/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-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-memsafety/cstrncmp-alloca-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 16:48:54,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 16:48:54,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 16:48:55,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 16:48:55,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 16:48:55,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 16:48:55,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 16:48:55,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 16:48:55,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 16:48:55,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 16:48:55,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 16:48:55,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 16:48:55,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 16:48:55,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 16:48:55,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 16:48:55,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 16:48:55,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 16:48:55,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 16:48:55,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 16:48:55,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 16:48:55,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 16:48:55,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 16:48:55,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 16:48:55,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 16:48:55,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 16:48:55,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 16:48:55,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 16:48:55,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 16:48:55,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 16:48:55,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 16:48:55,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 16:48:55,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 16:48:55,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 16:48:55,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 16:48:55,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 16:48:55,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 16:48:55,128 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 16:48:55,154 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 16:48:55,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 16:48:55,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 16:48:55,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 16:48:55,160 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 16:48:55,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 16:48:55,161 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 16:48:55,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 16:48:55,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 16:48:55,163 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 16:48:55,163 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 16:48:55,163 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 16:48:55,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 16:48:55,163 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 16:48:55,164 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 16:48:55,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 16:48:55,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 16:48:55,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 16:48:55,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 16:48:55,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 16:48:55,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 16:48:55,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 16:48:55,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 16:48:55,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 16:48:55,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 16:48:55,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 16:48:55,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 16:48:55,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 16:48:55,635 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 16:48:55,639 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 16:48:55,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrncmp-alloca-1.i [2020-12-23 16:48:55,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6e7d6219f/fa291e7598a844479ff4dfe68aaa4db9/FLAG35e7d2b22 [2020-12-23 16:48:56,438 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 16:48:56,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrncmp-alloca-1.i [2020-12-23 16:48:56,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6e7d6219f/fa291e7598a844479ff4dfe68aaa4db9/FLAG35e7d2b22 [2020-12-23 16:48:56,753 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6e7d6219f/fa291e7598a844479ff4dfe68aaa4db9 [2020-12-23 16:48:56,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 16:48:56,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 16:48:56,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 16:48:56,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 16:48:56,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 16:48:56,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:48:56" (1/1) ... [2020-12-23 16:48:56,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@467202e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:56, skipping insertion in model container [2020-12-23 16:48:56,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:48:56" (1/1) ... [2020-12-23 16:48:56,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 16:48:56,848 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~uc1~0,] left hand side expression in assignment: lhs: VariableLHS[~uc2~0,] left hand side expression in assignment: lhs: VariableLHS[~length1~0,] left hand side expression in assignment: lhs: VariableLHS[~length2~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString1~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString1~0,],offset],IdentifierExpression[~i~0,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString2~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString2~0,],offset],IdentifierExpression[~i~1,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString1~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString1~0,],offset],BinaryExpression[ARITHMINUS,IdentifierExpression[~length1~0,],IntegerLiteral[1]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString2~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString2~0,],offset],BinaryExpression[ARITHMINUS,IdentifierExpression[~length2~0,],IntegerLiteral[1]]]]] [2020-12-23 16:48:57,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:48:57,248 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~uc1~0,] left hand side expression in assignment: lhs: VariableLHS[~uc2~0,] left hand side expression in assignment: lhs: VariableLHS[~length1~0,] left hand side expression in assignment: lhs: VariableLHS[~length2~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString1~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString1~0,],offset],IdentifierExpression[~i~0,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString2~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString2~0,],offset],IdentifierExpression[~i~1,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString1~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString1~0,],offset],BinaryExpression[ARITHMINUS,IdentifierExpression[~length1~0,],IntegerLiteral[1]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString2~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString2~0,],offset],BinaryExpression[ARITHMINUS,IdentifierExpression[~length2~0,],IntegerLiteral[1]]]]] [2020-12-23 16:48:57,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:48:57,407 INFO L208 MainTranslator]: Completed translation [2020-12-23 16:48:57,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57 WrapperNode [2020-12-23 16:48:57,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 16:48:57,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 16:48:57,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 16:48:57,410 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 16:48:57,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57" (1/1) ... [2020-12-23 16:48:57,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57" (1/1) ... [2020-12-23 16:48:57,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 16:48:57,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 16:48:57,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 16:48:57,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 16:48:57,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57" (1/1) ... [2020-12-23 16:48:57,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57" (1/1) ... [2020-12-23 16:48:57,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57" (1/1) ... [2020-12-23 16:48:57,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57" (1/1) ... [2020-12-23 16:48:57,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57" (1/1) ... [2020-12-23 16:48:57,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57" (1/1) ... [2020-12-23 16:48:57,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57" (1/1) ... [2020-12-23 16:48:57,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 16:48:57,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 16:48:57,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 16:48:57,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 16:48:57,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 16:48:57,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 16:48:57,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 16:48:57,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 16:48:57,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 16:48:57,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 16:48:57,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 16:48:58,428 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 16:48:58,429 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-23 16:48:58,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:48:58 BoogieIcfgContainer [2020-12-23 16:48:58,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 16:48:58,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 16:48:58,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 16:48:58,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 16:48:58,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:48:56" (1/3) ... [2020-12-23 16:48:58,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ffb63f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:48:58, skipping insertion in model container [2020-12-23 16:48:58,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57" (2/3) ... [2020-12-23 16:48:58,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ffb63f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:48:58, skipping insertion in model container [2020-12-23 16:48:58,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:48:58" (3/3) ... [2020-12-23 16:48:58,440 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrncmp-alloca-1.i [2020-12-23 16:48:58,446 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 16:48:58,451 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2020-12-23 16:48:58,469 INFO L253 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2020-12-23 16:48:58,488 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 16:48:58,488 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 16:48:58,489 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 16:48:58,489 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 16:48:58,489 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 16:48:58,489 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 16:48:58,489 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 16:48:58,489 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 16:48:58,505 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2020-12-23 16:48:58,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 16:48:58,510 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:58,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:58,512 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:48:58,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:58,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2020-12-23 16:48:58,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:58,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512890355] [2020-12-23 16:48:58,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:58,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:58,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512890355] [2020-12-23 16:48:58,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:48:58,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:48:58,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583481758] [2020-12-23 16:48:58,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:48:58,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:58,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:48:58,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:48:58,753 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 4 states. [2020-12-23 16:48:58,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:58,806 INFO L93 Difference]: Finished difference Result 106 states and 122 transitions. [2020-12-23 16:48:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:48:58,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 16:48:58,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:58,820 INFO L225 Difference]: With dead ends: 106 [2020-12-23 16:48:58,820 INFO L226 Difference]: Without dead ends: 102 [2020-12-23 16:48:58,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:48:58,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-23 16:48:58,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 58. [2020-12-23 16:48:58,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-23 16:48:58,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2020-12-23 16:48:58,866 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 7 [2020-12-23 16:48:58,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:58,867 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2020-12-23 16:48:58,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:48:58,867 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2020-12-23 16:48:58,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 16:48:58,868 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:58,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:58,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 16:48:58,868 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:48:58,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:58,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1806876138, now seen corresponding path program 1 times [2020-12-23 16:48:58,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:58,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176520655] [2020-12-23 16:48:58,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:58,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:58,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176520655] [2020-12-23 16:48:58,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:48:58,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:48:58,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805300248] [2020-12-23 16:48:58,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:48:58,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:58,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:48:58,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:48:58,934 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand 3 states. [2020-12-23 16:48:58,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:58,980 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-12-23 16:48:58,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:48:58,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-23 16:48:58,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:58,981 INFO L225 Difference]: With dead ends: 56 [2020-12-23 16:48:58,982 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 16:48:58,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:48:58,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 16:48:58,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-12-23 16:48:58,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-23 16:48:58,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2020-12-23 16:48:58,990 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 7 [2020-12-23 16:48:58,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:58,990 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2020-12-23 16:48:58,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:48:58,991 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-12-23 16:48:58,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 16:48:58,991 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:58,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:58,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 16:48:58,992 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:48:58,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:58,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2020-12-23 16:48:58,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:58,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096746869] [2020-12-23 16:48:58,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:59,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096746869] [2020-12-23 16:48:59,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:48:59,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:48:59,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791484367] [2020-12-23 16:48:59,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:48:59,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:59,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:48:59,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:48:59,179 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 4 states. [2020-12-23 16:48:59,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:59,384 INFO L93 Difference]: Finished difference Result 103 states and 120 transitions. [2020-12-23 16:48:59,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:48:59,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 16:48:59,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:59,391 INFO L225 Difference]: With dead ends: 103 [2020-12-23 16:48:59,392 INFO L226 Difference]: Without dead ends: 103 [2020-12-23 16:48:59,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:48:59,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-23 16:48:59,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 58. [2020-12-23 16:48:59,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-23 16:48:59,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-12-23 16:48:59,409 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 7 [2020-12-23 16:48:59,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:59,409 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-12-23 16:48:59,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:48:59,409 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-12-23 16:48:59,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 16:48:59,412 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:59,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:59,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 16:48:59,413 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:48:59,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:59,415 INFO L82 PathProgramCache]: Analyzing trace with hash -533876960, now seen corresponding path program 1 times [2020-12-23 16:48:59,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:59,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899175826] [2020-12-23 16:48:59,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:59,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:59,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899175826] [2020-12-23 16:48:59,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:48:59,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:48:59,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783440816] [2020-12-23 16:48:59,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:48:59,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:59,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:48:59,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:48:59,561 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 4 states. [2020-12-23 16:48:59,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:59,633 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2020-12-23 16:48:59,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:48:59,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 16:48:59,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:59,635 INFO L225 Difference]: With dead ends: 57 [2020-12-23 16:48:59,635 INFO L226 Difference]: Without dead ends: 57 [2020-12-23 16:48:59,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:48:59,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-23 16:48:59,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-12-23 16:48:59,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-23 16:48:59,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2020-12-23 16:48:59,651 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 9 [2020-12-23 16:48:59,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:59,652 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2020-12-23 16:48:59,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:48:59,652 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2020-12-23 16:48:59,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 16:48:59,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:59,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:59,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 16:48:59,653 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:48:59,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:59,654 INFO L82 PathProgramCache]: Analyzing trace with hash -533876908, now seen corresponding path program 1 times [2020-12-23 16:48:59,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:59,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124109102] [2020-12-23 16:48:59,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:59,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:59,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124109102] [2020-12-23 16:48:59,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:48:59,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:48:59,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863131659] [2020-12-23 16:48:59,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:48:59,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:59,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:48:59,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:48:59,733 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 4 states. [2020-12-23 16:48:59,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:59,773 INFO L93 Difference]: Finished difference