 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:31,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-01-06 16:02:31,063 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:31,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:31,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1469657469, now seen corresponding path program 21 times [2021-01-06 16:02:31,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:31,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698640819] [2021-01-06 16:02:31,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:31,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:31,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698640819] [2021-01-06 16:02:31,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842180477] [2021-01-06 16:02:31,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:32,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-01-06 16:02:32,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:32,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 1360 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-06 16:02:32,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:32,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:32,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:32,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-01-06 16:02:32,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764799707] [2021-01-06 16:02:32,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-01-06 16:02:32,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:32,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-01-06 16:02:32,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-01-06 16:02:32,388 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand 34 states. [2021-01-06 16:02:32,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:32,599 INFO L93 Difference]: Finished difference Result 167 states and 169 transitions. [2021-01-06 16:02:32,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-06 16:02:32,600 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 150 [2021-01-06 16:02:32,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:32,601 INFO L225 Difference]: With dead ends: 167 [2021-01-06 16:02:32,601 INFO L226 Difference]: Without dead ends: 160 [2021-01-06 16:02:32,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-01-06 16:02:32,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-01-06 16:02:32,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 157. [2021-01-06 16:02:32,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2021-01-06 16:02:32,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2021-01-06 16:02:32,612 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 150 [2021-01-06 16:02:32,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:32,612 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2021-01-06 16:02:32,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2021-01-06 16:02:32,612 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2021-01-06 16:02:32,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-01-06 16:02:32,614 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:32,614 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:32,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-01-06 16:02:32,829 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:32,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:32,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1859160862, now seen corresponding path program 22 times [2021-01-06 16:02:32,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:32,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671000702] [2021-01-06 16:02:32,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:33,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:33,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671000702] [2021-01-06 16:02:33,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775892996] [2021-01-06 16:02:33,547 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:33,879 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 16:02:33,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:33,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-06 16:02:33,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:34,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:34,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-01-06 16:02:34,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933317722] [2021-01-06 16:02:34,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-01-06 16:02:34,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:34,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-01-06 16:02:34,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-01-06 16:02:34,090 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand 35 states. [2021-01-06 16:02:34,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:34,272 INFO L93 Difference]: Finished difference Result 172 states and 174 transitions. [2021-01-06 16:02:34,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-06 16:02:34,272 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 155 [2021-01-06 16:02:34,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:34,274 INFO L225 Difference]: With dead ends: 172 [2021-01-06 16:02:34,274 INFO L226 Difference]: Without dead ends: 165 [2021-01-06 16:02:34,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-01-06 16:02:34,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-01-06 16:02:34,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 162. [2021-01-06 16:02:34,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2021-01-06 16:02:34,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 163 transitions. [2021-01-06 16:02:34,281 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 163 transitions. Word has length 155 [2021-01-06 16:02:34,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:34,282 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 163 transitions. [2021-01-06 16:02:34,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2021-01-06 16:02:34,282 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 163 transitions. [2021-01-06 16:02:34,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-01-06 16:02:34,283 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:34,283 INFO L422 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:34,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:34,497 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:34,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:34,498 INFO L82 PathProgramCache]: Analyzing trace with hash -429619043, now seen corresponding path program 23 times [2021-01-06 16:02:34,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:34,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237561945] [2021-01-06 16:02:34,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:35,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:35,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237561945] [2021-01-06 16:02:35,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602981263] [2021-01-06 16:02:35,240 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:35,632 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-01-06 16:02:35,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:35,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-06 16:02:35,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:35,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:35,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:35,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-01-06 16:02:35,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610479826] [2021-01-06 16:02:35,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-01-06 16:02:35,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:35,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-01-06 16:02:35,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-01-06 16:02:35,832 INFO L87 Difference]: Start difference. First operand 162 states and 163 transitions. Second operand 36 states. [2021-01-06 16:02:36,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:36,021 INFO L93 Difference]: Finished difference Result 177 states and 179 transitions. [2021-01-06 16:02:36,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-06 16:02:36,022 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 160 [2021-01-06 16:02:36,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:36,023 INFO L225 Difference]: With dead ends: 177 [2021-01-06 16:02:36,023 INFO L226 Difference]: Without dead ends: 170 [2021-01-06 16:02:36,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-01-06 16:02:36,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-01-06 16:02:36,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2021-01-06 16:02:36,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2021-01-06 16:02:36,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2021-01-06 16:02:36,034 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 160 [2021-01-06 16:02:36,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:36,035 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2021-01-06 16:02:36,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-01-06 16:02:36,035 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2021-01-06 16:02:36,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-01-06 16:02:36,036 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:36,036 INFO L422 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:36,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-06 16:02:36,251 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:36,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:36,252 INFO L82 PathProgramCache]: Analyzing trace with hash 897421762, now seen corresponding path program 24 times [2021-01-06 16:02:36,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:36,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320160119] [2021-01-06 16:02:36,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:37,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:37,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320160119] [2021-01-06 16:02:37,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110063213] [2021-01-06 16:02:37,057 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:37,493 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-01-06 16:02:37,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:37,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 1486 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-06 16:02:37,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:37,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:37,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:37,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-01-06 16:02:37,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209217253] [2021-01-06 16:02:37,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-01-06 16:02:37,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:37,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-01-06 16:02:37,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-01-06 16:02:37,704 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 37 states. [2021-01-06 16:02:37,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:37,898 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2021-01-06 16:02:37,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-06 16:02:37,903 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 165 [2021-01-06 16:02:37,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:37,905 INFO L225 Difference]: With dead ends: 182 [2021-01-06 16:02:37,905 INFO L226 Difference]: Without dead ends: 175 [2021-01-06 16:02:37,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-01-06 16:02:37,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-01-06 16:02:37,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 172. [2021-01-06 16:02:37,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2021-01-06 16:02:37,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 173 transitions. [2021-01-06 16:02:37,918 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 173 transitions. Word has length 165 [2021-01-06 16:02:37,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:37,918 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 173 transitions. [2021-01-06 16:02:37,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2021-01-06 16:02:37,918 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 173 transitions. [2021-01-06 16:02:37,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-01-06 16:02:37,919 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:37,919 INFO L422 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:38,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:38,133 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:38,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:38,134 INFO L82 PathProgramCache]: Analyzing trace with hash 147158973, now seen corresponding path program 25 times [2021-01-06 16:02:38,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:38,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787189228] [2021-01-06 16:02:38,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:39,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 0 proven. 1550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:39,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787189228] [2021-01-06 16:02:39,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080355615] [2021-01-06 16:02:39,052 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:39,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 1528 conjuncts, 36 conjunts are in the unsatisfiable core [2021-01-06 16:02:39,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:39,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 0 proven. 1550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:39,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:39,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-01-06 16:02:39,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246074324] [2021-01-06 16:02:39,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-01-06 16:02:39,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:39,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-01-06 16:02:39,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-01-06 16:02:39,628 INFO L87 Difference]: Start difference. First operand 172 states and 173 transitions. Second operand 38 states. [2021-01-06 16:02:39,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:39,829 INFO L93 Difference]: Finished difference Result 187 states and 189 transitions. [2021-01-06 16:02:39,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-01-06 16:02:39,829 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 170 [2021-01-06 16:02:39,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:39,830 INFO L225 Difference]: With dead ends: 187 [2021-01-06 16:02:39,831 INFO L226 Difference]: Without dead ends: 180 [2021-01-06 16:02:39,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-01-06 16:02:39,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-01-06 16:02:39,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 177. [2021-01-06 16:02:39,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2021-01-06 16:02:39,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2021-01-06 16:02:39,840 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 170 [2021-01-06 16:02:39,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:39,840 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2021-01-06 16:02:39,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2021-01-06 16:02:39,841 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2021-01-06 16:02:39,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-01-06 16:02:39,841 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:39,841 INFO L422 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:40,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-01-06 16:02:40,042 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:40,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:40,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1678436702, now seen corresponding path program 26 times [2021-01-06 16:02:40,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:40,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221968338] [2021-01-06 16:02:40,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:41,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 0 proven. 1677 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:41,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221968338] [2021-01-06 16:02:41,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958907185] [2021-01-06 16:02:41,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:41,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:02:41,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:41,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 1570 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-06 16:02:41,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:41,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 0 proven. 1677 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:41,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:41,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-01-06 16:02:41,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284287780] [2021-01-06 16:02:41,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-01-06 16:02:41,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:41,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-01-06 16:02:41,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-01-06 16:02:41,594 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand 39 states. [2021-01-06 16:02:41,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:41,823 INFO L93 Difference]: Finished difference Result 192 states and 194 transitions. [2021-01-06 16:02:41,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-01-06 16:02:41,824 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 175 [2021-01-06 16:02:41,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:41,825 INFO L225 Difference]: With dead ends: 192 [2021-01-06 16:02:41,825 INFO L226 Difference]: Without dead ends: 185 [2021-01-06 16:02:41,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-01-06 16:02:41,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-01-06 16:02:41,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 182. [2021-01-06 16:02:41,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2021-01-06 16:02:41,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 183 transitions. [2021-01-06 16:02:41,835 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 183 transitions. Word has length 175 [2021-01-06 16:02:41,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:41,835 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 183 transitions. [2021-01-06 16:02:41,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2021-01-06 16:02:41,835 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 183 transitions. [2021-01-06 16:02:41,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 16:02:41,836 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:41,837 INFO L422 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:42,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-06 16:02:42,053 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:42,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:42,054 INFO L82 PathProgramCache]: Analyzing trace with hash -761397539, now seen corresponding path program 27 times [2021-01-06 16:02:42,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:42,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526657635] [2021-01-06 16:02:42,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 0 proven. 1809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:42,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526657635] [2021-01-06 16:02:42,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311655507] [2021-01-06 16:02:42,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:43,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-01-06 16:02:43,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:43,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-06 16:02:43,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:43,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 0 proven. 1809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:43,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:43,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-01-06 16:02:43,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569043286] [2021-01-06 16:02:43,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-01-06 16:02:43,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:43,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-01-06 16:02:43,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-01-06 16:02:43,700 INFO L87 Difference]: Start difference. First operand 182 states and 183 transitions. Second operand 40 states. [2021-01-06 16:02:43,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:43,937 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2021-01-06 16:02:43,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-06 16:02:43,937 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 180 [2021-01-06 16:02:43,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:43,939 INFO L225 Difference]: With dead ends: 197 [2021-01-06 16:02:43,939 INFO L226 Difference]: Without dead ends: 190 [2021-01-06 16:02:43,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-01-06 16:02:43,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-01-06 16:02:43,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 187. [2021-01-06 16:02:43,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2021-01-06 16:02:43,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2021-01-06 16:02:43,952 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 180 [2021-01-06 16:02:43,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:43,952 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2021-01-06 16:02:43,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2021-01-06 16:02:43,953 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2021-01-06 16:02:43,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-01-06 16:02:43,953 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:43,954 INFO L422 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:44,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:44,169 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:44,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:44,170 INFO L82 PathProgramCache]: Analyzing trace with hash -839646334, now seen corresponding path program 28 times [2021-01-06 16:02:44,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:44,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055837019] [2021-01-06 16:02:44,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:45,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1946 backedges. 0 proven. 1946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:45,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055837019] [2021-01-06 16:02:45,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566963071] [2021-01-06 16:02:45,188 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:45,611 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 16:02:45,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:45,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 1654 conjuncts, 39 conjunts are in the unsatisfiable core [2021-01-06 16:02:45,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:45,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1946 backedges. 0 proven. 1946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:45,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:45,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-01-06 16:02:45,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429692341] [2021-01-06 16:02:45,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-01-06 16:02:45,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:45,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-01-06 16:02:45,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-01-06 16:02:45,826 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 41 states. [2021-01-06 16:02:46,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:46,036 INFO L93 Difference]: Finished difference Result 202 states and 204 transitions. [2021-01-06 16:02:46,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-01-06 16:02:46,041 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 185 [2021-01-06 16:02:46,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:46,043 INFO L225 Difference]: With dead ends: 202 [2021-01-06 16:02:46,043 INFO L226 Difference]: Without dead ends: 195 [2021-01-06 16:02:46,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-01-06 16:02:46,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-01-06 16:02:46,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 192. [2021-01-06 16:02:46,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2021-01-06 16:02:46,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2021-01-06 16:02:46,061 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 185 [2021-01-06 16:02:46,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:46,062 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2021-01-06 16:02:46,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2021-01-06 16:02:46,062 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2021-01-06 16:02:46,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-01-06 16:02:46,063 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:46,063 INFO L422 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:46,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:46,277 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:46,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:46,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1699749373, now seen corresponding path program 29 times [2021-01-06 16:02:46,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:46,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680408495] [2021-01-06 16:02:46,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:47,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2088 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:47,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680408495] [2021-01-06 16:02:47,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122403714] [2021-01-06 16:02:47,377 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:47,856 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-01-06 16:02:47,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:47,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 1696 conjuncts, 40 conjunts are in the unsatisfiable core [2021-01-06 16:02:47,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:48,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2088 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:48,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:48,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-01-06 16:02:48,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337478746] [2021-01-06 16:02:48,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-01-06 16:02:48,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:48,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-01-06 16:02:48,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-01-06 16:02:48,098 INFO L87 Difference]: Start difference. First operand 192 states and 193 transitions. Second operand 42 states. [2021-01-06 16:02:48,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:48,330 INFO L93 Difference]: Finished difference Result 207 states and 209 transitions. [2021-01-06 16:02:48,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-01-06 16:02:48,330 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 190 [2021-01-06 16:02:48,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:48,332 INFO L225 Difference]: With dead ends: 207 [2021-01-06 16:02:48,332 INFO L226 Difference]: Without dead ends: 200 [2021-01-06 16:02:48,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-01-06 16:02:48,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-01-06 16:02:48,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 197. [2021-01-06 16:02:48,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2021-01-06 16:02:48,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 198 transitions. [2021-01-06 16:02:48,351 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 198 transitions. Word has length 190 [2021-01-06 16:02:48,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:48,352 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 198 transitions. [2021-01-06 16:02:48,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2021-01-06 16:02:48,352 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 198 transitions. [2021-01-06 16:02:48,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-01-06 16:02:48,353 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:48,353 INFO L422 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:48,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-01-06 16:02:48,568 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:48,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:48,569 INFO L82 PathProgramCache]: Analyzing trace with hash 928536674, now seen corresponding path program 30 times [2021-01-06 16:02:48,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:48,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536612982] [2021-01-06 16:02:48,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:49,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:49,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536612982] [2021-01-06 16:02:49,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041300334] [2021-01-06 16:02:49,666 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:50,161 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-01-06 16:02:50,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:50,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 41 conjunts are in the unsatisfiable core [2021-01-06 16:02:50,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:50,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:50,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:50,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-01-06 16:02:50,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597705625] [2021-01-06 16:02:50,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-01-06 16:02:50,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:50,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-01-06 16:02:50,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-01-06 16:02:50,433 INFO L87 Difference]: Start difference. First operand 197 states and 198 transitions. Second operand 43 states. [2021-01-06 16:02:50,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:50,670 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2021-01-06 16:02:50,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-01-06 16:02:50,671 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 195 [2021-01-06 16:02:50,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:50,672 INFO L225 Difference]: With dead ends: 212 [2021-01-06 16:02:50,672 INFO L226 Difference]: Without dead ends: 205 [2021-01-06 16:02:50,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-01-06 16:02:50,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-01-06 16:02:50,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 202. [2021-01-06 16:02:50,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2021-01-06 16:02:50,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 203 transitions. [2021-01-06 16:02:50,687 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 203 transitions. Word has length 195 [2021-01-06 16:02:50,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:50,688 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 203 transitions. [2021-01-06 16:02:50,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2021-01-06 16:02:50,688 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 203 transitions. [2021-01-06 16:02:50,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-01-06 16:02:50,689 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:50,690 INFO L422 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:50,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:50,905 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:50,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:50,906 INFO L82 PathProgramCache]: Analyzing trace with hash 264099101, now seen corresponding path program 31 times [2021-01-06 16:02:50,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:50,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563334713] [2021-01-06 16:02:50,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2387 backedges. 0 proven. 2387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:52,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563334713] [2021-01-06 16:02:52,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849433520] [2021-01-06 16:02:52,016 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:52,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 42 conjunts are in the unsatisfiable core [2021-01-06 16:02:52,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:52,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2387 backedges. 0 proven. 2387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:52,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:52,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 44 [2021-01-06 16:02:52,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763314974] [2021-01-06 16:02:52,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-01-06 16:02:52,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:52,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-01-06 16:02:52,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-01-06 16:02:52,709 INFO L87 Difference]: Start difference. First operand 202 states and 203 transitions. Second operand 44 states. [2021-01-06 16:02:52,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:52,968 INFO L93 Difference]: Finished difference Result 217 states and 219 transitions. [2021-01-06 16:02:52,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-01-06 16:02:52,968 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 200 [2021-01-06 16:02:52,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:52,970 INFO L225 Difference]: With dead ends: 217 [2021-01-06 16:02:52,970 INFO L226 Difference]: Without dead ends: 210 [2021-01-06 16:02:52,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-01-06 16:02:52,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-01-06 16:02:52,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 207. [2021-01-06 16:02:52,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2021-01-06 16:02:52,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2021-01-06 16:02:52,987 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 200 [2021-01-06 16:02:52,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:52,987 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2021-01-06 16:02:52,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2021-01-06 16:02:52,988 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2021-01-06 16:02:52,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-01-06 16:02:52,989 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:52,989 INFO L422 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:53,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-01-06 16:02:53,203 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:53,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:53,204 INFO L82 PathProgramCache]: Analyzing trace with hash -2038426302, now seen corresponding path program 32 times [2021-01-06 16:02:53,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:53,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741163013] [2021-01-06 16:02:53,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:54,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2544 backedges. 0 proven. 2544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:54,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741163013] [2021-01-06 16:02:54,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088410910] [2021-01-06 16:02:54,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:54,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:02:54,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:54,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 1822 conjuncts, 43 conjunts are in the unsatisfiable core [2021-01-06 16:02:54,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:55,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2544 backedges. 0 proven. 2544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:55,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:55,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 45 [2021-01-06 16:02:55,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105148072] [2021-01-06 16:02:55,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-01-06 16:02:55,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:55,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-01-06 16:02:55,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-01-06 16:02:55,085 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand 45 states. [2021-01-06 16:02:55,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:55,316 INFO L93 Difference]: Finished difference Result 222 states and 224 transitions. [2021-01-06 16:02:55,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-01-06 16:02:55,317 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 205 [2021-01-06 16:02:55,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:55,318 INFO L225 Difference]: With dead ends: 222 [2021-01-06 16:02:55,319 INFO L226 Difference]: Without dead ends: 215 [2021-01-06 16:02:55,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-01-06 16:02:55,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-01-06 16:02:55,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 212. [2021-01-06 16:02:55,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2021-01-06 16:02:55,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 213 transitions. [2021-01-06 16:02:55,336 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 213 transitions. Word has length 205 [2021-01-06 16:02:55,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:55,336 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 213 transitions. [2021-01-06 16:02:55,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2021-01-06 16:02:55,337 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 213 transitions. [2021-01-06 16:02:55,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-01-06 16:02:55,338 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:55,338 INFO L422 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:55,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-01-06 16:02:55,550 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:55,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:55,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1850287165, now seen corresponding path program 33 times [2021-01-06 16:02:55,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:55,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308737964] [2021-01-06 16:02:55,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:56,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2706 backedges. 0 proven. 2706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:56,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308737964] [2021-01-06 16:02:56,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29976327] [2021-01-06 16:02:56,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:57,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-01-06 16:02:57,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:57,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 44 conjunts are in the unsatisfiable core [2021-01-06 16:02:57,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:57,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2706 backedges. 0 proven. 2706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:57,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:57,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 46 [2021-01-06 16:02:57,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601969569] [2021-01-06 16:02:57,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-01-06 16:02:57,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:57,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-01-06 16:02:57,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-01-06 16:02:57,710 INFO L87 Difference]: Start difference. First operand 212 states and 213 transitions. Second operand 46 states. [2021-01-06 16:02:57,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:57,976 INFO L93 Difference]: Finished difference Result 227 states and 229 transitions. [2021-01-06 16:02:57,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-01-06 16:02:57,977 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 210 [2021-01-06 16:02:57,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:57,979 INFO L225 Difference]: With dead ends: 227 [2021-01-06 16:02:57,979 INFO L226 Difference]: Without dead ends: 220 [2021-01-06 16:02:57,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-01-06 16:02:57,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-01-06 16:02:57,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 217. [2021-01-06 16:02:57,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2021-01-06 16:02:57,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2021-01-06 16:02:57,997 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 210 [2021-01-06 16:02:57,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:57,997 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2021-01-06 16:02:57,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2021-01-06 16:02:57,998 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2021-01-06 16:02:57,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-01-06 16:02:57,999 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:57,999 INFO L422 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:58,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-01-06 16:02:58,214 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:58,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:58,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1941358046, now seen corresponding path program 34 times [2021-01-06 16:02:58,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:58,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852295177] [2021-01-06 16:02:58,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:59,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2873 backedges. 0 proven. 2873 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:02:59,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852295177] [2021-01-06 16:02:59,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644794632] [2021-01-06 16:02:59,502 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:59,951 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 16:02:59,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:59,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1906 conjuncts, 45 conjunts are in the unsatisfiable core [2021-01-06 16:02:59,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:00,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2873 backedges. 