Result 104 states and 122 transitions. [2020-12-23 16:48:59,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:48:59,776 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 16:48:59,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:59,778 INFO L225 Difference]: With dead ends: 104 [2020-12-23 16:48:59,779 INFO L226 Difference]: Without dead ends: 104 [2020-12-23 16:48:59,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:48:59,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-23 16:48:59,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 68. [2020-12-23 16:48:59,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-23 16:48:59,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2020-12-23 16:48:59,796 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 9 [2020-12-23 16:48:59,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:59,796 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2020-12-23 16:48:59,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:48:59,797 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2020-12-23 16:48:59,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 16:48:59,797 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:59,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:59,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 16:48:59,798 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:48:59,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:59,800 INFO L82 PathProgramCache]: Analyzing trace with hash -476618606, now seen corresponding path program 1 times [2020-12-23 16:48:59,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:59,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391226043] [2020-12-23 16:48:59,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:59,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:59,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391226043] [2020-12-23 16:48:59,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:48:59,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:48:59,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229026880] [2020-12-23 16:48:59,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:48:59,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:59,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:48:59,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:48:59,865 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand 3 states. [2020-12-23 16:48:59,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:59,899 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2020-12-23 16:48:59,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:48:59,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-23 16:48:59,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:59,901 INFO L225 Difference]: With dead ends: 66 [2020-12-23 16:48:59,902 INFO L226 Difference]: Without dead ends: 66 [2020-12-23 16:48:59,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:48:59,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-23 16:48:59,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-23 16:48:59,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 16:48:59,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2020-12-23 16:48:59,913 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 9 [2020-12-23 16:48:59,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:59,914 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2020-12-23 16:48:59,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:48:59,914 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2020-12-23 16:48:59,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 16:48:59,915 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:59,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:59,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 16:48:59,916 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:48:59,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:59,920 INFO L82 PathProgramCache]: Analyzing trace with hash -476618605, now seen corresponding path program 1 times [2020-12-23 16:48:59,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:59,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488763415] [2020-12-23 16:48:59,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:00,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:00,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488763415] [2020-12-23 16:49:00,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:00,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:49:00,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661402720] [2020-12-23 16:49:00,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:49:00,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:00,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:49:00,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:49:00,033 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand 5 states. [2020-12-23 16:49:00,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:00,132 INFO L93 Difference]: Finished difference Result 104 states and 124 transitions. [2020-12-23 16:49:00,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:49:00,132 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-23 16:49:00,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:00,133 INFO L225 Difference]: With dead ends: 104 [2020-12-23 16:49:00,134 INFO L226 Difference]: Without dead ends: 104 [2020-12-23 16:49:00,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:49:00,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-23 16:49:00,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 68. [2020-12-23 16:49:00,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-23 16:49:00,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 83 transitions. [2020-12-23 16:49:00,140 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 83 transitions. Word has length 9 [2020-12-23 16:49:00,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:00,140 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 83 transitions. [2020-12-23 16:49:00,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:49:00,140 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 83 transitions. [2020-12-23 16:49:00,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 16:49:00,141 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:00,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:00,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 16:49:00,142 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:00,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:00,143 INFO L82 PathProgramCache]: Analyzing trace with hash 629683418, now seen corresponding path program 1 times [2020-12-23 16:49:00,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:00,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770065187] [2020-12-23 16:49:00,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:00,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:00,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770065187] [2020-12-23 16:49:00,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:00,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:49:00,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781508187] [2020-12-23 16:49:00,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:49:00,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:00,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:49:00,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:49:00,186 INFO L87 Difference]: Start difference. First operand 68 states and 83 transitions. Second operand 4 states. [2020-12-23 16:49:00,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:00,223 INFO L93 Difference]: Finished difference Result 67 states and 82 transitions. [2020-12-23 16:49:00,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:49:00,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-23 16:49:00,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:00,225 INFO L225 Difference]: With dead ends: 67 [2020-12-23 16:49:00,225 INFO L226 Difference]: Without dead ends: 67 [2020-12-23 16:49:00,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:49:00,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-23 16:49:00,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-12-23 16:49:00,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-23 16:49:00,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2020-12-23 16:49:00,229 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 10 [2020-12-23 16:49:00,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:00,230 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2020-12-23 16:49:00,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:49:00,230 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2020-12-23 16:49:00,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 16:49:00,231 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:00,231 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:00,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 16:49:00,232 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:00,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:00,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2020-12-23 16:49:00,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:00,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646591312] [2020-12-23 16:49:00,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:00,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:00,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646591312] [2020-12-23 16:49:00,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308875139] [2020-12-23 16:49:00,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:00,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-23 16:49:00,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:00,451 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_22|], 1=[|v_#valid_30|]} [2020-12-23 16:49:00,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:49:00,473 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-23 16:49:00,475 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:00,485 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:00,493 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:49:00,501 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:00,510 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:00,514 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:00,514 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2020-12-23 16:49:00,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:00,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:00,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-23 16:49:00,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52286650] [2020-12-23 16:49:00,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 16:49:00,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:00,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 16:49:00,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:49:00,554 INFO L87 Difference]: Start difference. First operand 67 states and 82 transitions. Second operand 6 states. [2020-12-23 16:49:00,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:00,689 INFO L93 Difference]: Finished difference Result 113 states and 134 transitions. [2020-12-23 16:49:00,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:49:00,689 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 16:49:00,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:00,690 INFO L225 Difference]: With dead ends: 113 [2020-12-23 16:49:00,690 INFO L226 Difference]: Without dead ends: 113 [2020-12-23 16:49:00,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:49:00,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-23 16:49:00,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 62. [2020-12-23 16:49:00,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-23 16:49:00,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2020-12-23 16:49:00,695 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 11 [2020-12-23 16:49:00,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:00,695 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2020-12-23 16:49:00,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 16:49:00,695 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2020-12-23 16:49:00,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 16:49:00,696 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:00,696 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:00,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-23 16:49:00,911 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:00,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:00,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1862804906, now seen corresponding path program 1 times [2020-12-23 16:49:00,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:00,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578807491] [2020-12-23 16:49:00,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:00,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:00,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578807491] [2020-12-23 16:49:00,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137409755] [2020-12-23 16:49:00,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:01,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 16:49:01,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:01,075 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:01,075 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-23 16:49:01,078 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:01,102 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-12-23 16:49:01,105 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:01,106 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2020-12-23 16:49:01,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:01,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:01,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-23 16:49:01,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705804260] [2020-12-23 16:49:01,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 16:49:01,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:01,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 16:49:01,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:49:01,170 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand 7 states. [2020-12-23 16:49:01,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:01,290 INFO L93 Difference]: Finished difference Result 96 states and 113 transitions. [2020-12-23 16:49:01,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 16:49:01,290 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-12-23 16:49:01,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:01,291 INFO L225 Difference]: With dead ends: 96 [2020-12-23 16:49:01,291 INFO L226 Difference]: Without dead ends: 96 [2020-12-23 16:49:01,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:49:01,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-23 16:49:01,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 59. [2020-12-23 16:49:01,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-23 16:49:01,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2020-12-23 16:49:01,301 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 13 [2020-12-23 16:49:01,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:01,302 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2020-12-23 16:49:01,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 16:49:01,302 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2020-12-23 16:49:01,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 16:49:01,307 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:01,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:01,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 16:49:01,521 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:01,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:01,522 INFO L82 PathProgramCache]: Analyzing trace with hash 172810813, now seen corresponding path program 1 times [2020-12-23 16:49:01,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:01,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338687385] [2020-12-23 16:49:01,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:01,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:01,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338687385] [2020-12-23 16:49:01,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:01,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:49:01,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533382206] [2020-12-23 16:49:01,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:49:01,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:01,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:49:01,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:49:01,607 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 4 states. [2020-12-23 16:49:01,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:01,659 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-12-23 16:49:01,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:49:01,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-23 16:49:01,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:01,660 INFO L225 Difference]: With dead ends: 58 [2020-12-23 16:49:01,660 INFO L226 Difference]: Without dead ends: 53 [2020-12-23 16:49:01,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:49:01,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-23 16:49:01,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-12-23 16:49:01,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-23 16:49:01,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-12-23 16:49:01,666 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 14 [2020-12-23 16:49:01,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:01,666 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-12-23 16:49:01,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:49:01,666 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-12-23 16:49:01,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 16:49:01,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:01,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:01,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 16:49:01,668 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:01,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:01,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1062175016, now seen corresponding path program 1 times [2020-12-23 16:49:01,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:01,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434922775] [2020-12-23 16:49:01,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:01,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:01,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434922775] [2020-12-23 16:49:01,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:01,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:49:01,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233968667] [2020-12-23 16:49:01,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:49:01,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:01,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:49:01,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:49:01,737 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 4 states. [2020-12-23 16:49:01,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:01,777 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-12-23 16:49:01,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:49:01,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-23 16:49:01,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:01,779 INFO L225 Difference]: With dead ends: 50 [2020-12-23 16:49:01,779 INFO L226 Difference]: Without dead ends: 50 [2020-12-23 16:49:01,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:49:01,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-23 16:49:01,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-23 16:49:01,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 16:49:01,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-12-23 16:49:01,784 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 15 [2020-12-23 16:49:01,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:01,784 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-12-23 16:49:01,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:49:01,784 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-12-23 16:49:01,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 16:49:01,787 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:01,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:01,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 16:49:01,788 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:01,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:01,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1062175017, now seen corresponding path program 1 times [2020-12-23 16:49:01,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:01,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318961367] [2020-12-23 16:49:01,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:01,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:01,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318961367] [2020-12-23 16:49:01,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:01,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 16:49:01,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842583337] [2020-12-23 16:49:01,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 16:49:01,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:01,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 16:49:01,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:49:01,894 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 6 states. [2020-12-23 16:49:01,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:01,981 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-12-23 16:49:01,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:49:01,982 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 16:49:01,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:01,982 INFO L225 Difference]: With dead ends: 67 [2020-12-23 16:49:01,982 INFO L226 Difference]: Without dead ends: 67 [2020-12-23 16:49:01,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:49:01,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-23 16:49:01,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 59. [2020-12-23 16:49:01,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-23 16:49:01,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 72 transitions. [2020-12-23 16:49:01,985 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 72 transitions. Word has length 15 [2020-12-23 16:49:01,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:01,985 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 72 transitions. [2020-12-23 16:49:01,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 16:49:01,986 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 72 transitions. [2020-12-23 16:49:01,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 16:49:01,986 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:01,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:01,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 16:49:01,987 