0 proven. 2873 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:00,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:00,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 47 [2021-01-06 16:03:00,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144603595] [2021-01-06 16:03:00,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-01-06 16:03:00,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:00,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-01-06 16:03:00,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-01-06 16:03:00,211 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand 47 states. [2021-01-06 16:03:00,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:00,469 INFO L93 Difference]: Finished difference Result 232 states and 234 transitions. [2021-01-06 16:03:00,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-01-06 16:03:00,470 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 215 [2021-01-06 16:03:00,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:00,471 INFO L225 Difference]: With dead ends: 232 [2021-01-06 16:03:00,471 INFO L226 Difference]: Without dead ends: 225 [2021-01-06 16:03:00,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-01-06 16:03:00,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-01-06 16:03:00,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222. [2021-01-06 16:03:00,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2021-01-06 16:03:00,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 223 transitions. [2021-01-06 16:03:00,489 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 223 transitions. Word has length 215 [2021-01-06 16:03:00,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:00,489 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 223 transitions. [2021-01-06 16:03:00,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2021-01-06 16:03:00,490 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 223 transitions. [2021-01-06 16:03:00,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-01-06 16:03:00,491 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:00,491 INFO L422 BasicCegarLoop]: trace histogram [36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:03:00,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-01-06 16:03:00,705 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:03:00,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:03:00,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1965814947, now seen corresponding path program 35 times [2021-01-06 16:03:00,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:03:00,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537456805] [2021-01-06 16:03:00,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:03:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:02,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 3045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:02,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537456805] [2021-01-06 16:03:02,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791246130] [2021-01-06 16:03:02,144 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:02,692 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-01-06 16:03:02,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:03:02,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 46 conjunts are in the unsatisfiable core [2021-01-06 16:03:02,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:02,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 3045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:02,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:02,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 48 [2021-01-06 16:03:02,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180241248] [2021-01-06 16:03:02,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-01-06 16:03:02,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:02,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-01-06 16:03:02,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-01-06 16:03:02,955 INFO L87 Difference]: Start difference. First operand 222 states and 223 transitions. Second operand 48 states. [2021-01-06 16:03:03,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:03,244 INFO L93 Difference]: Finished difference Result 237 states and 239 transitions. [2021-01-06 16:03:03,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-01-06 16:03:03,244 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 220 [2021-01-06 16:03:03,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:03,246 INFO L225 Difference]: With dead ends: 237 [2021-01-06 16:03:03,246 INFO L226 Difference]: Without dead ends: 230 [2021-01-06 16:03:03,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-01-06 16:03:03,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-01-06 16:03:03,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 227. [2021-01-06 16:03:03,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2021-01-06 16:03:03,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2021-01-06 16:03:03,268 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 220 [2021-01-06 16:03:03,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:03,268 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 228 transitions. [2021-01-06 16:03:03,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2021-01-06 16:03:03,269 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 228 transitions. [2021-01-06 16:03:03,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-01-06 16:03:03,270 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:03,270 INFO L422 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:03:03,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-01-06 16:03:03,475 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:03:03,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:03:03,476 INFO L82 PathProgramCache]: Analyzing trace with hash 470927106, now seen corresponding path program 36 times [2021-01-06 16:03:03,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:03:03,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417915618] [2021-01-06 16:03:03,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:03:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:04,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3222 backedges. 0 proven. 3222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:04,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417915618] [2021-01-06 16:03:04,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617875064] [2021-01-06 16:03:04,937 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:05,517 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-01-06 16:03:05,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:03:05,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 1990 conjuncts, 47 conjunts are in the unsatisfiable core [2021-01-06 16:03:05,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:05,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3222 backedges. 0 proven. 3222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:05,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:05,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 49 [2021-01-06 16:03:05,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346303778] [2021-01-06 16:03:05,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-01-06 16:03:05,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:05,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-01-06 16:03:05,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-01-06 16:03:05,793 INFO L87 Difference]: Start difference. First operand 227 states and 228 transitions. Second operand 49 states. [2021-01-06 16:03:06,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:06,088 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2021-01-06 16:03:06,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-01-06 16:03:06,088 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 225 [2021-01-06 16:03:06,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:06,090 INFO L225 Difference]: With dead ends: 242 [2021-01-06 16:03:06,090 INFO L226 Difference]: Without dead ends: 235 [2021-01-06 16:03:06,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-01-06 16:03:06,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-01-06 16:03:06,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 232. [2021-01-06 16:03:06,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2021-01-06 16:03:06,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2021-01-06 16:03:06,110 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 225 [2021-01-06 16:03:06,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:06,111 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2021-01-06 16:03:06,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2021-01-06 16:03:06,111 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2021-01-06 16:03:06,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-01-06 16:03:06,112 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:06,112 INFO L422 BasicCegarLoop]: trace histogram [38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:03:06,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-01-06 16:03:06,326 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:03:06,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:03:06,327 INFO L82 PathProgramCache]: Analyzing trace with hash -54490499, now seen corresponding path program 37 times [2021-01-06 16:03:06,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:03:06,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160397106] [2021-01-06 16:03:06,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:03:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:07,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:07,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160397106] [2021-01-06 16:03:07,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110091544] [2021-01-06 16:03:07,894 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:08,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 2032 conjuncts, 48 conjunts are in the unsatisfiable core [2021-01-06 16:03:08,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:08,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:08,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:08,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 50 [2021-01-06 16:03:08,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485698531] [2021-01-06 16:03:08,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-01-06 16:03:08,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:08,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-01-06 16:03:08,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-01-06 16:03:08,652 INFO L87 Difference]: Start difference. First operand 232 states and 233 transitions. Second operand 50 states. [2021-01-06 16:03:08,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:08,940 INFO L93 Difference]: Finished difference Result 247 states and 249 transitions. [2021-01-06 16:03:08,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-01-06 16:03:08,940 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 230 [2021-01-06 16:03:08,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:08,942 INFO L225 Difference]: With dead ends: 247 [2021-01-06 16:03:08,942 INFO L226 Difference]: Without dead ends: 240 [2021-01-06 16:03:08,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-01-06 16:03:08,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-01-06 16:03:08,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 237. [2021-01-06 16:03:08,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2021-01-06 16:03:08,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 238 transitions. [2021-01-06 16:03:08,963 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 238 transitions. Word has length 230 [2021-01-06 16:03:08,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:08,964 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 238 transitions. [2021-01-06 16:03:08,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2021-01-06 16:03:08,964 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 238 transitions. [2021-01-06 16:03:08,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-01-06 16:03:08,965 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:08,966 INFO L422 BasicCegarLoop]: trace histogram [39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:03:09,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-01-06 16:03:09,181 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:03:09,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:03:09,182 INFO L82 PathProgramCache]: Analyzing trace with hash -340280350, now seen corresponding path program 38 times [2021-01-06 16:03:09,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:03:09,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962035502] [2021-01-06 16:03:09,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:03:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:10,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:10,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962035502] [2021-01-06 16:03:10,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797754953] [2021-01-06 16:03:10,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:11,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:03:11,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:03:11,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 2074 conjuncts, 49 conjunts are in the unsatisfiable core [2021-01-06 16:03:11,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:11,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:11,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:11,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 51 [2021-01-06 16:03:11,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190975555] [2021-01-06 16:03:11,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-01-06 16:03:11,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:11,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-01-06 16:03:11,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-01-06 16:03:11,586 INFO L87 Difference]: Start difference. First operand 237 states and 238 transitions. Second operand 51 states. [2021-01-06 16:03:11,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:11,897 INFO L93 Difference]: Finished difference Result 252 states and 254 transitions. [2021-01-06 16:03:11,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-01-06 16:03:11,898 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 235 [2021-01-06 16:03:11,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:11,901 INFO L225 Difference]: With dead ends: 252 [2021-01-06 16:03:11,901 INFO L226 Difference]: Without dead ends: 245 [2021-01-06 16:03:11,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-01-06 16:03:11,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-01-06 16:03:11,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 242. [2021-01-06 16:03:11,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2021-01-06 16:03:11,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 243 transitions. [2021-01-06 16:03:11,930 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 243 transitions. Word has length 235 [2021-01-06 16:03:11,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:11,931 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 243 transitions. [2021-01-06 16:03:11,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2021-01-06 16:03:11,931 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 243 transitions. [2021-01-06 16:03:11,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-01-06 16:03:11,933 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:11,933 INFO L422 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:03:12,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:12,147 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:03:12,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:03:12,148 INFO L82 PathProgramCache]: Analyzing trace with hash 149987741, now seen corresponding path program 39 times [2021-01-06 16:03:12,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:03:12,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861560137] [2021-01-06 16:03:12,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:03:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:13,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3783 backedges. 0 proven. 3783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:13,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861560137] [2021-01-06 16:03:13,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735902841] [2021-01-06 16:03:13,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:14,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-01-06 16:03:14,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:03:14,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 2116 conjuncts, 50 conjunts are in the unsatisfiable core [2021-01-06 16:03:14,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3783 backedges. 0 proven. 3783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:14,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:14,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 52 [2021-01-06 16:03:14,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067993638] [2021-01-06 16:03:14,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-01-06 16:03:14,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:14,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-01-06 16:03:14,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-01-06 16:03:14,710 INFO L87 Difference]: Start difference. First operand 242 states and 243 transitions. Second operand 52 states. [2021-01-06 16:03:14,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:14,995 INFO L93 Difference]: Finished difference Result 257 states and 259 transitions. [2021-01-06 16:03:14,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-01-06 16:03:14,996 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 240 [2021-01-06 16:03:14,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:14,997 INFO L225 Difference]: With dead ends: 257 [2021-01-06 16:03:14,997 INFO L226 Difference]: Without dead ends: 250 [2021-01-06 16:03:14,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-01-06 16:03:14,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-01-06 16:03:15,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 247. [2021-01-06 16:03:15,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2021-01-06 16:03:15,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2021-01-06 16:03:15,021 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 240 [2021-01-06 16:03:15,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:15,022 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2021-01-06 16:03:15,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2021-01-06 16:03:15,022 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2021-01-06 16:03:15,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-01-06 16:03:15,023 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:15,023 INFO L422 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:03:15,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:15,237 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:03:15,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:03:15,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1939413186, now seen corresponding path program 40 times [2021-01-06 16:03:15,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:03:15,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290686252] [2021-01-06 16:03:15,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:03:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 0 proven. 3980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:17,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290686252] [2021-01-06 16:03:17,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913506568] [2021-01-06 16:03:17,019 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:17,526 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 16:03:17,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:03:17,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 2158 conjuncts, 51 conjunts are in the unsatisfiable core [2021-01-06 16:03:17,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:17,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 0 proven. 3980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:17,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:17,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 53 [2021-01-06 16:03:17,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21929449] [2021-01-06 16:03:17,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-01-06 16:03:17,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:17,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-01-06 16:03:17,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-01-06 16:03:17,820 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand 53 states. [2021-01-06 16:03:18,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:18,121 INFO L93 Difference]: Finished difference Result 262 states and 264 transitions. [2021-01-06 16:03:18,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-01-06 16:03:18,122 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 245 [2021-01-06 16:03:18,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:18,123 INFO L225 Difference]: With dead ends: 262 [2021-01-06 16:03:18,123 INFO L226 Difference]: Without dead ends: 255 [2021-01-06 16:03:18,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-01-06 16:03:18,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-01-06 16:03:18,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 252. [2021-01-06 16:03:18,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2021-01-06 16:03:18,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 253 transitions. [2021-01-06 16:03:18,147 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 253 transitions. Word has length 245 [2021-01-06 16:03:18,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:18,150 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 253 transitions. [2021-01-06 16:03:18,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2021-01-06 16:03:18,153 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 253 transitions. [2021-01-06 16:03:18,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-01-06 16:03:18,154 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:18,155 INFO L422 BasicCegarLoop]: trace histogram [42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:03:18,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:18,369 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:03:18,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:03:18,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1043967811, now seen corresponding path program 41 times [2021-01-06 16:03:18,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:03:18,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507933635] [2021-01-06 16:03:18,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:03:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:20,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4182 backedges. 0 proven. 4182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:20,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507933635] [2021-01-06 16:03:20,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145164945] [2021-01-06 16:03:20,204 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:20,790 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-01-06 16:03:20,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:03:20,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 2200 conjuncts, 52 conjunts are in the unsatisfiable core [2021-01-06 16:03:20,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:21,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4182 backedges. 0 proven. 4182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:21,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:21,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 54 [2021-01-06 16:03:21,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391373066] [2021-01-06 16:03:21,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-01-06 16:03:21,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:21,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-01-06 16:03:21,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-01-06 16:03:21,091 INFO L87 Difference]: Start difference. First operand 252 states and 253 transitions. Second operand 54 states. [2021-01-06 16:03:21,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:21,410 INFO L93 Difference]: Finished difference Result 267 states and 269 transitions. [2021-01-06 16:03:21,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-01-06 16:03:21,410 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 250 [2021-01-06 16:03:21,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:21,411 INFO L225 Difference]: With dead ends: 267 [2021-01-06 16:03:21,412 INFO L226 Difference]: Without dead ends: 260 [2021-01-06 16:03:21,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-01-06 16:03:21,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-01-06 16:03:21,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 257. [2021-01-06 16:03:21,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2021-01-06 16:03:21,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 258 transitions. [2021-01-06 16:03:21,434 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 258 transitions. Word has length 250 [2021-01-06 16:03:21,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:21,434 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 258 transitions. [2021-01-06 16:03:21,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2021-01-06 16:03:21,434 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 258 transitions. [2021-01-06 16:03:21,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-01-06 16:03:21,436 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:21,436 INFO L422 BasicCegarLoop]: trace histogram [43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:03:21,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-01-06 16:03:21,652 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:03:21,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:03:21,653 INFO L82 PathProgramCache]: Analyzing trace with hash -829170270, now seen corresponding path program 42 times [2021-01-06 16:03:21,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:03:21,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493837814] [2021-01-06 16:03:21,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:03:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:23,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 0 proven. 4389 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:23,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493837814] [2021-01-06 16:03:23,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310961342] [2021-01-06 16:03:23,554 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:24,226 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-01-06 16:03:24,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:03:24,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 2242 conjuncts, 53 conjunts are in the unsatisfiable core [2021-01-06 16:03:24,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:24,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 0 proven. 4389 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:24,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:24,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 55 [2021-01-06 16:03:24,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283036740] [2021-01-06 16:03:24,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-01-06 16:03:24,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:24,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-01-06 16:03:24,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-01-06 16:03:24,541 INFO L87 Difference]: Start difference. First operand 257 states and 258 transitions. Second operand 55 states. [2021-01-06 16:03:24,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:24,828 INFO L93 Difference]: Finished difference Result 272 states and 274 transitions. [2021-01-06 16:03:24,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-01-06 16:03:24,829 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 255 [2021-01-06 16:03:24,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:24,831 INFO L225 Difference]: With dead ends: 272 [2021-01-06 16:03:24,831 INFO L226 Difference]: Without dead ends: 265 [2021-01-06 16:03:24,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-01-06 16:03:24,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-01-06 16:03:24,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 262. [2021-01-06 16:03:24,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2021-01-06 16:03:24,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 263 transitions. [2021-01-06 16:03:24,856 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 263 transitions. Word has length 255 [2021-01-06 16:03:24,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:24,857 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 263 transitions. [2021-01-06 16:03:24,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2021-01-06 16:03:24,857 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 263 transitions. [2021-01-06 16:03:24,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-01-06 16:03:24,859 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:24,859 INFO L422 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:03:25,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:25,074 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:03:25,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:03:25,075 INFO L82 PathProgramCache]: Analyzing trace with hash 656644061, now seen corresponding path program 43 times [2021-01-06 16:03:25,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:03:25,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249723237] [2021-01-06 16:03:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:03:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:26,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4601 backedges. 0 proven. 4601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:26,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249723237] [2021-01-06 16:03:26,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230227062] [2021-01-06 16:03:26,997 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:27,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 2284 conjuncts, 54 conjunts are in the unsatisfiable core [2021-01-06 16:03:27,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:27,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4601 backedges. 0 proven. 4601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:27,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:27,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 56 [2021-01-06 16:03:27,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238890461] [2021-01-06 16:03:27,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-01-06 16:03:27,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:27,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-01-06 16:03:27,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-01-06 16:03:27,873 INFO L87 Difference]: Start difference. First operand 262 states and 263 transitions. Second operand 56 states. [2021-01-06 16:03:28,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:28,199 INFO L93 Difference]: Finished difference Result 277 states and 279 transitions. [2021-01-06 16:03:28,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-01-06 16:03:28,199 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 260 [2021-01-06 16:03:28,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:28,201 INFO L225 Difference]: With dead ends: 277 [2021-01-06 16:03:28,201 INFO L226 Difference]: Without dead ends: 270 [2021-01-06 16:03:28,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-01-06 16:03:28,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-01-06 16:03:28,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 267. [2021-01-06 16:03:28,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2021-01-06 16:03:28,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2021-01-06 16:03:28,228 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 260 [2021-01-06 16:03:28,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:28,229 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2021-01-06 16:03:28,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2021-01-06 16:03:28,229 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2021-01-06 16:03:28,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-01-06 16:03:28,230 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:28,231 INFO L422 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:03:28,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:28,444 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:03:28,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:03:28,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1710880126, now seen corresponding path program 44 times [2021-01-06 16:03:28,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:03:28,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92078286] [2021-01-06 16:03:28,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:03:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:30,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 0 proven. 4818 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:30,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92078286] [2021-01-06 16:03:30,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217404897] [2021-01-06 16:03:30,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:31,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:03:31,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:03:31,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 2326 conjuncts, 55 conjunts are in the unsatisfiable core [2021-01-06 16:03:31,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:31,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 0 proven. 4818 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:31,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:31,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 57 [2021-01-06 16:03:31,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626642514] [2021-01-06 16:03:31,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-01-06 16:03:31,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:31,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-01-06 16:03:31,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-01-06 16:03:31,326 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand 57 states. [2021-01-06 16:03:31,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:31,696 INFO L93 Difference]: Finished difference Result 282 states and 284 transitions. [2021-01-06 16:03:31,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-01-06 16:03:31,696 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 265 [2021-01-06 16:03:31,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:31,697 INFO L225 Difference]: With dead ends: 282 [2021-01-06 16:03:31,697 INFO L226 Difference]: Without dead ends: 275 [2021-01-06 16:03:31,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-01-06 16:03:31,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-01-06 16:03:31,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 272. [2021-01-06 16:03:31,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2021-01-06 16:03:31,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 273 transitions. [2021-01-06 16:03:31,726 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 273 transitions. Word has length 265 [2021-01-06 16:03:31,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:31,726 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 273 transitions. [2021-01-06 16:03:31,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2021-01-06 16:03:31,726 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 273 transitions. [2021-01-06 16:03:31,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-01-06 16:03:31,728 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:31,728 INFO L422 BasicCegarLoop]: trace histogram [46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:03:31,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-01-06 16:03:31,943 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:03:31,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:03:31,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1181382397, now seen corresponding path program 45 times [2021-01-06 16:03:31,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:03:31,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373392664] [2021-01-06 16:03:31,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:03:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:34,018 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 5040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:34,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373392664] [2021-01-06 16:03:34,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156305070] [2021-01-06 16:03:34,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:34,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-01-06 16:03:34,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:03:34,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 2368 conjuncts, 56 conjunts are in the unsatisfiable core [2021-01-06 16:03:34,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:35,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 5040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:35,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:35,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 58 [2021-01-06 16:03:35,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371139533] [2021-01-06 16:03:35,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-01-06 16:03:35,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:35,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-01-06 16:03:35,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-01-06 16:03:35,095 INFO L87 Difference]: Start difference. First operand 272 states and 273 transitions. Second operand 58 states. [2021-01-06 16:03:35,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:35,435 INFO L93 Difference]: Finished difference Result 287 states and 289 transitions. [2021-01-06 16:03:35,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-01-06 16:03:35,436 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 270 [2021-01-06 16:03:35,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:35,437 INFO L225 Difference]: With dead ends: 287 [2021-01-06 16:03:35,437 INFO L226 Difference]: Without dead ends: 280 [2021-01-06 16:03:35,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-01-06 16:03:35,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-01-06 16:03:35,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 277. [2021-01-06 16:03:35,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2021-01-06 16:03:35,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 278 transitions. [2021-01-06 16:03:35,456 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 278 transitions. Word has length 270 [2021-01-06 16:03:35,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:35,456 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 278 transitions. [2021-01-06 16:03:35,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2021-01-06 16:03:35,457 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 278 transitions. [2021-01-06 16:03:35,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-01-06 16:03:35,458 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:35,458 INFO L422 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:03:35,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-01-06 16:03:35,667 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:03:35,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:03:35,667 INFO L82 PathProgramCache]: Analyzing trace with hash -707944606, now seen corresponding path program 46 times [2021-01-06 16:03:35,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:03:35,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233308627] [2021-01-06 16:03:35,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:03:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:37,854 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:37,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233308627] [2021-01-06 16:03:37,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910072977] [2021-01-06 16:03:37,855 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:38,414 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 16:03:38,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:03:38,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 2410 conjuncts, 57 conjunts are in the unsatisfiable core [2021-01-06 16:03:38,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:38,787 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:38,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:38,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 59 [2021-01-06 16:03:38,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120287224] [2021-01-06 16:03:38,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-01-06 16:03:38,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:38,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-01-06 16:03:38,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-01-06 16:03:38,789 INFO L87 Difference]: Start difference. First operand 277 states and 278 transitions. Second operand 59 states. [2021-01-06 16:03:39,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:39,143 INFO L93 Difference]: Finished difference Result 292 states and 294 transitions. [2021-01-06 16:03:39,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-01-06 16:03:39,144 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 275 [2021-01-06 16:03:39,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:39,146 INFO L225 Difference]: With dead ends: 292 [2021-01-06 16:03:39,146 INFO L226 Difference]: Without dead ends: 285 [2021-01-06 16:03:39,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-01-06 16:03:39,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-01-06 16:03:39,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 282. [2021-01-06 16:03:39,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2021-01-06 16:03:39,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 283 transitions. [2021-01-06 16:03:39,170 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 283 transitions. Word has length 275 [2021-01-06 16:03:39,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:39,170 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 283 transitions. [2021-01-06 16:03:39,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2021-01-06 16:03:39,170 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 283 transitions. [2021-01-06 16:03:39,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-01-06 16:03:39,171 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:39,172 INFO L422 BasicCegarLoop]: trace histogram [48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:03:39,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-01-06 16:03:39,388 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:03:39,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:03:39,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1518136861, now seen corresponding path program 47 times [2021-01-06 16:03:39,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:03:39,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935717045] [2021-01-06 16:03:39,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:03:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:41,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5499 backedges. 