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:01,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:01,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1432312828, now seen corresponding path program 1 times [2020-12-23 16:49:01,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:01,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079849937] [2020-12-23 16:49:01,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:02,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:02,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079849937] [2020-12-23 16:49:02,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:02,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:49:02,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410067642] [2020-12-23 16:49:02,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:49:02,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:02,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:49:02,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:49:02,017 INFO L87 Difference]: Start difference. First operand 59 states and 72 transitions. Second operand 4 states. [2020-12-23 16:49:02,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:02,050 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2020-12-23 16:49:02,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:49:02,050 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-23 16:49:02,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:02,051 INFO L225 Difference]: With dead ends: 57 [2020-12-23 16:49:02,051 INFO L226 Difference]: Without dead ends: 57 [2020-12-23 16:49:02,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:49:02,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-23 16:49:02,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-12-23 16:49:02,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-23 16:49:02,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2020-12-23 16:49:02,053 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 16 [2020-12-23 16:49:02,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:02,054 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2020-12-23 16:49:02,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:49:02,054 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2020-12-23 16:49:02,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 16:49:02,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:02,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:02,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 16:49:02,055 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:02,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:02,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1432312827, now seen corresponding path program 1 times [2020-12-23 16:49:02,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:02,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418731095] [2020-12-23 16:49:02,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:02,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:02,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418731095] [2020-12-23 16:49:02,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:02,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 16:49:02,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046704702] [2020-12-23 16:49:02,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 16:49:02,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:02,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 16:49:02,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:49:02,117 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand 6 states. [2020-12-23 16:49:02,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:02,182 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-12-23 16:49:02,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:49:02,183 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-23 16:49:02,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:02,183 INFO L225 Difference]: With dead ends: 61 [2020-12-23 16:49:02,184 INFO L226 Difference]: Without dead ends: 58 [2020-12-23 16:49:02,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:49:02,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-23 16:49:02,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-12-23 16:49:02,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-23 16:49:02,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2020-12-23 16:49:02,186 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 16 [2020-12-23 16:49:02,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:02,186 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2020-12-23 16:49:02,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 16:49:02,187 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-12-23 16:49:02,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 16:49:02,187 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:02,187 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:02,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 16:49:02,188 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:02,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:02,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1455987438, now seen corresponding path program 1 times [2020-12-23 16:49:02,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:02,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007597575] [2020-12-23 16:49:02,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:02,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:02,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007597575] [2020-12-23 16:49:02,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:02,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:49:02,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386413317] [2020-12-23 16:49:02,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:49:02,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:02,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:49:02,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:49:02,212 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 3 states. [2020-12-23 16:49:02,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:02,221 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-12-23 16:49:02,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:49:02,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-23 16:49:02,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:02,222 INFO L225 Difference]: With dead ends: 58 [2020-12-23 16:49:02,222 INFO L226 Difference]: Without dead ends: 57 [2020-12-23 16:49:02,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:49:02,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-23 16:49:02,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-12-23 16:49:02,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-23 16:49:02,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-12-23 16:49:02,224 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 20 [2020-12-23 16:49:02,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:02,225 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-12-23 16:49:02,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:49:02,225 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-12-23 16:49:02,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 16:49:02,225 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:02,226 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:02,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 16:49:02,226 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:02,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:02,227 INFO L82 PathProgramCache]: Analyzing trace with hash 420786095, now seen corresponding path program 1 times [2020-12-23 16:49:02,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:02,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584001417] [2020-12-23 16:49:02,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:02,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:02,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584001417] [2020-12-23 16:49:02,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:02,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:49:02,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83972597] [2020-12-23 16:49:02,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:49:02,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:02,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:49:02,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:49:02,262 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 3 states. [2020-12-23 16:49:02,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:02,269 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2020-12-23 16:49:02,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:49:02,269 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-23 16:49:02,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:02,270 INFO L225 Difference]: With dead ends: 58 [2020-12-23 16:49:02,270 INFO L226 Difference]: Without dead ends: 57 [2020-12-23 16:49:02,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:49:02,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-23 16:49:02,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-12-23 16:49:02,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-23 16:49:02,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-12-23 16:49:02,273 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 23 [2020-12-23 16:49:02,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:02,273 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-12-23 16:49:02,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:49:02,273 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-12-23 16:49:02,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 16:49:02,274 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:02,274 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:02,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 16:49:02,274 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:02,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:02,275 INFO L82 PathProgramCache]: Analyzing trace with hash -2103285548, now seen corresponding path program 1 times [2020-12-23 16:49:02,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:02,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339546679] [2020-12-23 16:49:02,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:02,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:02,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339546679] [2020-12-23 16:49:02,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:02,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 16:49:02,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757370616] [2020-12-23 16:49:02,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 16:49:02,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:02,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 16:49:02,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:49:02,412 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 8 states. [2020-12-23 16:49:02,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:02,567 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2020-12-23 16:49:02,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 16:49:02,567 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-12-23 16:49:02,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:02,568 INFO L225 Difference]: With dead ends: 78 [2020-12-23 16:49:02,568 INFO L226 Difference]: Without dead ends: 52 [2020-12-23 16:49:02,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-23 16:49:02,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-23 16:49:02,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-23 16:49:02,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-23 16:49:02,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-12-23 16:49:02,571 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 25 [2020-12-23 16:49:02,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:02,571 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-12-23 16:49:02,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 16:49:02,571 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-12-23 16:49:02,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 16:49:02,572 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:02,572 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:02,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 16:49:02,572 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:02,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:02,573 INFO L82 PathProgramCache]: Analyzing trace with hash 386243414, now seen corresponding path program 1 times [2020-12-23 16:49:02,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:02,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769988678] [2020-12-23 16:49:02,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:02,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:02,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769988678] [2020-12-23 16:49:02,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:02,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 16:49:02,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924385253] [2020-12-23 16:49:02,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 16:49:02,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:02,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 16:49:02,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-23 16:49:02,749 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 9 states. [2020-12-23 16:49:02,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:02,934 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2020-12-23 16:49:02,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 16:49:02,934 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-12-23 16:49:02,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:02,935 INFO L225 Difference]: With dead ends: 81 [2020-12-23 16:49:02,935 INFO L226 Difference]: Without dead ends: 60 [2020-12-23 16:49:02,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-23 16:49:02,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-23 16:49:02,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-12-23 16:49:02,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 16:49:02,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-12-23 16:49:02,937 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 25 [2020-12-23 16:49:02,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:02,937 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-12-23 16:49:02,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 16:49:02,938 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-12-23 16:49:02,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 16:49:02,938 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:02,938 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 16:49:02,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 16:49:02,939 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:02,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:02,939 INFO L82 PathProgramCache]: Analyzing trace with hash 235047385, now seen corresponding path program 1 times [2020-12-23 16:49:02,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:02,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281679408] [2020-12-23 16:49:02,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:03,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:03,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281679408] [2020-12-23 16:49:03,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966861862] [2020-12-23 16:49:03,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:03,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 16:49:03,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:03,122 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_24|], 1=[|v_#valid_31|]} [2020-12-23 16:49:03,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:49:03,127 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-23 16:49:03,128 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:03,137 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:03,144 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:49:03,148 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:03,156 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:03,159 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:03,160 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2020-12-23 16:49:03,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:03,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:03,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2020-12-23 16:49:03,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104395562] [2020-12-23 16:49:03,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 16:49:03,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:03,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 16:49:03,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-12-23 16:49:03,277 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 12 states. [2020-12-23 16:49:03,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:03,516 INFO L93 Difference]: Finished difference Result 78 states and 84 transitions. [2020-12-23 16:49:03,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 16:49:03,517 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2020-12-23 16:49:03,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:03,517 INFO L225 Difference]: With dead ends: 78 [2020-12-23 16:49:03,517 INFO L226 Difference]: Without dead ends: 78 [2020-12-23 16:49:03,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-12-23 16:49:03,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-23 16:49:03,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 66. [2020-12-23 16:49:03,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 16:49:03,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2020-12-23 16:49:03,520 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 29 [2020-12-23 16:49:03,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:03,520 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2020-12-23 16:49:03,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 16:49:03,521 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2020-12-23 16:49:03,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 16:49:03,521 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:03,521 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 16:49:03,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:03,736 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:03,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:03,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1303465643, now seen corresponding path program 1 times [2020-12-23 16:49:03,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:03,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723085772] [2020-12-23 16:49:03,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:49:03,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723085772] [2020-12-23 16:49:03,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:03,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-23 16:49:03,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156438808] [2020-12-23 16:49:03,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 16:49:03,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:03,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 16:49:03,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-12-23 16:49:03,929 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand 12 states. [2020-12-23 16:49:04,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:04,203 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2020-12-23 16:49:04,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 16:49:04,204 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-12-23 16:49:04,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:04,205 INFO L225 Difference]: With dead ends: 80 [2020-12-23 16:49:04,205 INFO L226 Difference]: Without dead ends: 58 [2020-12-23 16:49:04,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-12-23 16:49:04,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-23 16:49:04,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-12-23 16:49:04,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-23 16:49:04,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2020-12-23 16:49:04,207 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 30 [2020-12-23 16:49:04,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:04,208 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2020-12-23 16:49:04,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 16:49:04,208 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2020-12-23 16:49:04,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 16:49:04,208 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:04,208 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 16:49:04,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-23 16:49:04,209 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:04,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:04,209 INFO L82 PathProgramCache]: Analyzing trace with hash 619762391, now seen corresponding path program 1 times [2020-12-23 16:49:04,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:04,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661206493] [2020-12-23 16:49:04,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:49:04,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661206493] [2020-12-23 16:49:04,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:04,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-23 16:49:04,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680795209] [2020-12-23 16:49:04,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-23 16:49:04,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:04,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-23 16:49:04,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-12-23 16:49:04,444 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand 14 states. [2020-12-23 16:49:04,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:04,841 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2020-12-23 16:49:04,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 16:49:04,845 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 30 [2020-12-23 16:49:04,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:04,846 INFO L225 Difference]: With dead ends: 76 [2020-12-23 16:49:04,846 INFO L226 Difference]: Without dead ends: 62 [2020-12-23 16:49:04,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2020-12-23 16:49:04,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-23 16:49:04,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2020-12-23 16:49:04,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-23 16:49:04,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2020-12-23 16:49:04,849 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 30 [2020-12-23 16:49:04,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:04,849 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2020-12-23 16:49:04,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-23 16:49:04,849 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2020-12-23 16:49:04,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 