0 proven. 5499 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:41,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935717045] [2021-01-06 16:03:41,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189016028] [2021-01-06 16:03:41,614 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:42,310 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-01-06 16:03:42,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:03:42,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 2452 conjuncts, 58 conjunts are in the unsatisfiable core [2021-01-06 16:03:42,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:42,660 INFO L134 CoverageAnalysis]: Checked inductivity of 5499 backedges. 0 proven. 5499 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:42,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:42,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 60 [2021-01-06 16:03:42,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215521819] [2021-01-06 16:03:42,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-01-06 16:03:42,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:42,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-01-06 16:03:42,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-01-06 16:03:42,663 INFO L87 Difference]: Start difference. First operand 282 states and 283 transitions. Second operand 60 states. [2021-01-06 16:03:43,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:43,007 INFO L93 Difference]: Finished difference Result 297 states and 299 transitions. [2021-01-06 16:03:43,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-01-06 16:03:43,007 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 280 [2021-01-06 16:03:43,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:43,009 INFO L225 Difference]: With dead ends: 297 [2021-01-06 16:03:43,009 INFO L226 Difference]: Without dead ends: 290 [2021-01-06 16:03:43,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-01-06 16:03:43,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-01-06 16:03:43,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 287. [2021-01-06 16:03:43,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-01-06 16:03:43,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2021-01-06 16:03:43,041 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 280 [2021-01-06 16:03:43,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:43,041 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2021-01-06 16:03:43,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2021-01-06 16:03:43,041 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2021-01-06 16:03:43,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-01-06 16:03:43,043 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:43,043 INFO L422 BasicCegarLoop]: trace histogram [49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:03:43,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:43,258 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:03:43,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:03:43,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1001874366, now seen corresponding path program 48 times [2021-01-06 16:03:43,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:03:43,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077925964] [2021-01-06 16:03:43,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:03:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:45,660 INFO L134 CoverageAnalysis]: Checked inductivity of 5736 backedges. 0 proven. 5736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:45,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077925964] [2021-01-06 16:03:45,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997461391] [2021-01-06 16:03:45,660 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:46,486 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-01-06 16:03:46,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:03:46,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 2494 conjuncts, 59 conjunts are in the unsatisfiable core [2021-01-06 16:03:46,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:46,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5736 backedges. 0 proven. 5736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:46,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:46,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 61 [2021-01-06 16:03:46,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429079575] [2021-01-06 16:03:46,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-01-06 16:03:46,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:46,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-01-06 16:03:46,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-01-06 16:03:46,846 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand 61 states. [2021-01-06 16:03:47,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:47,221 INFO L93 Difference]: Finished difference Result 302 states and 304 transitions. [2021-01-06 16:03:47,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-01-06 16:03:47,221 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 285 [2021-01-06 16:03:47,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:47,223 INFO L225 Difference]: With dead ends: 302 [2021-01-06 16:03:47,223 INFO L226 Difference]: Without dead ends: 295 [2021-01-06 16:03:47,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-01-06 16:03:47,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-01-06 16:03:47,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 292. [2021-01-06 16:03:47,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2021-01-06 16:03:47,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 293 transitions. [2021-01-06 16:03:47,251 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 293 transitions. Word has length 285 [2021-01-06 16:03:47,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:47,252 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 293 transitions. [2021-01-06 16:03:47,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2021-01-06 16:03:47,252 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 293 transitions. [2021-01-06 16:03:47,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2021-01-06 16:03:47,254 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:47,254 INFO L422 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:03:47,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:47,462 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:03:47,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:03:47,463 INFO L82 PathProgramCache]: Analyzing trace with hash -339935939, now seen corresponding path program 49 times [2021-01-06 16:03:47,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:03:47,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736475526] [2021-01-06 16:03:47,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:03:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:49,926 INFO L134 CoverageAnalysis]: Checked inductivity of 5978 backedges. 0 proven. 5978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:49,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736475526] [2021-01-06 16:03:49,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962497393] [2021-01-06 16:03:49,927 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:50,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 2536 conjuncts, 60 conjunts are in the unsatisfiable core [2021-01-06 16:03:50,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:50,868 INFO L134 CoverageAnalysis]: Checked inductivity of 5978 backedges. 0 proven. 5978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:50,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:50,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 62 [2021-01-06 16:03:50,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208855491] [2021-01-06 16:03:50,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-01-06 16:03:50,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:50,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-01-06 16:03:50,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-01-06 16:03:50,870 INFO L87 Difference]: Start difference. First operand 292 states and 293 transitions. Second operand 62 states. [2021-01-06 16:03:51,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:51,251 INFO L93 Difference]: Finished difference Result 307 states and 309 transitions. [2021-01-06 16:03:51,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-01-06 16:03:51,252 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 290 [2021-01-06 16:03:51,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:51,253 INFO L225 Difference]: With dead ends: 307 [2021-01-06 16:03:51,254 INFO L226 Difference]: Without dead ends: 300 [2021-01-06 16:03:51,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-01-06 16:03:51,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-01-06 16:03:51,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 297. [2021-01-06 16:03:51,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2021-01-06 16:03:51,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 298 transitions. [2021-01-06 16:03:51,276 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 298 transitions. Word has length 290 [2021-01-06 16:03:51,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:51,277 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 298 transitions. [2021-01-06 16:03:51,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2021-01-06 16:03:51,277 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 298 transitions. [2021-01-06 16:03:51,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2021-01-06 16:03:51,278 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:51,279 INFO L422 BasicCegarLoop]: trace histogram [51, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:03:51,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:51,492 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:03:51,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:03:51,493 INFO L82 PathProgramCache]: Analyzing trace with hash -900398814, now seen corresponding path program 50 times [2021-01-06 16:03:51,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:03:51,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628231462] [2021-01-06 16:03:51,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:03:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:53,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6225 backedges. 0 proven. 6225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:53,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628231462] [2021-01-06 16:03:53,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998862464] [2021-01-06 16:03:53,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:54,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:03:54,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:03:54,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 2578 conjuncts, 61 conjunts are in the unsatisfiable core [2021-01-06 16:03:54,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:54,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6225 backedges. 0 proven. 6225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:54,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:54,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 63 [2021-01-06 16:03:54,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140384669] [2021-01-06 16:03:54,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-01-06 16:03:54,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:54,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-01-06 16:03:54,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-01-06 16:03:54,896 INFO L87 Difference]: Start difference. First operand 297 states and 298 transitions. Second operand 63 states. [2021-01-06 16:03:55,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:55,305 INFO L93 Difference]: Finished difference Result 312 states and 314 transitions. [2021-01-06 16:03:55,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-01-06 16:03:55,305 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 295 [2021-01-06 16:03:55,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:55,307 INFO L225 Difference]: With dead ends: 312 [2021-01-06 16:03:55,307 INFO L226 Difference]: Without dead ends: 305 [2021-01-06 16:03:55,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-01-06 16:03:55,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-01-06 16:03:55,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 302. [2021-01-06 16:03:55,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2021-01-06 16:03:55,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 303 transitions. [2021-01-06 16:03:55,336 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 303 transitions. Word has length 295 [2021-01-06 16:03:55,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:55,336 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 303 transitions. [2021-01-06 16:03:55,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2021-01-06 16:03:55,336 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 303 transitions. [2021-01-06 16:03:55,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-01-06 16:03:55,338 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:55,338 INFO L422 BasicCegarLoop]: trace histogram [52, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:03:55,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:55,554 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:03:55,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:03:55,555 INFO L82 PathProgramCache]: Analyzing trace with hash -267606947, now seen corresponding path program 51 times [2021-01-06 16:03:55,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:03:55,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348025269] [2021-01-06 16:03:55,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:03:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:58,136 INFO L134 CoverageAnalysis]: Checked inductivity of 6477 backedges. 0 proven. 6477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:58,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348025269] [2021-01-06 16:03:58,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680345474] [2021-01-06 16:03:58,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:58,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2021-01-06 16:03:58,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:03:58,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 2620 conjuncts, 62 conjunts are in the unsatisfiable core [2021-01-06 16:03:58,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:59,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6477 backedges. 0 proven. 6477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:03:59,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:59,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 64 [2021-01-06 16:03:59,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447897326] [2021-01-06 16:03:59,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-01-06 16:03:59,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:59,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-01-06 16:03:59,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-01-06 16:03:59,354 INFO L87 Difference]: Start difference. First operand 302 states and 303 transitions. Second operand 64 states. [2021-01-06 16:03:59,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:59,770 INFO L93 Difference]: Finished difference Result 317 states and 319 transitions. [2021-01-06 16:03:59,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-01-06 16:03:59,770 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 300 [2021-01-06 16:03:59,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:59,772 INFO L225 Difference]: With dead ends: 317 [2021-01-06 16:03:59,772 INFO L226 Difference]: Without dead ends: 310 [2021-01-06 16:03:59,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-01-06 16:03:59,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-01-06 16:03:59,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 307. [2021-01-06 16:03:59,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2021-01-06 16:03:59,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 308 transitions. [2021-01-06 16:03:59,810 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 308 transitions. Word has length 300 [2021-01-06 16:03:59,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:59,810 INFO L481 AbstractCegarLoop]: Abstraction has 307 states and 308 transitions. [2021-01-06 16:03:59,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2021-01-06 16:03:59,811 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 308 transitions. [2021-01-06 16:03:59,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-01-06 16:03:59,812 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:59,812 INFO L422 BasicCegarLoop]: trace histogram [53, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:04:00,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-01-06 16:04:00,027 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:04:00,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:04:00,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1330695682, now seen corresponding path program 52 times [2021-01-06 16:04:00,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:04:00,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607895845] [2021-01-06 16:04:00,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:04:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:04:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6734 backedges. 0 proven. 6734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:04:02,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607895845] [2021-01-06 16:04:02,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441544578] [2021-01-06 16:04:02,716 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:04:03,316 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 16:04:03,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:04:03,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 63 conjunts are in the unsatisfiable core [2021-01-06 16:04:03,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:04:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 6734 backedges. 0 proven. 6734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:04:03,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:04:03,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 65 [2021-01-06 16:04:03,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941556378] [2021-01-06 16:04:03,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-01-06 16:04:03,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:04:03,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-01-06 16:04:03,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-01-06 16:04:03,773 INFO L87 Difference]: Start difference. First operand 307 states and 308 transitions. Second operand 65 states. [2021-01-06 16:04:04,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:04:04,236 INFO L93 Difference]: Finished difference Result 322 states and 324 transitions. [2021-01-06 16:04:04,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-01-06 16:04:04,236 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 305 [2021-01-06 16:04:04,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:04:04,238 INFO L225 Difference]: With dead ends: 322 [2021-01-06 16:04:04,238 INFO L226 Difference]: Without dead ends: 315 [2021-01-06 16:04:04,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-01-06 16:04:04,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-01-06 16:04:04,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 312. [2021-01-06 16:04:04,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2021-01-06 16:04:04,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 313 transitions. [2021-01-06 16:04:04,262 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 313 transitions. Word has length 305 [2021-01-06 16:04:04,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:04:04,262 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 313 transitions. [2021-01-06 16:04:04,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 65 states. [2021-01-06 16:04:04,262 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 313 transitions. [2021-01-06 16:04:04,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-01-06 16:04:04,263 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:04:04,263 INFO L422 BasicCegarLoop]: trace histogram [54, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:04:04,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:04:04,464 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:04:04,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:04:04,465 INFO L82 PathProgramCache]: Analyzing trace with hash -355605635, now seen corresponding path program 53 times [2021-01-06 16:04:04,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:04:04,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126791248] [2021-01-06 16:04:04,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:04:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:04:07,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6996 backedges. 0 proven. 6996 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:04:07,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126791248] [2021-01-06 16:04:07,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411672145] [2021-01-06 16:04:07,176 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:04:07,925 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2021-01-06 16:04:07,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:04:07,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 64 conjunts are in the unsatisfiable core [2021-01-06 16:04:07,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:04:08,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6996 backedges. 0 proven. 6996 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:04:08,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:04:08,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 66 [2021-01-06 16:04:08,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956056935] [2021-01-06 16:04:08,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-01-06 16:04:08,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:04:08,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-01-06 16:04:08,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-01-06 16:04:08,404 INFO L87 Difference]: Start difference. First operand 312 states and 313 transitions. Second operand 66 states. [2021-01-06 16:04:08,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:04:08,792 INFO L93 Difference]: Finished difference Result 327 states and 329 transitions. [2021-01-06 16:04:08,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-01-06 16:04:08,792 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 310 [2021-01-06 16:04:08,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:04:08,794 INFO L225 Difference]: With dead ends: 327 [2021-01-06 16:04:08,794 INFO L226 Difference]: Without dead ends: 320 [2021-01-06 16:04:08,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-01-06 16:04:08,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-01-06 16:04:08,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 317. [2021-01-06 16:04:08,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2021-01-06 16:04:08,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 318 transitions. [2021-01-06 16:04:08,833 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 318 transitions. Word has length 310 [2021-01-06 16:04:08,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:04:08,833 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 318 transitions. [2021-01-06 16:04:08,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2021-01-06 16:04:08,834 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 318 transitions. [2021-01-06 16:04:08,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-01-06 16:04:08,835 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:04:08,835 INFO L422 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:04:09,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-01-06 16:04:09,036 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:04:09,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:04:09,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1659239710, now seen corresponding path program 54 times [2021-01-06 16:04:09,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:04:09,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112178707] [2021-01-06 16:04:09,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:04:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:04:11,895 INFO L134 CoverageAnalysis]: Checked inductivity of 7263 backedges. 0 proven. 7263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:04:11,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112178707] [2021-01-06 16:04:11,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89996591] [2021-01-06 16:04:11,896 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:04:12,764 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-01-06 16:04:12,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:04:12,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 2746 conjuncts, 65 conjunts are in the unsatisfiable core [2021-01-06 16:04:12,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:04:13,173 INFO L134 CoverageAnalysis]: Checked inductivity of 7263 backedges. 0 proven. 7263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:04:13,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:04:13,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 67 [2021-01-06 16:04:13,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858912362] [2021-01-06 16:04:13,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-01-06 16:04:13,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:04:13,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-01-06 16:04:13,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-01-06 16:04:13,176 INFO L87 Difference]: Start difference. First operand 317 states and 318 transitions. Second operand 67 states. [2021-01-06 16:04:13,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:04:13,592 INFO L93 Difference]: Finished difference Result 332 states and 334 transitions. [2021-01-06 16:04:13,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-01-06 16:04:13,593 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 315 [2021-01-06 16:04:13,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:04:13,594 INFO L225 Difference]: With dead ends: 332 [2021-01-06 16:04:13,594 INFO L226 Difference]: Without dead ends: 325 [2021-01-06 16:04:13,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-01-06 16:04:13,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-01-06 16:04:13,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 322. [2021-01-06 16:04:13,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2021-01-06 16:04:13,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 323 transitions. [2021-01-06 16:04:13,635 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 323 transitions. Word has length 315 [2021-01-06 16:04:13,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:04:13,636 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 323 transitions. [2021-01-06 16:04:13,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2021-01-06 16:04:13,636 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 323 transitions. [2021-01-06 16:04:13,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-01-06 16:04:13,638 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:04:13,638 INFO L422 BasicCegarLoop]: trace histogram [56, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:04:13,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-01-06 16:04:13,852 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:04:13,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:04:13,853 INFO L82 PathProgramCache]: Analyzing trace with hash 216185501, now seen corresponding path program 55 times [2021-01-06 16:04:13,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:04:13,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326841125] [2021-01-06 16:04:13,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:04:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:04:16,882 INFO L134 CoverageAnalysis]: Checked inductivity of 7535 backedges. 0 proven. 7535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:04:16,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326841125] [2021-01-06 16:04:16,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878407509] [2021-01-06 16:04:16,883 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:04:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:04:17,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 2788 conjuncts, 66 conjunts are in the unsatisfiable core [2021-01-06 16:04:17,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:04:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 7535 backedges. 0 proven. 7535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:04:17,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:04:17,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 68 [2021-01-06 16:04:17,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558909755] [2021-01-06 16:04:17,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-01-06 16:04:17,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:04:17,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-01-06 16:04:17,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-01-06 16:04:17,950 INFO L87 Difference]: Start difference. First operand 322 states and 323 transitions. Second operand 68 states. [2021-01-06 16:04:18,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:04:18,357 INFO L93 Difference]: Finished difference Result 337 states and 339 transitions. [2021-01-06 16:04:18,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-01-06 16:04:18,358 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 320 [2021-01-06 16:04:18,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:04:18,359 INFO L225 Difference]: With dead ends: 337 [2021-01-06 16:04:18,359 INFO L226 Difference]: Without dead ends: 330 [2021-01-06 16:04:18,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-01-06 16:04:18,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-01-06 16:04:18,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 327. [2021-01-06 16:04:18,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2021-01-06 16:04:18,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2021-01-06 16:04:18,403 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 320 [2021-01-06 16:04:18,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:04:18,403 INFO L481 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2021-01-06 16:04:18,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2021-01-06 16:04:18,403 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2021-01-06 16:04:18,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-01-06 16:04:18,405 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:04:18,405 INFO L422 BasicCegarLoop]: trace histogram [57, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:04:18,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:04:18,619 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:04:18,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:04:18,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1072783422, now seen corresponding path program 56 times [2021-01-06 16:04:18,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:04:18,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083847597] [2021-01-06 16:04:18,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:04:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:04:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:04:21,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083847597] [2021-01-06 16:04:21,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367755788] [2021-01-06 16:04:21,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:04:22,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:04:22,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:04:22,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 2830 conjuncts, 67 conjunts are in the unsatisfiable core [2021-01-06 16:04:22,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:04:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:04:22,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:04:22,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 69 [2021-01-06 16:04:22,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754179787] [2021-01-06 16:04:22,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-01-06 16:04:22,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:04:22,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-01-06 16:04:22,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2021-01-06 16:04:22,751 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand 69 states. [2021-01-06 16:04:23,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:04:23,154 INFO L93 Difference]: Finished difference Result 342 states and 344 transitions. [2021-01-06 16:04:23,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-01-06 16:04:23,155 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 325 [2021-01-06 16:04:23,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:04:23,157 INFO L225 Difference]: With dead ends: 342 [2021-01-06 16:04:23,157 INFO L226 Difference]: Without dead ends: 335 [2021-01-06 16:04:23,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2021-01-06 16:04:23,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-01-06 16:04:23,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 332. [2021-01-06 16:04:23,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2021-01-06 16:04:23,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 333 transitions. [2021-01-06 16:04:23,200 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 333 transitions. Word has length 325 [2021-01-06 16:04:23,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:04:23,200 INFO L481 AbstractCegarLoop]: Abstraction has 332 states and 333 transitions. [2021-01-06 16:04:23,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 69 states. [2021-01-06 16:04:23,200 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 333 transitions. [2021-01-06 16:04:23,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-01-06 16:04:23,202 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:04:23,202 INFO L422 BasicCegarLoop]: trace histogram [58, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:04:23,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-01-06 16:04:23,416 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:04:23,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:04:23,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1420634557, now seen corresponding path program 57 times [2021-01-06 16:04:23,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:04:23,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834447068] [2021-01-06 16:04:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:04:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:04:26,551 INFO L134 CoverageAnalysis]: Checked inductivity of 8094 backedges. 0 proven. 8094 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:04:26,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834447068] [2021-01-06 16:04:26,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432288110] [2021-01-06 16:04:26,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:04:27,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-01-06 16:04:27,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:04:27,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 2872 conjuncts, 68 conjunts are in the unsatisfiable core [2021-01-06 16:04:27,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:04:27,954 INFO L134 CoverageAnalysis]: Checked inductivity of 8094 backedges. 0 proven. 8094 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:04:27,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:04:27,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 70 [2021-01-06 16:04:27,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380804319] [2021-01-06 16:04:27,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-01-06 16:04:27,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:04:27,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-01-06 16:04:27,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-01-06 16:04:27,957 INFO L87 Difference]: Start difference. First operand 332 states and 333 transitions. Second operand 70 states. [2021-01-06 16:04:28,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:04:28,460 INFO L93 Difference]: Finished difference Result 347 states and 349 transitions. [2021-01-06 16:04:28,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-01-06 16:04:28,460 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 330 [2021-01-06 16:04:28,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:04:28,462 INFO L225 Difference]: With dead ends: 347 [2021-01-06 16:04:28,462 INFO L226 Difference]: Without dead ends: 340 [2021-01-06 16:04:28,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-01-06 16:04:28,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-01-06 16:04:28,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 337. [2021-01-06 16:04:28,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2021-01-06 16:04:28,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 338 transitions. [2021-01-06 16:04:28,509 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 338 transitions. Word has length 330 [2021-01-06 16:04:28,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:04:28,509 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 338 transitions. [2021-01-06 16:04:28,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2021-01-06 16:04:28,509 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 338 transitions. [2021-01-06 16:04:28,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-01-06 16:04:28,511 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:04:28,511 INFO L422 BasicCegarLoop]: trace histogram [59, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:04:28,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:04:28,726 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:04:28,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:04:28,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1728881826, now seen corresponding path program 58 times [2021-01-06 16:04:28,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:04:28,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155871202] [2021-01-06 16:04:28,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:04:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:04:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 8381 backedges. 0 proven. 8381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:04:31,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155871202] [2021-01-06 16:04:31,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144701290] [2021-01-06 16:04:31,949 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:04:32,627 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 16:04:32,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:04:32,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 2914 conjuncts, 69 conjunts are in the unsatisfiable core [2021-01-06 16:04:32,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:04:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 8381 backedges. 0 proven. 8381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:04:33,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:04:33,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 71 [2021-01-06 16:04:33,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361051618] [2021-01-06 16:04:33,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-01-06 16:04:33,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:04:33,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-01-06 16:04:33,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2021-01-06 16:04:33,069 INFO L87 Difference]: Start difference. First operand 337 states and 338 transitions. Second operand 71 states. [2021-01-06 16:04:33,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:04:33,532 INFO L93 Difference]: Finished difference Result 352 states and 354 transitions. [2021-01-06 16:04:33,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-01-06 16:04:33,532 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 335 [2021-01-06 16:04:33,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:04:33,534 INFO L225 Difference]: With dead ends: 352 [2021-01-06 16:04:33,534 INFO L226 Difference]: Without dead ends: 345 [2021-01-06 16:04:33,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2021-01-06 16:04:33,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-01-06 16:04:33,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 342. [2021-01-06 16:04:33,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2021-01-06 16:04:33,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 343 transitions. [2021-01-06 16:04:33,568 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 343 transitions. Word has length 335 [2021-01-06 16:04:33,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:04:33,568 INFO L481 AbstractCegarLoop]: Abstraction has 342 states and 343 transitions. [2021-01-06 16:04:33,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 71 states. [2021-01-06 16:04:33,568 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 343 transitions. [2021-01-06 16:04:33,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-01-06 16:04:33,569 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:04:33,570 INFO L422 BasicCegarLoop]: trace histogram [60, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:04:33,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2021-01-06 16:04:33,778 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:04:33,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:04:33,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1374736163, now seen corresponding path program 59 times [2021-01-06 16:04:33,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:04:33,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473366655] [2021-01-06 16:04:33,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:04:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:04:37,173 INFO L134 CoverageAnalysis]: Checked inductivity of 8673 backedges. 0 proven. 8673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:04:37,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473366655] [2021-01-06 16:04:37,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756201406] [2021-01-06 16:04:37,174 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:04:37,997 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2021-01-06 16:04:37,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:04:38,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 70 conjunts are in the unsatisfiable core [2021-01-06 16:04:38,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:04:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8673 backedges. 