16:49:04,849 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:04,850 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 16:49:04,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-23 16:49:04,850 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:04,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:04,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1945235956, now seen corresponding path program 1 times [2020-12-23 16:49:04,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:04,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91090248] [2020-12-23 16:49:04,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:04,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:49:04,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91090248] [2020-12-23 16:49:04,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475633084] [2020-12-23 16:49:04,998 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 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 [2020-12-23 16:49:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:05,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 16:49:05,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:05,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:49:05,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:05,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2020-12-23 16:49:05,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653698650] [2020-12-23 16:49:05,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-23 16:49:05,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:05,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-23 16:49:05,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-12-23 16:49:05,225 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 14 states. [2020-12-23 16:49:05,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:05,399 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2020-12-23 16:49:05,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 16:49:05,399 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-12-23 16:49:05,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:05,400 INFO L225 Difference]: With dead ends: 66 [2020-12-23 16:49:05,400 INFO L226 Difference]: Without dead ends: 62 [2020-12-23 16:49:05,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-12-23 16:49:05,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-23 16:49:05,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2020-12-23 16:49:05,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-23 16:49:05,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-12-23 16:49:05,402 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 34 [2020-12-23 16:49:05,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:05,403 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-12-23 16:49:05,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-23 16:49:05,403 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-12-23 16:49:05,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-23 16:49:05,403 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:05,404 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:05,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:05,618 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:05,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:05,619 INFO L82 PathProgramCache]: Analyzing trace with hash -871868475, now seen corresponding path program 1 times [2020-12-23 16:49:05,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:05,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046444231] [2020-12-23 16:49:05,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:05,990 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:49:05,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046444231] [2020-12-23 16:49:05,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132054688] [2020-12-23 16:49:05,990 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 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 [2020-12-23 16:49:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:06,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 16:49:06,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:06,212 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-23 16:49:06,212 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:06,219 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:06,222 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:49:06,222 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2020-12-23 16:49:06,752 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 16:49:06,758 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 16:49:06,760 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 16:49:06,990 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 16:49:07,006 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:07,007 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 40 [2020-12-23 16:49:07,009 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:07,020 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:07,024 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:07,024 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:46, output treesize:3 [2020-12-23 16:49:07,103 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:49:07,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:07,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 26 [2020-12-23 16:49:07,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346445743] [2020-12-23 16:49:07,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-23 16:49:07,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:07,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-23 16:49:07,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2020-12-23 16:49:07,106 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 26 states. [2020-12-23 16:49:08,729 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-12-23 16:49:08,944 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-12-23 16:49:09,206 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-12-23 16:49:10,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:10,440 INFO L93 Difference]: Finished difference Result 156 states and 160 transitions. [2020-12-23 16:49:10,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-12-23 16:49:10,440 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 43 [2020-12-23 16:49:10,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:10,441 INFO L225 Difference]: With dead ends: 156 [2020-12-23 16:49:10,441 INFO L226 Difference]: Without dead ends: 71 [2020-12-23 16:49:10,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=659, Invalid=3001, Unknown=0, NotChecked=0, Total=3660 [2020-12-23 16:49:10,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-23 16:49:10,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2020-12-23 16:49:10,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-23 16:49:10,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2020-12-23 16:49:10,445 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 43 [2020-12-23 16:49:10,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:10,446 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2020-12-23 16:49:10,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-12-23 16:49:10,446 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2020-12-23 16:49:10,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-23 16:49:10,446 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:10,446 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:10,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-23 16:49:10,657 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:10,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:10,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1808120587, now seen corresponding path program 2 times [2020-12-23 16:49:10,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:10,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796832079] [2020-12-23 16:49:10,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:10,829 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 16:49:10,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796832079] [2020-12-23 16:49:10,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858496767] [2020-12-23 16:49:10,830 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 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 [2020-12-23 16:49:10,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:49:10,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:10,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 16:49:10,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:11,074 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 16:49:11,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:11,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2020-12-23 16:49:11,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793604226] [2020-12-23 16:49:11,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 16:49:11,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:11,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 16:49:11,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-12-23 16:49:11,080 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand 15 states. [2020-12-23 16:49:11,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:11,349 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2020-12-23 16:49:11,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 16:49:11,350 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-12-23 16:49:11,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:11,351 INFO L225 Difference]: With dead ends: 83 [2020-12-23 16:49:11,351 INFO L226 Difference]: Without dead ends: 83 [2020-12-23 16:49:11,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-12-23 16:49:11,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-23 16:49:11,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2020-12-23 16:49:11,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-23 16:49:11,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2020-12-23 16:49:11,354 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 51 [2020-12-23 16:49:11,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:11,354 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2020-12-23 16:49:11,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 16:49:11,355 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2020-12-23 16:49:11,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-23 16:49:11,355 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:11,355 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:11,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:11,570 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:11,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:11,571 INFO L82 PathProgramCache]: Analyzing trace with hash 217163363, now seen corresponding path program 2 times [2020-12-23 16:49:11,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:11,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537986862] [2020-12-23 16:49:11,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:11,740 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 16:49:11,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537986862] [2020-12-23 16:49:11,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419524882] [2020-12-23 16:49:11,741 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 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 [2020-12-23 16:49:11,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:49:11,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:11,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 16:49:11,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 16:49:11,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:11,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2020-12-23 16:49:11,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397531231] [2020-12-23 16:49:11,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 16:49:11,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:11,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 16:49:11,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-12-23 16:49:11,974 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 16 states. [2020-12-23 16:49:12,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:12,267 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2020-12-23 16:49:12,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 16:49:12,267 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 52 [2020-12-23 16:49:12,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:12,268 INFO L225 Difference]: With dead ends: 81 [2020-12-23 16:49:12,268 INFO L226 Difference]: Without dead ends: 77 [2020-12-23 16:49:12,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-12-23 16:49:12,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-23 16:49:12,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2020-12-23 16:49:12,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-23 16:49:12,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-12-23 16:49:12,271 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 52 [2020-12-23 16:49:12,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:12,272 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-12-23 16:49:12,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 16:49:12,272 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-12-23 16:49:12,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-23 16:49:12,272 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:12,273 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:12,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-23 16:49:12,486 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:12,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:12,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1900752950, now seen corresponding path program 3 times [2020-12-23 16:49:12,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:12,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535159513] [2020-12-23 16:49:12,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:12,760 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 9 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 16:49:12,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535159513] [2020-12-23 16:49:12,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827098115] [2020-12-23 16:49:12,761 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 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 [2020-12-23 16:49:12,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-23 16:49:12,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:12,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-23 16:49:12,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:12,884 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:12,885 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-23 16:49:12,886 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:12,906 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-12-23 16:49:12,909 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:12,909 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2020-12-23 16:49:13,073 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 16:49:13,074 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:13,079 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:13,080 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:13,080 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2020-12-23 16:49:13,331 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2020-12-23 16:49:13,333 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:49:13,345 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:13,349 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-23 16:49:13,349 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:41, output treesize:35 [2020-12-23 16:49:13,403 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 16:49:13,405 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 16:49:13,406 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 16:49:13,607 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 16:49:13,622 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:13,622 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 39 [2020-12-23 16:49:13,624 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:13,631 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:13,633 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:13,633 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:39, output treesize:3 [2020-12-23 16:49:13,653 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 27 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 16:49:13,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:13,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18] total 27 [2020-12-23 16:49:13,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137053186] [2020-12-23 16:49:13,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-23 16:49:13,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:13,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-23 16:49:13,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2020-12-23 16:49:13,656 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 27 states. [2020-12-23 16:49:14,578 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-12-23 16:49:15,497 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-12-23 16:49:15,718 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-12-23 16:49:15,951 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-12-23 16:49:16,200 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2020-12-23 16:49:16,798 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-12-23 16:49:17,113 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-12-23 16:49:17,326 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-12-23 16:49:17,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:17,933 INFO L93 Difference]: Finished difference Result 208 states and 212 transitions. [2020-12-23 16:49:17,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-12-23 16:49:17,934 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 61 [2020-12-23 16:49:17,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:17,934 INFO L225 Difference]: With dead ends: 208 [2020-12-23 16:49:17,934 INFO L226 Difference]: Without dead ends: 89 [2020-12-23 16:49:17,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=660, Invalid=3372, Unknown=0, NotChecked=0, Total=4032 [2020-12-23 16:49:17,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-23 16:49:17,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2020-12-23 16:49:17,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-23 16:49:17,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2020-12-23 16:49:17,939 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 61 [2020-12-23 16:49:17,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:17,939 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2020-12-23 16:49:17,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-23 16:49:17,939 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2020-12-23 16:49:17,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 16:49:17,940 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:17,940 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:18,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-23 16:49:18,155 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:18,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:18,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1604309508, now seen corresponding path program 4 times [2020-12-23 16:49:18,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:18,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137026245] [2020-12-23 16:49:18,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:18,334 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 1 proven. 53 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-23 16:49:18,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137026245] [2020-12-23 16:49:18,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280908745] [2020-12-23 16:49:18,334 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 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 [2020-12-23 16:49:18,446 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 16:49:18,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:18,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 16:49:18,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:18,461 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_26|], 1=[|v_#valid_32|]} [2020-12-23 16:49:18,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:49:18,474 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-23 16:49:18,475 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:18,484 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:18,489 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:49:18,491 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:18,502 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:18,506 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:18,506 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:16 [2020-12-23 16:49:18,812 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 6 proven. 48 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-23 16:49:18,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:18,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2020-12-23 16:49:18,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43152195] [2020-12-23 16:49:18,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-23 16:49:18,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:18,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-23 16:49:18,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-12-23 16:49:18,814 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand 19 states. [2020-12-23 16:49:19,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:19,377 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2020-12-23 16:49:19,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 16:49:19,378 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 69 [2020-12-23 16:49:19,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:19,379 INFO L225 Difference]: With dead ends: 101 [2020-12-23 16:49:19,380 INFO L226 Difference]: Without dead ends: 101 [2020-12-23 16:49:19,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=570, Unknown=0, NotChecked=0, Total=702 [2020-12-23 16:49:19,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-23 16:49:19,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2020-12-23 16:49:19,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-23 16:49:19,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2020-12-23 16:49:19,384 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 69 [2020-12-23 16:49:19,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:19,385 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2020-12-23 16:49:19,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-23 16:49:19,385 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2020-12-23 16:49:19,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 16:49:19,386 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:19,386 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:19,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-23 16:49:19,601 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:19,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:19,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1806012818, now seen corresponding path program 3 times [2020-12-23 16:49:19,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:19,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638577774] [2020-12-23 16:49:19,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:19,812 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 1 proven. 56 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-23 16:49:19,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638577774] [2020-12-23 16:49:19,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898446950] [2020-12-23 16:49:19,813 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 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 [2020-12-23 16:49:19,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-23 16:49:19,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:19,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 16:49:19,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:20,205 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-23 16:49:20,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:20,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2020-12-23 16:49:20,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381362144] [2020-12-23 16:49:20,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-23 16:49:20,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:20,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-23 16:49:20,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2020-12-23 16:49:20,207 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand 22 states. [2020-12-23 16:49:20,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:20,549 INFO L93 Difference]: Finished difference Result 99 states and 103 transitions. [2020-12-23 16:49:20,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 16:49:20,550 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 70 [2020-12-23 16:49:20,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:20,551 INFO L225 Difference]: With dead ends: 99 [2020-12-23 16:49:20,551 INFO L226 Difference]: Without dead ends: 95 [2020-12-23 16:49:20,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-12-23 16:49:20,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-12-23 16:49:20,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2020-12-23 16:49:20,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-23 16:49:20,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2020-12-23 16:49:20,555 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 70 [2020-12-23 16:49:20,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:20,555 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2020-12-23 16:49:20,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-23 16:49:20,555 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2020-12-23 16:49:20,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 16:49:20,556 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:20,556 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:20,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-23 16:49:20,772 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:20,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:20,773 INFO L82 PathProgramCache]: Analyzing trace with hash 810248679, now seen corresponding path program 5 times [2020-12-23 16:49:20,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:20,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350091384] [2020-12-23 16:49:20,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 75 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-23 16:49:21,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350091384] [2020-12-23 16:49:21,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191436334] [2020-12-23 16:49:21,068 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 [2020-12-23 16:49:21,187 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-23 16:49:21,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:21,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-23 16:49:21,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:21,418 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-23 16:49:21,419 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:21,425 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:21,426 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:49:21,426 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2020-12-23 16:49:21,920 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 16:49:21,922 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 16:49:22,078 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:49:22,080 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:22,081 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:22,082 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:22,082 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-23 16:49:22,115 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 75 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-23 16:49:22,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:22,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19] total 29 [2020-12-23 16:49:22,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222356059] [2020-12-23 16:49:22,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-23 16:49:22,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:22,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-23 16:49:22,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=753, Unknown=0, NotChecked=0, Total=812 [2020-12-23 16:49:22,118 INFO L87 Difference]: Start difference. First operand 93 states and 96 transitions. Second operand 29 states. [2020-12-23 16:49:24,532 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2020-12-23 16:49:24,726 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-12-23 16:49:24,932 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-12-23 16:49:26,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:26,130 INFO L93 Difference]: Finished difference Result 260 states and 264 transitions. [2020-12-23 16:49:26,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-12-23 16:49:26,130 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 79 [2020-12-23 16:49:26,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:26,131 INFO L225 Difference]: With dead ends: 260 [2020-12-23 16:49:26,131 INFO L226 Difference]: Without dead ends: 107 [2020-12-23 16:49:26,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=539, Invalid=4017, Unknown=0, NotChecked=0, Total=4556 [2020-12-23 16:49:26,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-23 16:49:26,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 101. [2020-12-23 16:49:26,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-23 16:49:26,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 104 transitions. [2020-12-23 16:49:26,136 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 104 transitions. Word has length 79 [2020-12-23 16:49:26,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:26,137 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 104 transitions. [2020-12-23 16:49:26,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-12-23 16:49:26,137 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 104 transitions. [2020-12-23 16:49:26,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-23 16:49:26,137 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:26,138 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:26,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:26,352 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:26,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:26,353 INFO L82 PathProgramCache]: Analyzing trace with hash 136208941, now seen corresponding path program 6 times [2020-12-23 16:49:26,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:26,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679540444] [2020-12-23 16:49:26,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:26,580 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 6 proven. 94 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-23 16:49:26,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679540444] [2020-12-23 16:49:26,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082418299] [2020-12-23 16:49:26,581 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 [2020-12-23 16:49:26,740 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-12-23 16:49:26,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:26,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 16:49:26,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 15 proven. 85 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-23 16:49:27,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:27,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2020-12-23 16:49:27,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707602285] [2020-12-23 16:49:27,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-23 16:49:27,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:27,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-23 16:49:27,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2020-12-23 16:49:27,070 INFO L87 Difference]: Start difference. First operand 101 states and 104 transitions. Second operand 25 states. [2020-12-23 16:49:27,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:27,581 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2020-12-23 16:49:27,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 16:49:27,582 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 87 [2020-12-23 16:49:27,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:27,583 INFO L225 Difference]: With dead ends: 119 [2020-12-23 16:49:27,584 INFO L226 Difference]: Without dead ends: 119 [2020-12-23 16:49:27,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=216, Invalid=776, Unknown=0, NotChecked=0, Total=992 [2020-12-23 16:49:27,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-12-23 16:49:27,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 113. [2020-12-23 16:49:27,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-12-23 16:49:27,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 119 transitions. [2020-12-23 16:49:27,589 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 119 transitions. Word has length 87 [2020-12-23 16:49:27,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:27,589 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 119 transitions. [2020-12-23 16:49:27,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-23 16:49:27,589 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 119 transitions. [2020-12-23 16:49:27,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-23 16:49:27,590 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:27,590 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:27,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:27,805 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:27,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:27,805 INFO L82 PathProgramCache]: Analyzing trace with hash -72490111, now seen corresponding path program 4 times [2020-12-23 16:49:27,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:27,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926351177] [2020-12-23 16:49:27,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:28,068 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 6 proven. 98 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-23 16:49:28,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926351177] [2020-12-23 16:49:28,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903057261] [2020-12-23 16:49:28,069 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 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 [2020-12-23 16:49:28,248 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 16:49:28,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:28,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-23 16:49:28,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:28,511 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 15 proven. 89 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-23 16:49:28,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:28,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2020-12-23 16:49:28,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420357701] [2020-12-23 16:49:28,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-23 16:49:28,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:28,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-23 16:49:28,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2020-12-23 16:49:28,515 INFO L87 Difference]: Start difference. First operand 113 states and 119 transitions. Second operand 22 states. [2020-12-23 16:49:28,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:28,965 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2020-12-23 16:49:28,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 16:49:28,966 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 88 [2020-12-23 16:49:28,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:28,967 INFO L225 Difference]: With dead ends: 117 [2020-12-23 16:49:28,967 INFO L226 Difference]: Without dead ends: 113 [2020-12-23 16:49:28,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2020-12-23 16:49:28,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-23 16:49:28,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2020-12-23 16:49:28,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-23 16:49:28,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 114 transitions. [2020-12-23 16:49:28,971 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 114 transitions. Word has length 88 [2020-12-23 16:49:28,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:28,971 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 114 transitions. [2020-12-23 16:49:28,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-23 16:49:28,971 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 114 transitions. [2020-12-23 16:49:28,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-23 16:49:28,972 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:28,972 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:29,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-12-23 16:49:29,188 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:29,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:29,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1990120664, now seen corresponding path program 7 times [2020-12-23 16:49:29,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:29,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273960095] [2020-12-23 16:49:29,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:29,591 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 15 proven. 128 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-23 16:49:29,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273960095] [2020-12-23 16:49:29,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787230556] [2020-12-23 16:49:29,591 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 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 [2020-12-23 16:49:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:29,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-23 16:49:29,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:29,964 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-23 16:49:29,965 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:29,971 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:29,972 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:49:29,973 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2020-12-23 16:49:30,664 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 16:49:30,666 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 16:49:30,840 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:49:30,841 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:30,843 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:30,843 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:30,844 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-23 16:49:30,878 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 15 proven. 128 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-23 16:49:30,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:30,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21] total 33 [2020-12-23 16:49:30,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296947904] [2020-12-23 16:49:30,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-23 16:49:30,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:30,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-23 16:49:30,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=989, Unknown=0, NotChecked=0, Total=1056 [2020-12-23 16:49:30,880 INFO L87 Difference]: Start difference. First operand 111 states and 114 transitions. Second operand 33 states. [2020-12-23 16:49:34,414 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-12-23 16:49:34,630 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-12-23 16:49:35,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:35,934 INFO L93 Difference]: Finished difference Result 312 states and 316 transitions. [2020-12-23 16:49:35,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-12-23 16:49:35,934 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 97 [2020-12-23 16:49:35,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:35,936 INFO L225 Difference]: With dead ends: 312 [2020-12-23 16:49:35,936 INFO L226 Difference]: Without dead ends: 125 [2020-12-23 16:49:35,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=589, Invalid=5111, Unknown=0, NotChecked=0, Total=5700 [2020-12-23 16:49:35,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-23 16:49:35,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2020-12-23 16:49:35,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-12-23 16:49:35,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 122 transitions. [2020-12-23 16:49:35,942 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 122 transitions. Word has length 97 [2020-12-23 16:49:35,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:35,942 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 122 transitions. [2020-12-23 16:49:35,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-12-23 16:49:35,942 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 122 transitions. [2020-12-23 16:49:35,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 16:49:35,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:35,943 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:36,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:36,157 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:36,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:36,158 INFO L82 PathProgramCache]: Analyzing trace with hash -2118244450, now seen corresponding path program 8 times [2020-12-23 16:49:36,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:36,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65102033] [2020-12-23 16:49:36,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:36,456 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 15 proven. 145 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-12-23 16:49:36,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65102033] [2020-12-23 16:49:36,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580703821] [2020-12-23 16:49:36,456 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 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 [2020-12-23 16:49:36,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:49:36,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:36,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 16:49:36,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:36,924 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 28 proven. 132 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-12-23 16:49:36,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:36,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 23 [2020-12-23 16:49:36,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389683723] [2020-12-23 16:49:36,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-23 16:49:36,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:36,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-23 16:49:36,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2020-12-23 16:49:36,926 INFO L87 Difference]: Start difference. First operand 119 states and 122 transitions. Second operand 24 states. [2020-12-23 16:49:37,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:37,624 INFO L93 Difference]: Finished difference Result 137 states and 141 transitions. [2020-12-23 16:49:37,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 16:49:37,624 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 105 [2020-12-23 16:49:37,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:37,626 INFO L225 Difference]: With dead ends: 137 [2020-12-23 16:49:37,626 INFO L226 Difference]: Without dead ends: 137 [2020-12-23 16:49:37,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=220, Invalid=772, Unknown=0, NotChecked=0, Total=992 [2020-12-23 16:49:37,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-12-23 16:49:37,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 131. [2020-12-23 16:49:37,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-12-23 16:49:37,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 137 transitions. [2020-12-23 16:49:37,630 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 137 transitions. Word has length 105 [2020-12-23 16:49:37,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:37,630 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 137 transitions. [2020-12-23 16:49:37,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-23 16:49:37,630 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 137 transitions. [2020-12-23 16:49:37,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-23 16:49:37,631 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:37,631 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:37,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-23 16:49:37,832 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:37,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:37,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1241068496, now seen corresponding path program 5 times [2020-12-23 16:49:37,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:37,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576606601] [2020-12-23 16:49:37,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 15 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-12-23 16:49:38,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576606601] [2020-12-23 16:49:38,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975595594] [2020-12-23 16:49:38,161 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 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 [2020-12-23 16:49:38,397 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-12-23 16:49:38,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:38,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 42 conjunts are in the unsatisfiable core [2020-12-23 16:49:38,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:38,425 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:38,425 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-23 16:49:38,427 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:38,456 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-12-23 16:49:38,459 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:38,460 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2020-12-23 16:49:38,854 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 28 proven. 