0 proven. 8673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:04:38,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:04:38,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 72 [2021-01-06 16:04:38,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348589064] [2021-01-06 16:04:38,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-01-06 16:04:38,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:04:38,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-01-06 16:04:38,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2021-01-06 16:04:38,488 INFO L87 Difference]: Start difference. First operand 342 states and 343 transitions. Second operand 72 states. [2021-01-06 16:04:38,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:04:38,994 INFO L93 Difference]: Finished difference Result 357 states and 359 transitions. [2021-01-06 16:04:38,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-01-06 16:04:38,994 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 340 [2021-01-06 16:04:38,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:04:38,996 INFO L225 Difference]: With dead ends: 357 [2021-01-06 16:04:38,996 INFO L226 Difference]: Without dead ends: 350 [2021-01-06 16:04:38,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2021-01-06 16:04:38,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-01-06 16:04:39,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 347. [2021-01-06 16:04:39,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2021-01-06 16:04:39,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 348 transitions. [2021-01-06 16:04:39,027 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 348 transitions. Word has length 340 [2021-01-06 16:04:39,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:04:39,027 INFO L481 AbstractCegarLoop]: Abstraction has 347 states and 348 transitions. [2021-01-06 16:04:39,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2021-01-06 16:04:39,027 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 348 transitions. [2021-01-06 16:04:39,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2021-01-06 16:04:39,028 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:04:39,029 INFO L422 BasicCegarLoop]: trace histogram [61, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:04:39,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:04:39,230 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:04:39,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:04:39,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1015934590, now seen corresponding path program 60 times [2021-01-06 16:04:39,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:04:39,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48070952] [2021-01-06 16:04:39,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:04:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:04:42,926 INFO L134 CoverageAnalysis]: Checked inductivity of 8970 backedges. 0 proven. 8970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:04:42,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48070952] [2021-01-06 16:04:42,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598644523] [2021-01-06 16:04:42,927 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:04:43,948 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2021-01-06 16:04:43,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:04:43,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 2998 conjuncts, 71 conjunts are in the unsatisfiable core [2021-01-06 16:04:43,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:04:44,462 INFO L134 CoverageAnalysis]: Checked inductivity of 8970 backedges. 0 proven. 8970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:04:44,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:04:44,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 73 [2021-01-06 16:04:44,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373444013] [2021-01-06 16:04:44,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-01-06 16:04:44,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:04:44,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-01-06 16:04:44,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2021-01-06 16:04:44,465 INFO L87 Difference]: Start difference. First operand 347 states and 348 transitions. Second operand 73 states. [2021-01-06 16:04:44,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:04:44,940 INFO L93 Difference]: Finished difference Result 362 states and 364 transitions. [2021-01-06 16:04:44,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-01-06 16:04:44,940 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 345 [2021-01-06 16:04:44,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:04:44,942 INFO L225 Difference]: With dead ends: 362 [2021-01-06 16:04:44,942 INFO L226 Difference]: Without dead ends: 355 [2021-01-06 16:04:44,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2021-01-06 16:04:44,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2021-01-06 16:04:44,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 352. [2021-01-06 16:04:44,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2021-01-06 16:04:44,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 353 transitions. [2021-01-06 16:04:44,992 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 353 transitions. Word has length 345 [2021-01-06 16:04:44,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:04:44,992 INFO L481 AbstractCegarLoop]: Abstraction has 352 states and 353 transitions. [2021-01-06 16:04:44,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2021-01-06 16:04:44,993 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 353 transitions. [2021-01-06 16:04:44,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2021-01-06 16:04:44,994 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:04:44,995 INFO L422 BasicCegarLoop]: trace histogram [62, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:04:45,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2021-01-06 16:04:45,206 INFO L429 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:04:45,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:04:45,206 INFO L82 PathProgramCache]: Analyzing trace with hash 308989949, now seen corresponding path program 61 times [2021-01-06 16:04:45,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:04:45,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018074449] [2021-01-06 16:04:45,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:04:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:04:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 9272 backedges. 0 proven. 9272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:04:48,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018074449] [2021-01-06 16:04:48,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438757496] [2021-01-06 16:04:48,916 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:04:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:04:49,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 3040 conjuncts, 72 conjunts are in the unsatisfiable core [2021-01-06 16:04:49,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:04:50,138 INFO L134 CoverageAnalysis]: Checked inductivity of 9272 backedges. 0 proven. 9272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:04:50,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:04:50,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 74 [2021-01-06 16:04:50,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495122727] [2021-01-06 16:04:50,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 74 states [2021-01-06 16:04:50,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:04:50,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-01-06 16:04:50,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2021-01-06 16:04:50,141 INFO L87 Difference]: Start difference. First operand 352 states and 353 transitions. Second operand 74 states. [2021-01-06 16:04:50,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:04:50,661 INFO L93 Difference]: Finished difference Result 367 states and 369 transitions. [2021-01-06 16:04:50,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-01-06 16:04:50,662 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 350 [2021-01-06 16:04:50,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:04:50,664 INFO L225 Difference]: With dead ends: 367 [2021-01-06 16:04:50,664 INFO L226 Difference]: Without dead ends: 360 [2021-01-06 16:04:50,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2021-01-06 16:04:50,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-01-06 16:04:50,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 357. [2021-01-06 16:04:50,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2021-01-06 16:04:50,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 358 transitions. [2021-01-06 16:04:50,699 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 358 transitions. Word has length 350 [2021-01-06 16:04:50,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:04:50,699 INFO L481 AbstractCegarLoop]: Abstraction has 357 states and 358 transitions. [2021-01-06 16:04:50,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2021-01-06 16:04:50,699 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 358 transitions. [2021-01-06 16:04:50,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2021-01-06 16:04:50,701 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:04:50,701 INFO L422 BasicCegarLoop]: trace histogram [63, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:04:50,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:04:50,902 INFO L429 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:04:50,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:04:50,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1763501666, now seen corresponding path program 62 times [2021-01-06 16:04:50,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:04:50,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454371644] [2021-01-06 16:04:50,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:04:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:04:54,757 INFO L134 CoverageAnalysis]: Checked inductivity of 9579 backedges. 0 proven. 9579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:04:54,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454371644] [2021-01-06 16:04:54,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524564655] [2021-01-06 16:04:54,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:04:55,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:04:55,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:04:55,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 3082 conjuncts, 73 conjunts are in the unsatisfiable core [2021-01-06 16:04:55,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:04:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 9579 backedges. 0 proven. 9579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:04:56,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:04:56,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 75 [2021-01-06 16:04:56,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437175067] [2021-01-06 16:04:56,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-01-06 16:04:56,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:04:56,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-01-06 16:04:56,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2021-01-06 16:04:56,011 INFO L87 Difference]: Start difference. First operand 357 states and 358 transitions. Second operand 75 states. [2021-01-06 16:04:56,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:04:56,479 INFO L93 Difference]: Finished difference Result 372 states and 374 transitions. [2021-01-06 16:04:56,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-01-06 16:04:56,480 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 355 [2021-01-06 16:04:56,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:04:56,481 INFO L225 Difference]: With dead ends: 372 [2021-01-06 16:04:56,481 INFO L226 Difference]: Without dead ends: 365 [2021-01-06 16:04:56,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2021-01-06 16:04:56,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-01-06 16:04:56,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 362. [2021-01-06 16:04:56,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2021-01-06 16:04:56,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 363 transitions. [2021-01-06 16:04:56,519 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 363 transitions. Word has length 355 [2021-01-06 16:04:56,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:04:56,520 INFO L481 AbstractCegarLoop]: Abstraction has 362 states and 363 transitions. [2021-01-06 16:04:56,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2021-01-06 16:04:56,520 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 363 transitions. [2021-01-06 16:04:56,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2021-01-06 16:04:56,521 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:04:56,522 INFO L422 BasicCegarLoop]: trace histogram [64, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:04:56,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-01-06 16:04:56,722 INFO L429 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:04:56,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:04:56,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1465776355, now seen corresponding path program 63 times [2021-01-06 16:04:56,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:04:56,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385195132] [2021-01-06 16:04:56,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:04:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:05:00,715 INFO L134 CoverageAnalysis]: Checked inductivity of 9891 backedges. 0 proven. 9891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:05:00,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385195132] [2021-01-06 16:05:00,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523694534] [2021-01-06 16:05:00,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:05:01,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2021-01-06 16:05:01,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:05:01,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 3124 conjuncts, 74 conjunts are in the unsatisfiable core [2021-01-06 16:05:01,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:05:02,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9891 backedges. 0 proven. 9891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:05:02,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:05:02,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 76 [2021-01-06 16:05:02,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245905006] [2021-01-06 16:05:02,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-01-06 16:05:02,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:05:02,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-01-06 16:05:02,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-01-06 16:05:02,344 INFO L87 Difference]: Start difference. First operand 362 states and 363 transitions. Second operand 76 states. [2021-01-06 16:05:02,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:05:02,907 INFO L93 Difference]: Finished difference Result 377 states and 379 transitions. [2021-01-06 16:05:02,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-01-06 16:05:02,909 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 360 [2021-01-06 16:05:02,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:05:02,912 INFO L225 Difference]: With dead ends: 377 [2021-01-06 16:05:02,912 INFO L226 Difference]: Without dead ends: 370 [2021-01-06 16:05:02,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-01-06 16:05:02,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-01-06 16:05:02,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 367. [2021-01-06 16:05:02,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2021-01-06 16:05:02,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 368 transitions. [2021-01-06 16:05:02,972 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 368 transitions. Word has length 360 [2021-01-06 16:05:02,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:05:02,973 INFO L481 AbstractCegarLoop]: Abstraction has 367 states and 368 transitions. [2021-01-06 16:05:02,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2021-01-06 16:05:02,973 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 368 transitions. [2021-01-06 16:05:02,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2021-01-06 16:05:02,975 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:05:02,975 INFO L422 BasicCegarLoop]: trace histogram [65, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:05:03,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:05:03,191 INFO L429 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:05:03,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:05:03,191 INFO L82 PathProgramCache]: Analyzing trace with hash 778773314, now seen corresponding path program 64 times [2021-01-06 16:05:03,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:05:03,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453788714] [2021-01-06 16:05:03,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:05:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:05:07,401 INFO L134 CoverageAnalysis]: Checked inductivity of 10208 backedges. 0 proven. 10208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:05:07,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453788714] [2021-01-06 16:05:07,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902671442] [2021-01-06 16:05:07,401 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:05:08,191 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 16:05:08,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:05:08,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 3166 conjuncts, 75 conjunts are in the unsatisfiable core [2021-01-06 16:05:08,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:05:08,677 INFO L134 CoverageAnalysis]: Checked inductivity of 10208 backedges. 0 proven. 10208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:05:08,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:05:08,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 77 [2021-01-06 16:05:08,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749843705] [2021-01-06 16:05:08,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-01-06 16:05:08,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:05:08,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-01-06 16:05:08,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-01-06 16:05:08,680 INFO L87 Difference]: Start difference. First operand 367 states and 368 transitions. Second operand 77 states. [2021-01-06 16:05:09,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:05:09,256 INFO L93 Difference]: Finished difference Result 382 states and 384 transitions. [2021-01-06 16:05:09,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-01-06 16:05:09,262 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 365 [2021-01-06 16:05:09,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:05:09,264 INFO L225 Difference]: With dead ends: 382 [2021-01-06 16:05:09,264 INFO L226 Difference]: Without dead ends: 375 [2021-01-06 16:05:09,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-01-06 16:05:09,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-01-06 16:05:09,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 372. [2021-01-06 16:05:09,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2021-01-06 16:05:09,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 373 transitions. [2021-01-06 16:05:09,328 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 373 transitions. Word has length 365 [2021-01-06 16:05:09,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:05:09,329 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 373 transitions. [2021-01-06 16:05:09,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 77 states. [2021-01-06 16:05:09,329 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 373 transitions. [2021-01-06 16:05:09,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2021-01-06 16:05:09,331 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:05:09,331 INFO L422 BasicCegarLoop]: trace histogram [66, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:05:09,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-01-06 16:05:09,545 INFO L429 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:05:09,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:05:09,545 INFO L82 PathProgramCache]: Analyzing trace with hash -451488195, now seen corresponding path program 65 times [2021-01-06 16:05:09,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:05:09,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022032671] [2021-01-06 16:05:09,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:05:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:05:13,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10530 backedges. 0 proven. 10530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:05:13,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022032671] [2021-01-06 16:05:13,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957230148] [2021-01-06 16:05:13,790 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:05:14,842 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2021-01-06 16:05:14,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:05:14,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 3208 conjuncts, 76 conjunts are in the unsatisfiable core [2021-01-06 16:05:14,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:05:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 10530 backedges. 