137 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-12-23 16:49:38,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:38,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 21 [2020-12-23 16:49:38,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036077418] [2020-12-23 16:49:38,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-23 16:49:38,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:38,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-23 16:49:38,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2020-12-23 16:49:38,856 INFO L87 Difference]: Start difference. First operand 131 states and 137 transitions. Second operand 22 states. [2020-12-23 16:49:39,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:39,379 INFO L93 Difference]: Finished difference Result 135 states and 139 transitions. [2020-12-23 16:49:39,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 16:49:39,379 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 106 [2020-12-23 16:49:39,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:39,380 INFO L225 Difference]: With dead ends: 135 [2020-12-23 16:49:39,380 INFO L226 Difference]: Without dead ends: 131 [2020-12-23 16:49:39,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2020-12-23 16:49:39,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-23 16:49:39,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2020-12-23 16:49:39,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-12-23 16:49:39,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2020-12-23 16:49:39,384 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 106 [2020-12-23 16:49:39,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:39,384 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2020-12-23 16:49:39,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-23 16:49:39,385 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2020-12-23 16:49:39,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-23 16:49:39,386 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:39,386 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:39,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:39,598 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:39,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:39,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1811890441, now seen corresponding path program 9 times [2020-12-23 16:49:39,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:39,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137293650] [2020-12-23 16:49:39,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:40,067 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 18 proven. 195 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-12-23 16:49:40,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137293650] [2020-12-23 16:49:40,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876113074] [2020-12-23 16:49:40,068 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 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 [2020-12-23 16:49:40,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-23 16:49:40,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:40,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 72 conjunts are in the unsatisfiable core [2020-12-23 16:49:40,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:40,979 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-23 16:49:40,980 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:40,989 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:40,992 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:49:40,992 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2020-12-23 16:49:41,790 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 16:49:41,791 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 16:49:42,054 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 16:49:42,072 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:42,072 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 39 [2020-12-23 16:49:42,075 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:42,081 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:42,082 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:42,082 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:3 [2020-12-23 16:49:42,160 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 18 proven. 239 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:49:42,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:42,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 28] total 43 [2020-12-23 16:49:42,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853006665] [2020-12-23 16:49:42,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-12-23 16:49:42,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:42,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-12-23 16:49:42,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1705, Unknown=0, NotChecked=0, Total=1806 [2020-12-23 16:49:42,163 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand 43 states. [2020-12-23 16:49:47,447 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-12-23 16:49:47,701 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-12-23 16:49:47,966 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-12-23 16:49:49,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:49,623 INFO L93 Difference]: Finished difference Result 364 states and 368 transitions. [2020-12-23 16:49:49,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-12-23 16:49:49,623 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 115 [2020-12-23 16:49:49,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:49,625 INFO L225 Difference]: With dead ends: 364 [2020-12-23 16:49:49,625 INFO L226 Difference]: Without dead ends: 143 [2020-12-23 16:49:49,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1519 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=787, Invalid=8333, Unknown=0, NotChecked=0, Total=9120 [2020-12-23 16:49:49,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-12-23 16:49:49,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 137. [2020-12-23 16:49:49,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-12-23 16:49:49,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 140 transitions. [2020-12-23 16:49:49,632 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 140 transitions. Word has length 115 [2020-12-23 16:49:49,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:49,633 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 140 transitions. [2020-12-23 16:49:49,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-12-23 16:49:49,633 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 140 transitions. [2020-12-23 16:49:49,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-23 16:49:49,634 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:49,634 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:49,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-23 16:49:49,848 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:49,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:49,848 INFO L82 PathProgramCache]: Analyzing trace with hash 740380239, now seen corresponding path program 10 times [2020-12-23 16:49:49,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:49,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664609868] [2020-12-23 16:49:49,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:50,226 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 28 proven. 206 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-23 16:49:50,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664609868] [2020-12-23 16:49:50,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770963194] [2020-12-23 16:49:50,227 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 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 [2020-12-23 16:49:50,492 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 16:49:50,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:50,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 42 conjunts are in the unsatisfiable core [2020-12-23 16:49:50,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:50,930 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 45 proven. 189 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-23 16:49:50,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:50,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 26 [2020-12-23 16:49:50,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264346656] [2020-12-23 16:49:50,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-23 16:49:50,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:50,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-23 16:49:50,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2020-12-23 16:49:50,932 INFO L87 Difference]: Start difference. First operand 137 states and 140 transitions. Second operand 27 states. [2020-12-23 16:49:51,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:51,801 INFO L93 Difference]: Finished difference Result 155 states and 159 transitions. [2020-12-23 16:49:51,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 16:49:51,801 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 123 [2020-12-23 16:49:51,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:51,802 INFO L225 Difference]: With dead ends: 155 [2020-12-23 16:49:51,803 INFO L226 Difference]: Without dead ends: 155 [2020-12-23 16:49:51,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=277, Invalid=983, Unknown=0, NotChecked=0, Total=1260 [2020-12-23 16:49:51,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-12-23 16:49:51,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 149. [2020-12-23 16:49:51,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-12-23 16:49:51,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 155 transitions. [2020-12-23 16:49:51,807 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 155 transitions. Word has length 123 [2020-12-23 16:49:51,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:51,807 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 155 transitions. [2020-12-23 16:49:51,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-23 16:49:51,807 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 155 transitions. [2020-12-23 16:49:51,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-12-23 16:49:51,808 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:51,808 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:52,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-23 16:49:52,010 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:52,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:52,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1476950943, now seen corresponding path program 6 times [2020-12-23 16:49:52,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:52,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913334493] [2020-12-23 16:49:52,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:52,436 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 28 proven. 212 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-23 16:49:52,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913334493] [2020-12-23 16:49:52,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142529772] [2020-12-23 16:49:52,437 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 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 [2020-12-23 16:49:52,691 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-12-23 16:49:52,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:52,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-23 16:49:52,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:52,720 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:52,720 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-23 16:49:52,722 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:52,746 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-12-23 16:49:52,749 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:52,749 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2020-12-23 16:49:52,848 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2020-12-23 16:49:52,849 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:52,857 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:52,858 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:49:52,858 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:19 [2020-12-23 16:49:53,435 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:53,435 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 52 [2020-12-23 16:49:53,437 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:53,465 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:53,468 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 16:49:53,472 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:53,472 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:47, output treesize:29 [2020-12-23 16:49:53,526 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 16:49:53,527 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 16:49:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 25 proven. 34 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-12-23 16:49:53,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:53,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 27 [2020-12-23 16:49:53,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135308440] [2020-12-23 16:49:53,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-23 16:49:53,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:53,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-23 16:49:53,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2020-12-23 16:49:53,686 INFO L87 Difference]: Start difference. First operand 149 states and 155 transitions. Second operand 28 states. [2020-12-23 16:49:54,397 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-12-23 16:49:54,930 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-12-23 16:49:55,463 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-12-23 16:49:56,001 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-12-23 16:49:56,546 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-12-23 16:49:57,084 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-12-23 16:49:57,626 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-23 16:49:58,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:58,009 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2020-12-23 16:49:58,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-12-23 16:49:58,010 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 124 [2020-12-23 16:49:58,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:58,014 INFO L225 Difference]: With dead ends: 147 [2020-12-23 16:49:58,014 INFO L226 Difference]: Without dead ends: 143 [2020-12-23 16:49:58,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=918, Invalid=3504, Unknown=0, NotChecked=0, Total=4422 [2020-12-23 16:49:58,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-12-23 16:49:58,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-12-23 16:49:58,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-23 16:49:58,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 146 transitions. [2020-12-23 16:49:58,019 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 146 transitions. Word has length 124 [2020-12-23 16:49:58,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:58,019 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 146 transitions. [2020-12-23 16:49:58,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-23 16:49:58,019 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 146 transitions. [2020-12-23 16:49:58,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-23 16:49:58,021 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:58,021 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:58,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-12-23 16:49:58,236 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:49:58,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:58,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1689616774, now seen corresponding path program 11 times [2020-12-23 16:49:58,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:58,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938101402] [2020-12-23 16:49:58,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:58,828 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 21 proven. 276 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-23 16:49:58,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938101402] [2020-12-23 16:49:58,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355993374] [2020-12-23 16:49:58,828 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 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 [2020-12-23 16:49:59,043 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-12-23 16:49:59,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:59,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 60 conjunts are in the unsatisfiable core [2020-12-23 16:49:59,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:59,441 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-23 16:49:59,442 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:59,451 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:59,452 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:49:59,452 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2020-12-23 16:50:00,560 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 16:50:00,562 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 16:50:00,795 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:50:00,796 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:00,798 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:00,799 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:00,799 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-23 16:50:00,874 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 21 proven. 276 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-23 16:50:00,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:50:00,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25] total 41 [2020-12-23 16:50:00,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007004447] [2020-12-23 16:50:00,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-12-23 16:50:00,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:50:00,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-12-23 16:50:00,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1557, Unknown=0, NotChecked=0, Total=1640 [2020-12-23 16:50:00,876 INFO L87 Difference]: Start difference. First operand 143 states and 146 transitions. Second operand 41 states. [2020-12-23 16:50:06,685 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-12-23 16:50:06,937 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-12-23 16:50:08,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:50:08,437 INFO L93 Difference]: Finished difference Result 412 states and 416 transitions. [2020-12-23 16:50:08,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-12-23 16:50:08,438 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 133 [2020-12-23 16:50:08,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:50:08,439 INFO L225 Difference]: With dead ends: 412 [2020-12-23 16:50:08,439 INFO L226 Difference]: Without dead ends: 157 [2020-12-23 16:50:08,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 114 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1293 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=689, Invalid=7683, Unknown=0, NotChecked=0, Total=8372 [2020-12-23 16:50:08,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-12-23 16:50:08,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2020-12-23 16:50:08,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-12-23 16:50:08,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 154 transitions. [2020-12-23 16:50:08,445 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 154 transitions. Word has length 133 [2020-12-23 16:50:08,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:50:08,446 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 154 transitions. [2020-12-23 16:50:08,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-12-23 16:50:08,446 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 154 transitions. [2020-12-23 16:50:08,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-23 16:50:08,448 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:50:08,448 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:50:08,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-12-23 16:50:08,660 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:50:08,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:50:08,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1890736576, now seen corresponding path program 12 times [2020-12-23 16:50:08,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:50:08,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924204285] [2020-12-23 16:50:08,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:50:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:50:09,202 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 45 proven. 277 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-12-23 16:50:09,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924204285] [2020-12-23 16:50:09,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514926161] [2020-12-23 16:50:09,203 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 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 [2020-12-23 16:50:10,022 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-12-23 16:50:10,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:50:10,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 53 conjunts are in the unsatisfiable core [2020-12-23 16:50:10,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:50:10,036 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_29|], 1=[|v_#valid_33|]} [2020-12-23 16:50:10,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:50:10,041 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-23 16:50:10,042 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:10,054 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:10,060 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:50:10,063 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:10,074 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:10,075 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:10,076 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:16 [2020-12-23 16:50:11,109 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 66 proven. 256 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-12-23 16:50:11,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:50:11,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2020-12-23 16:50:11,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409436232] [2020-12-23 16:50:11,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-12-23 16:50:11,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:50:11,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-12-23 16:50:11,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1126, Unknown=0, NotChecked=0, Total=1260 [2020-12-23 16:50:11,111 INFO L87 Difference]: Start difference. First operand 151 states and 154 transitions. Second operand 36 states. [2020-12-23 16:50:12,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:50:12,854 INFO L93 Difference]: Finished difference Result 165 states and 169 transitions. [2020-12-23 16:50:12,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 16:50:12,858 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 141 [2020-12-23 16:50:12,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:50:12,859 INFO L225 Difference]: With dead ends: 165 [2020-12-23 16:50:12,859 INFO L226 Difference]: Without dead ends: 163 [2020-12-23 16:50:12,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=487, Invalid=2165, Unknown=0, NotChecked=0, Total=2652 [2020-12-23 16:50:12,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-23 16:50:12,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 161. [2020-12-23 16:50:12,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-12-23 16:50:12,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 164 transitions. [2020-12-23 16:50:12,863 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 164 transitions. Word has length 141 [2020-12-23 16:50:12,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:50:12,863 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 164 transitions. [2020-12-23 16:50:12,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-12-23 16:50:12,863 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 164 transitions. [2020-12-23 16:50:12,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-23 16:50:12,865 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:50:12,865 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:50:13,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-12-23 16:50:13,080 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:50:13,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:50:13,081 INFO L82 PathProgramCache]: Analyzing trace with hash -612213461, now seen corresponding path program 13 times [2020-12-23 16:50:13,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:50:13,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890142781] [2020-12-23 16:50:13,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:50:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:50:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 24 proven. 371 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-12-23 16:50:13,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890142781] [2020-12-23 16:50:13,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017724351] [2020-12-23 16:50:13,764 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 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 [2020-12-23 16:50:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:50:13,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 67 conjunts are in the unsatisfiable core [2020-12-23 16:50:13,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:50:14,569 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-23 16:50:14,570 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:14,581 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:14,583 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:50:14,584 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2020-12-23 16:50:16,247 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 16:50:16,249 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 16:50:16,250 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 16:50:16,626 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 16:50:16,643 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:16,644 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 40 [2020-12-23 16:50:16,645 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:16,658 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:16,661 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:16,662 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:46, output treesize:3 [2020-12-23 16:50:16,775 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 24 proven. 371 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-12-23 16:50:16,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:50:16,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 29] total 48 [2020-12-23 16:50:16,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298027418] [2020-12-23 16:50:16,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-12-23 16:50:16,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:50:16,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-12-23 16:50:16,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=2146, Unknown=0, NotChecked=0, Total=2256 [2020-12-23 16:50:16,777 INFO L87 Difference]: Start difference. First operand 161 states and 164 transitions. Second operand 48 states. [2020-12-23 16:50:25,532 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-12-23 16:50:25,875 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2020-12-23 16:50:26,274 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-12-23 16:50:28,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:50:28,494 INFO L93 Difference]: Finished difference Result 464 states and 468 transitions. [2020-12-23 16:50:28,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-12-23 16:50:28,495 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 151 [2020-12-23 16:50:28,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:50:28,496 INFO L225 Difference]: With dead ends: 464 [2020-12-23 16:50:28,496 INFO L226 Difference]: Without dead ends: 175 [2020-12-23 16:50:28,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2333 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=934, Invalid=11722, Unknown=0, NotChecked=0, Total=12656 [2020-12-23 16:50:28,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-12-23 16:50:28,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 169. [2020-12-23 16:50:28,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-12-23 16:50:28,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 172 transitions. [2020-12-23 16:50:28,503 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 172 transitions. Word has length 151 [2020-12-23 16:50:28,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:50:28,503 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 172 transitions. [2020-12-23 16:50:28,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-12-23 16:50:28,504 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 172 transitions. [2020-12-23 16:50:28,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-23 16:50:28,505 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:50:28,505 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:50:28,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:50:28,720 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:50:28,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:50:28,721 INFO L82 PathProgramCache]: Analyzing trace with hash 91029361, now seen corresponding path program 14 times [2020-12-23 16:50:28,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:50:28,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626867742] [2020-12-23 16:50:28,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:50:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:50:29,301 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 66 proven. 358 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-12-23 16:50:29,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626867742] [2020-12-23 16:50:29,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436114754] [2020-12-23 16:50:29,302 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 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 [2020-12-23 16:50:29,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:50:29,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:50:29,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 52 conjunts are in the unsatisfiable core [2020-12-23 16:50:29,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:50:30,161 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 91 proven. 333 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-12-23 16:50:30,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:50:30,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 32 [2020-12-23 16:50:30,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782271035] [2020-12-23 16:50:30,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-23 16:50:30,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:50:30,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-23 16:50:30,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=903, Unknown=0, NotChecked=0, Total=1056 [2020-12-23 16:50:30,164 INFO L87 Difference]: Start difference. First operand 169 states and 172 transitions. Second operand 33 states. [2020-12-23 16:50:31,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:50:31,395 INFO L93 Difference]: Finished difference Result 183 states and 187 transitions. [2020-12-23 16:50:31,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-23 16:50:31,397 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 159 [2020-12-23 16:50:31,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:50:31,398 INFO L225 Difference]: With dead ends: 183 [2020-12-23 16:50:31,398 INFO L226 Difference]: Without dead ends: 181 [2020-12-23 16:50:31,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=412, Invalid=1480, Unknown=0, NotChecked=0, Total=1892 [2020-12-23 16:50:31,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-12-23 16:50:31,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2020-12-23 16:50:31,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-12-23 16:50:31,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 182 transitions. [2020-12-23 16:50:31,403 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 182 transitions. Word has length 159 [2020-12-23 16:50:31,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:50:31,404 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 182 transitions. [2020-12-23 16:50:31,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-12-23 16:50:31,404 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 182 transitions. [2020-12-23 16:50:31,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-12-23 16:50:31,405 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:50:31,406 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:50:31,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-12-23 16:50:31,620 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:50:31,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:50:31,621 INFO L82 PathProgramCache]: Analyzing trace with hash 2026679580, now seen corresponding path program 15 times [2020-12-23 16:50:31,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:50:31,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050116578] [2020-12-23 16:50:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:50:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:50:32,540 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 27 proven. 480 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-12-23 16:50:32,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050116578] [2020-12-23 16:50:32,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770455110] [2020-12-23 16:50:32,541 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 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 [2020-12-23 16:50:33,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-12-23 16:50:33,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:50:33,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 94 conjunts are in the unsatisfiable core [2020-12-23 16:50:33,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:50:35,048 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-23 16:50:35,050 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:35,060 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:35,062 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:50:35,062 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2020-12-23 16:50:36,708 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 16:50:36,710 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 16:50:37,082 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 16:50:37,104 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:37,104 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 39 [2020-12-23 16:50:37,106 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:37,113 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:37,115 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:37,115 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:3 [2020-12-23 16:50:37,235 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 27 proven. 599 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:50:37,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:50:37,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 37] total 58 [2020-12-23 16:50:37,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827502335] [2020-12-23 16:50:37,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-12-23 16:50:37,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:50:37,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-12-23 16:50:37,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=3169, Unknown=0, NotChecked=0, Total=3306 [2020-12-23 16:50:37,237 INFO L87 Difference]: Start difference. First operand 179 states and 182 transitions. Second operand 58 states. [2020-12-23 16:50:47,896 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-12-23 16:50:48,213 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-12-23 16:50:48,554 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-12-23 16:50:50,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:50:50,680 INFO L93 Difference]: Finished difference Result 516 states and 520 transitions. [2020-12-23 16:50:50,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-12-23 16:50:50,681 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 169 [2020-12-23 16:50:50,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:50:50,683 INFO L225 Difference]: With dead ends: 516 [2020-12-23 16:50:50,683 INFO L226 Difference]: Without dead ends: 193 [2020-12-23 16:50:50,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2512 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=985, Invalid=14765, Unknown=0, NotChecked=0, Total=15750 [2020-12-23 16:50:50,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-12-23 16:50:50,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 187. [2020-12-23 16:50:50,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-12-23 16:50:50,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 190 transitions. [2020-12-23 16:50:50,688 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 190 transitions. Word has length 169 [2020-12-23 16:50:50,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:50:50,688 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 190 transitions. [2020-12-23 16:50:50,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-12-23 16:50:50,689 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 190 transitions. [2020-12-23 16:50:50,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-12-23 16:50:50,690 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:50:50,690 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:50:50,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:50:50,898 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:50:50,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:50:50,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1674389986, now seen corresponding path program 16 times [2020-12-23 16:50:50,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:50:50,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592887414] [2020-12-23 16:50:50,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:50:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:50:51,632 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 91 proven. 449 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-12-23 16:50:51,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592887414] [2020-12-23 16:50:51,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677909789] [2020-12-23 16:50:51,633 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 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 [2020-12-23 16:50:52,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 16:50:52,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:50:52,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 57 conjunts are in the unsatisfiable core [2020-12-23 16:50:52,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:50:52,818 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 120 proven. 420 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-12-23 16:50:52,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:50:52,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 35 [2020-12-23 16:50:52,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483748070] [2020-12-23 16:50:52,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-12-23 16:50:52,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:50:52,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-12-23 16:50:52,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1077, Unknown=0, NotChecked=0, Total=1260 [2020-12-23 16:50:52,820 INFO L87 Difference]: Start difference. First operand 187 states and 190 transitions. Second operand 36 states. [2020-12-23 16:50:54,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:50:54,389 INFO L93 Difference]: Finished difference Result 201 states and 205 transitions. [2020-12-23 16:50:54,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-23 16:50:54,390 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 177 [2020-12-23 16:50:54,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:50:54,391 INFO L225 Difference]: With dead ends: 201 [2020-12-23 16:50:54,391 INFO L226 Difference]: Without dead ends: 199 [2020-12-23 16:50:54,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=490, Invalid=1766, Unknown=0, NotChecked=0, Total=2256 [2020-12-23 16:50:54,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-12-23 16:50:54,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 197. [2020-12-23 16:50:54,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-12-23 16:50:54,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 200 transitions. [2020-12-23 16:50:54,396 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 200 transitions. Word has length 177 [2020-12-23 16:50:54,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:50:54,397 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 200 transitions. [2020-12-23 16:50:54,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-12-23 16:50:54,397 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 200 transitions. [2020-12-23 16:50:54,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-12-23 16:50:54,398 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:50:54,398 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:50:54,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-12-23 16:50:54,612 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:50:54,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:50:54,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1653391795, now seen corresponding path program 17 times [2020-12-23 16:50:54,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:50:54,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963780138] [2020-12-23 16:50:54,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:50:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:50:55,646 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 30 proven. 603 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-12-23 16:50:55,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963780138] [2020-12-23 16:50:55,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885293811] [2020-12-23 16:50:55,647 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 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 [2020-12-23 16:50:56,280 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-12-23 16:50:56,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:50:56,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 78 conjunts are in the unsatisfiable core [2020-12-23 16:50:56,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:50:57,037 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-23 16:50:57,038 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:57,046 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:57,047 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:50:57,047 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2020-12-23 16:50:59,093 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 16:50:59,095 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 16:50:59,419 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:50:59,420 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:59,422 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:59,423 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:59,423 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-23 16:50:59,532 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 30 proven. 603 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-12-23 16:50:59,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:50:59,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 31] total 53 [2020-12-23 16:50:59,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157365484] [2020-12-23 16:50:59,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-12-23 16:50:59,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:50:59,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-12-23 16:50:59,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2649, Unknown=0, NotChecked=0, Total=2756 [2020-12-23 16:50:59,536 INFO L87 Difference]: Start difference. First operand 197 states and 200 transitions. Second operand 53 states. [2020-12-23 16:51:10,866 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2020-12-23 16:51:11,196 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-12-23 16:51:11,553 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-12-23 16:51:13,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:51:13,702 INFO L93 Difference]: Finished difference Result 568 states and 572 transitions. [2020-12-23 16:51:13,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-12-23 16:51:13,703 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 187 [2020-12-23 16:51:13,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:51:13,704 INFO L225 Difference]: With dead ends: 568 [2020-12-23 16:51:13,704 INFO L226 Difference]: Without dead ends: 211 [2020-12-23 16:51:13,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1980 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=839, Invalid=12501, Unknown=0, NotChecked=0, Total=13340 [2020-12-23 16:51:13,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-12-23 16:51:13,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 205. [2020-12-23 16:51:13,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-12-23 16:51:13,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 208 transitions. [2020-12-23 16:51:13,710 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 208 transitions. Word has length 187 [2020-12-23 16:51:13,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:51:13,710 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 208 transitions. [2020-12-23 16:51:13,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-12-23 16:51:13,711 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 208 transitions. [2020-12-23 16:51:13,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-12-23 16:51:13,712 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:51:13,712 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:51:13,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-12-23 16:51:13,926 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:51:13,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:51:13,927 INFO L82 PathProgramCache]: Analyzing trace with hash -471861869, now seen corresponding path program 18 times [2020-12-23 16:51:13,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:51:13,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326179638] [2020-12-23 16:51:13,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:51:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:51:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 120 proven. 