0 proven. 10530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:05:15,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:05:15,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 78 [2021-01-06 16:05:15,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398601850] [2021-01-06 16:05:15,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-01-06 16:05:15,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:05:15,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-01-06 16:05:15,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-01-06 16:05:15,347 INFO L87 Difference]: Start difference. First operand 372 states and 373 transitions. Second operand 78 states. [2021-01-06 16:05:15,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:05:15,983 INFO L93 Difference]: Finished difference Result 387 states and 389 transitions. [2021-01-06 16:05:15,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-01-06 16:05:15,984 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 370 [2021-01-06 16:05:15,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:05:15,987 INFO L225 Difference]: With dead ends: 387 [2021-01-06 16:05:15,987 INFO L226 Difference]: Without dead ends: 380 [2021-01-06 16:05:15,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-01-06 16:05:15,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-01-06 16:05:16,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 377. [2021-01-06 16:05:16,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2021-01-06 16:05:16,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 378 transitions. [2021-01-06 16:05:16,081 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 378 transitions. Word has length 370 [2021-01-06 16:05:16,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:05:16,081 INFO L481 AbstractCegarLoop]: Abstraction has 377 states and 378 transitions. [2021-01-06 16:05:16,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2021-01-06 16:05:16,081 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 378 transitions. [2021-01-06 16:05:16,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2021-01-06 16:05:16,083 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:05:16,083 INFO L422 BasicCegarLoop]: trace histogram [67, 66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:05:16,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-01-06 16:05:16,284 INFO L429 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:05:16,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:05:16,285 INFO L82 PathProgramCache]: Analyzing trace with hash 205178914, now seen corresponding path program 66 times [2021-01-06 16:05:16,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:05:16,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440036322] [2021-01-06 16:05:16,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:05:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:05:20,742 INFO L134 CoverageAnalysis]: Checked inductivity of 10857 backedges. 0 proven. 10857 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:05:20,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440036322] [2021-01-06 16:05:20,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608090360] [2021-01-06 16:05:20,743 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:05:21,890 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2021-01-06 16:05:21,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:05:21,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 3250 conjuncts, 77 conjunts are in the unsatisfiable core [2021-01-06 16:05:21,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:05:22,383 INFO L134 CoverageAnalysis]: Checked inductivity of 10857 backedges. 0 proven. 10857 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:05:22,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:05:22,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 79 [2021-01-06 16:05:22,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362912178] [2021-01-06 16:05:22,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-01-06 16:05:22,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:05:22,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-01-06 16:05:22,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-01-06 16:05:22,385 INFO L87 Difference]: Start difference. First operand 377 states and 378 transitions. Second operand 79 states. [2021-01-06 16:05:22,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:05:22,895 INFO L93 Difference]: Finished difference Result 392 states and 394 transitions. [2021-01-06 16:05:22,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-01-06 16:05:22,896 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 375 [2021-01-06 16:05:22,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:05:22,898 INFO L225 Difference]: With dead ends: 392 [2021-01-06 16:05:22,898 INFO L226 Difference]: Without dead ends: 385 [2021-01-06 16:05:22,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-01-06 16:05:22,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-01-06 16:05:22,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 382. [2021-01-06 16:05:22,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2021-01-06 16:05:22,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 383 transitions. [2021-01-06 16:05:22,964 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 383 transitions. Word has length 375 [2021-01-06 16:05:22,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:05:22,964 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 383 transitions. [2021-01-06 16:05:22,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 79 states. [2021-01-06 16:05:22,964 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 383 transitions. [2021-01-06 16:05:22,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2021-01-06 16:05:22,966 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:05:22,966 INFO L422 BasicCegarLoop]: trace histogram [68, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:05:23,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-01-06 16:05:23,181 INFO L429 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:05:23,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:05:23,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1448395427, now seen corresponding path program 67 times [2021-01-06 16:05:23,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:05:23,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856328894] [2021-01-06 16:05:23,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:05:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:05:27,702 INFO L134 CoverageAnalysis]: Checked inductivity of 11189 backedges. 0 proven. 11189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:05:27,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856328894] [2021-01-06 16:05:27,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595748370] [2021-01-06 16:05:27,702 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:05:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:05:28,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 3292 conjuncts, 78 conjunts are in the unsatisfiable core [2021-01-06 16:05:28,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:05:28,999 INFO L134 CoverageAnalysis]: Checked inductivity of 11189 backedges. 0 proven. 11189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:05:28,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:05:28,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 80 [2021-01-06 16:05:28,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562525286] [2021-01-06 16:05:29,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-01-06 16:05:29,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:05:29,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-01-06 16:05:29,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-01-06 16:05:29,001 INFO L87 Difference]: Start difference. First operand 382 states and 383 transitions. Second operand 80 states. [2021-01-06 16:05:29,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:05:29,602 INFO L93 Difference]: Finished difference Result 397 states and 399 transitions. [2021-01-06 16:05:29,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-01-06 16:05:29,605 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 380 [2021-01-06 16:05:29,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:05:29,607 INFO L225 Difference]: With dead ends: 397 [2021-01-06 16:05:29,607 INFO L226 Difference]: Without dead ends: 390 [2021-01-06 16:05:29,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-01-06 16:05:29,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-01-06 16:05:29,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 387. [2021-01-06 16:05:29,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2021-01-06 16:05:29,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 388 transitions. [2021-01-06 16:05:29,650 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 388 transitions. Word has length 380 [2021-01-06 16:05:29,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:05:29,650 INFO L481 AbstractCegarLoop]: Abstraction has 387 states and 388 transitions. [2021-01-06 16:05:29,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 80 states. [2021-01-06 16:05:29,650 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 388 transitions. [2021-01-06 16:05:29,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2021-01-06 16:05:29,652 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:05:29,652 INFO L422 BasicCegarLoop]: trace histogram [69, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:05:29,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:05:29,853 INFO L429 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:05:29,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:05:29,854 INFO L82 PathProgramCache]: Analyzing trace with hash -35007230, now seen corresponding path program 68 times [2021-01-06 16:05:29,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:05:29,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684223688] [2021-01-06 16:05:29,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:05:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:05:34,529 INFO L134 CoverageAnalysis]: Checked inductivity of 11526 backedges. 0 proven. 11526 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:05:34,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684223688] [2021-01-06 16:05:34,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084239370] [2021-01-06 16:05:34,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:05:35,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:05:35,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:05:35,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 3334 conjuncts, 79 conjunts are in the unsatisfiable core [2021-01-06 16:05:35,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:05:35,866 INFO L134 CoverageAnalysis]: Checked inductivity of 11526 backedges. 0 proven. 11526 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:05:35,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:05:35,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 81 [2021-01-06 16:05:35,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106773298] [2021-01-06 16:05:35,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-01-06 16:05:35,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:05:35,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-01-06 16:05:35,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2021-01-06 16:05:35,868 INFO L87 Difference]: Start difference. First operand 387 states and 388 transitions. Second operand 81 states. [2021-01-06 16:05:36,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:05:36,499 INFO L93 Difference]: Finished difference Result 402 states and 404 transitions. [2021-01-06 16:05:36,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-01-06 16:05:36,499 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 385 [2021-01-06 16:05:36,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:05:36,501 INFO L225 Difference]: With dead ends: 402 [2021-01-06 16:05:36,501 INFO L226 Difference]: Without dead ends: 395 [2021-01-06 16:05:36,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2021-01-06 16:05:36,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-01-06 16:05:36,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 392. [2021-01-06 16:05:36,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2021-01-06 16:05:36,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 393 transitions. [2021-01-06 16:05:36,543 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 393 transitions. Word has length 385 [2021-01-06 16:05:36,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:05:36,543 INFO L481 AbstractCegarLoop]: Abstraction has 392 states and 393 transitions. [2021-01-06 16:05:36,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 81 states. [2021-01-06 16:05:36,543 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 393 transitions. [2021-01-06 16:05:36,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2021-01-06 16:05:36,545 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:05:36,545 INFO L422 BasicCegarLoop]: trace histogram [70, 69, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:05:36,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:05:36,753 INFO L429 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:05:36,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:05:36,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1707162749, now seen corresponding path program 69 times [2021-01-06 16:05:36,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:05:36,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623099255] [2021-01-06 16:05:36,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:05:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:05:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11868 backedges. 0 proven. 11868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:05:41,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623099255] [2021-01-06 16:05:41,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655200338] [2021-01-06 16:05:41,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:05:42,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2021-01-06 16:05:42,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:05:42,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 3376 conjuncts, 80 conjunts are in the unsatisfiable core [2021-01-06 16:05:42,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:05:43,276 INFO L134 CoverageAnalysis]: Checked inductivity of 11868 backedges. 0 proven. 11868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:05:43,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:05:43,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 82 [2021-01-06 16:05:43,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633721300] [2021-01-06 16:05:43,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-01-06 16:05:43,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:05:43,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-01-06 16:05:43,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-01-06 16:05:43,278 INFO L87 Difference]: Start difference. First operand 392 states and 393 transitions. Second operand 82 states. [2021-01-06 16:05:43,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:05:43,921 INFO L93 Difference]: Finished difference Result 407 states and 409 transitions. [2021-01-06 16:05:43,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-01-06 16:05:43,922 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 390 [2021-01-06 16:05:43,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:05:43,923 INFO L225 Difference]: With dead ends: 407 [2021-01-06 16:05:43,923 INFO L226 Difference]: Without dead ends: 400 [2021-01-06 16:05:43,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-01-06 16:05:43,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-01-06 16:05:43,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 397. [2021-01-06 16:05:43,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2021-01-06 16:05:43,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 398 transitions. [2021-01-06 16:05:43,967 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 398 transitions. Word has length 390 [2021-01-06 16:05:43,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:05:43,968 INFO L481 AbstractCegarLoop]: Abstraction has 397 states and 398 transitions. [2021-01-06 16:05:43,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2021-01-06 16:05:43,968 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 398 transitions. [2021-01-06 16:05:43,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2021-01-06 16:05:43,969 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:05:43,970 INFO L422 BasicCegarLoop]: trace histogram [71, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:05:44,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:05:44,170 INFO L429 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:05:44,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:05:44,171 INFO L82 PathProgramCache]: Analyzing trace with hash -514438686, now seen corresponding path program 70 times [2021-01-06 16:05:44,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:05:44,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502049260] [2021-01-06 16:05:44,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:05:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:05:49,059 INFO L134 CoverageAnalysis]: Checked inductivity of 12215 backedges. 0 proven. 12215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:05:49,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502049260] [2021-01-06 16:05:49,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326846920] [2021-01-06 16:05:49,060 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:05:49,906 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 16:05:49,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:05:49,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 3418 conjuncts, 81 conjunts are in the unsatisfiable core [2021-01-06 16:05:49,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:05:50,449 INFO L134 CoverageAnalysis]: Checked inductivity of 12215 backedges. 0 proven. 12215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:05:50,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:05:50,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 83 [2021-01-06 16:05:50,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47963606] [2021-01-06 16:05:50,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-01-06 16:05:50,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:05:50,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-01-06 16:05:50,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2021-01-06 16:05:50,457 INFO L87 Difference]: Start difference. First operand 397 states and 398 transitions. Second operand 83 states. [2021-01-06 16:05:51,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:05:51,071 INFO L93 Difference]: Finished difference Result 412 states and 414 transitions. [2021-01-06 16:05:51,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-01-06 16:05:51,072 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 395 [2021-01-06 16:05:51,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:05:51,073 INFO L225 Difference]: With dead ends: 412 [2021-01-06 16:05:51,074 INFO L226 Difference]: Without dead ends: 405 [2021-01-06 16:05:51,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2021-01-06 16:05:51,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-01-06 16:05:51,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 402. [2021-01-06 16:05:51,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2021-01-06 16:05:51,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 403 transitions. [2021-01-06 16:05:51,119 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 403 transitions. Word has length 395 [2021-01-06 16:05:51,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:05:51,119 INFO L481 AbstractCegarLoop]: Abstraction has 402 states and 403 transitions. [2021-01-06 16:05:51,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 83 states. [2021-01-06 16:05:51,120 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 403 transitions. [2021-01-06 16:05:51,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2021-01-06 16:05:51,121 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:05:51,121 INFO L422 BasicCegarLoop]: trace histogram [72, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:05:51,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2021-01-06 16:05:51,322 INFO L429 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:05:51,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:05:51,323 INFO L82 PathProgramCache]: Analyzing trace with hash 909824925, now seen corresponding path program 71 times [2021-01-06 16:05:51,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:05:51,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3723042] [2021-01-06 16:05:51,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:05:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:05:56,386 INFO L134 CoverageAnalysis]: Checked inductivity of 12567 backedges. 0 proven. 12567 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:05:56,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3723042] [2021-01-06 16:05:56,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755654418] [2021-01-06 16:05:56,387 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:05:57,488 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2021-01-06 16:05:57,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:05:57,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 3460 conjuncts, 82 conjunts are in the unsatisfiable core [2021-01-06 16:05:57,505 INFO L286 TraceCheckSpWp]: Computing forward predicates...