550 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-12-23 16:51:14,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326179638] [2020-12-23 16:51:14,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218981641] [2020-12-23 16:51:14,801 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 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 [2020-12-23 16:51:17,136 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-12-23 16:51:17,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:51:17,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 57 conjunts are in the unsatisfiable core [2020-12-23 16:51:17,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:51:18,334 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 153 proven. 517 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-12-23 16:51:18,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:51:18,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 37 [2020-12-23 16:51:18,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662105147] [2020-12-23 16:51:18,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-12-23 16:51:18,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:51:18,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-12-23 16:51:18,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1230, Unknown=0, NotChecked=0, Total=1406 [2020-12-23 16:51:18,336 INFO L87 Difference]: Start difference. First operand 205 states and 208 transitions. Second operand 38 states. [2020-12-23 16:51:20,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:51:20,831 INFO L93 Difference]: Finished difference Result 219 states and 223 transitions. [2020-12-23 16:51:20,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-23 16:51:20,832 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 195 [2020-12-23 16:51:20,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:51:20,834 INFO L225 Difference]: With dead ends: 219 [2020-12-23 16:51:20,834 INFO L226 Difference]: Without dead ends: 217 [2020-12-23 16:51:20,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=466, Invalid=2084, Unknown=0, NotChecked=0, Total=2550 [2020-12-23 16:51:20,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-12-23 16:51:20,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2020-12-23 16:51:20,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-12-23 16:51:20,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 218 transitions. [2020-12-23 16:51:20,841 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 218 transitions. Word has length 195 [2020-12-23 16:51:20,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:51:20,842 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 218 transitions. [2020-12-23 16:51:20,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-12-23 16:51:20,842 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 218 transitions. [2020-12-23 16:51:20,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-12-23 16:51:20,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:51:20,843 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:51:21,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-12-23 16:51:21,057 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:51:21,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:51:21,057 INFO L82 PathProgramCache]: Analyzing trace with hash -85729090, now seen corresponding path program 19 times [2020-12-23 16:51:21,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:51:21,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892828151] [2020-12-23 16:51:21,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:51:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:51:22,440 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 33 proven. 740 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-12-23 16:51:22,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892828151] [2020-12-23 16:51:22,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133465585] [2020-12-23 16:51:22,441 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 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 [2020-12-23 16:51:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:51:22,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 84 conjunts are in the unsatisfiable core [2020-12-23 16:51:22,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:51:23,674 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-23 16:51:23,677 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:23,685 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:23,686 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:51:23,687 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2020-12-23 16:51:25,986 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 16:51:25,988 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 16:51:26,369 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:51:26,371 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:26,372 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:26,373 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:51:26,373 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-23 16:51:26,499 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 33 proven. 740 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-12-23 16:51:26,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:51:26,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 33] total 57 [2020-12-23 16:51:26,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795984538] [2020-12-23 16:51:26,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-12-23 16:51:26,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:51:26,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-12-23 16:51:26,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=3077, Unknown=0, NotChecked=0, Total=3192 [2020-12-23 16:51:26,502 INFO L87 Difference]: Start difference. First operand 215 states and 218 transitions. Second operand 57 states. [2020-12-23 16:51:40,443 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2020-12-23 16:51:40,816 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-12-23 16:51:41,200 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-12-23 16:51:43,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:51:43,594 INFO L93 Difference]: Finished difference Result 620 states and 624 transitions. [2020-12-23 16:51:43,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-12-23 16:51:43,595 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 205 [2020-12-23 16:51:43,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:51:43,597 INFO L225 Difference]: With dead ends: 620 [2020-12-23 16:51:43,597 INFO L226 Difference]: Without dead ends: 229 [2020-12-23 16:51:43,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 178 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2241 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=889, Invalid=14363, Unknown=0, NotChecked=0, Total=15252 [2020-12-23 16:51:43,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-12-23 16:51:43,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 223. [2020-12-23 16:51:43,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-12-23 16:51:43,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 226 transitions. [2020-12-23 16:51:43,603 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 226 transitions. Word has length 205 [2020-12-23 16:51:43,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:51:43,603 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 226 transitions. [2020-12-23 16:51:43,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-12-23 16:51:43,604 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 226 transitions. [2020-12-23 16:51:43,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-12-23 16:51:43,605 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:51:43,605 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:51:43,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-12-23 16:51:43,820 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:51:43,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:51:43,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1278947972, now seen corresponding path program 20 times [2020-12-23 16:51:43,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:51:43,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102759505] [2020-12-23 16:51:43,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:51:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:51:44,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 153 proven. 661 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-12-23 16:51:44,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102759505] [2020-12-23 16:51:44,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705341954] [2020-12-23 16:51:44,862 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 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 [2020-12-23 16:51:45,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:51:45,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:51:45,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 67 conjunts are in the unsatisfiable core [2020-12-23 16:51:45,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:51:46,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 190 proven. 624 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-12-23 16:51:46,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:51:46,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27] total 41 [2020-12-23 16:51:46,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542175007] [2020-12-23 16:51:46,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-12-23 16:51:46,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:51:46,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-12-23 16:51:46,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1470, Unknown=0, NotChecked=0, Total=1722 [2020-12-23 16:51:46,198 INFO L87 Difference]: Start difference. First operand 223 states and 226 transitions. Second operand 42 states. [2020-12-23 16:51:48,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:51:48,611 INFO L93 Difference]: Finished difference Result 237 states and 241 transitions. [2020-12-23 16:51:48,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-23 16:51:48,612 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 213 [2020-12-23 16:51:48,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:51:48,614 INFO L225 Difference]: With dead ends: 237 [2020-12-23 16:51:48,614 INFO L226 Difference]: Without dead ends: 235 [2020-12-23 16:51:48,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=667, Invalid=2413, Unknown=0, NotChecked=0, Total=3080 [2020-12-23 16:51:48,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-12-23 16:51:48,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2020-12-23 16:51:48,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-12-23 16:51:48,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 236 transitions. [2020-12-23 16:51:48,620 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 236 transitions. Word has length 213 [2020-12-23 16:51:48,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:51:48,620 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 236 transitions. [2020-12-23 16:51:48,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-12-23 16:51:48,620 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 236 transitions. [2020-12-23 16:51:48,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-12-23 16:51:48,622 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:51:48,622 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:51:48,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-12-23 16:51:48,837 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:51:48,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:51:48,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1297062801, now seen corresponding path program 21 times [2020-12-23 16:51:48,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:51:48,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884521571] [2020-12-23 16:51:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:51:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:51:50,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1158 backedges. 36 proven. 891 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-12-23 16:51:50,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884521571] [2020-12-23 16:51:50,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638477183] [2020-12-23 16:51:50,440 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 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 [2020-12-23 16:51:52,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-12-23 16:51:52,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:51:52,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 121 conjunts are in the unsatisfiable core [2020-12-23 16:51:52,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:51:55,952 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-23 16:51:55,956 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:55,968 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:55,970 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:51:55,970 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2020-12-23 16:51:59,393 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 16:51:59,394 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 16:51:59,948 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 16:51:59,980 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:59,981 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 39 [2020-12-23 16:51:59,983 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:59,991 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:59,993 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:51:59,993 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:3 [2020-12-23 16:52:00,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1158 backedges. 36 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:52:00,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:52:00,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 49] total 76 [2020-12-23 16:52:00,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043867353] [2020-12-23 16:52:00,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-12-23 16:52:00,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:52:00,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-12-23 16:52:00,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=5516, Unknown=0, NotChecked=0, Total=5700 [2020-12-23 16:52:00,227 INFO L87 Difference]: Start difference. First operand 233 states and 236 transitions. Second operand 76 states. [2020-12-23 16:52:11,939 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-12-23 16:52:13,600 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-23 16:52:14,767 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-23 16:52:15,939 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-23 16:52:17,096 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-23 16:52:18,222 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-23 16:52:19,429 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-23 16:52:20,602 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-23 16:52:21,766 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-23 16:52:22,924 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-23 16:52:24,157 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-23 16:52:25,325 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-23 16:52:25,733 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-23 16:52:26,281 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-12-23 16:52:26,834 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-12-23 16:52:27,710 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-23 16:52:28,403 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-12-23 16:52:29,065 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-12-23 16:52:30,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:52:30,643 INFO L93 Difference]: Finished difference Result 672 states and 676 transitions. [2020-12-23 16:52:30,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2020-12-23 16:52:30,644 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 223 [2020-12-23 16:52:30,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:52:30,646 INFO L225 Difference]: With dead ends: 672 [2020-12-23 16:52:30,646 INFO L226 Difference]: Without dead ends: 247 [2020-12-23 16:52:30,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3897 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=1249, Invalid=23873, Unknown=0, NotChecked=0, Total=25122 [2020-12-23 16:52:30,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-12-23 16:52:30,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 241. [2020-12-23 16:52:30,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-12-23 16:52:30,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 244 transitions. [2020-12-23 16:52:30,653 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 244 transitions. Word has length 223 [2020-12-23 16:52:30,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:52:30,653 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 244 transitions. [2020-12-23 16:52:30,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-12-23 16:52:30,653 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 244 transitions. [2020-12-23 16:52:30,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-12-23 16:52:30,654 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:52:30,655 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:52:30,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:52:30,856 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:52:30,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:52:30,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1503178933, now seen corresponding path program 22 times [2020-12-23 16:52:30,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:52:30,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106184480] [2020-12-23 16:52:30,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:52:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:52:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 190 proven. 782 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-12-23 16:52:32,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106184480] [2020-12-23 16:52:32,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334001831] [2020-12-23 16:52:32,453 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 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 [2020-12-23 16:52:33,238 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 16:52:33,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:52:33,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 76 conjunts are in the unsatisfiable core [2020-12-23 16:52:33,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:52:34,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 231 proven. 741 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-12-23 16:52:34,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:52:34,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29] total 42 [2020-12-23 16:52:34,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126620043] [2020-12-23 16:52:34,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-12-23 16:52:34,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:52:34,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-12-23 16:52:34,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1643, Unknown=0, NotChecked=0, Total=1806 [2020-12-23 16:52:34,952 INFO L87 Difference]: Start difference. First operand 241 states and 244 transitions. Second operand 43 states. [2020-12-23 16:52:38,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:52:38,405 INFO L93 Difference]: Finished difference Result 255 states and 259 transitions. [2020-12-23 16:52:38,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-23 16:52:38,408 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 231 [2020-12-23 16:52:38,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:52:38,410 INFO L225 Difference]: With dead ends: 255 [2020-12-23 16:52:38,410 INFO L226 Difference]: Without dead ends: 253 [2020-12-23 16:52:38,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 215 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=455, Invalid=2851, Unknown=0, NotChecked=0, Total=3306 [2020-12-23 16:52:38,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-12-23 16:52:38,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 251. [2020-12-23 16:52:38,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-12-23 16:52:38,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 254 transitions. [2020-12-23 16:52:38,417 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 254 transitions. Word has length 231 [2020-12-23 16:52:38,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:52:38,418 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 254 transitions. [2020-12-23 16:52:38,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-12-23 16:52:38,418 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 254 transitions. [2020-12-23 16:52:38,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-23 16:52:38,419 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:52:38,419 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:52:38,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-12-23 16:52:38,633 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2020-12-23 16:52:38,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:52:38,634 INFO L82 PathProgramCache]: Analyzing trace with hash 2140051808, now seen corresponding path program 23 times [2020-12-23 16:52:38,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:52:38,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186540977] [2020-12-23 16:52:38,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:52:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:52:40,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1371 backedges. 39 proven. 1056 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-12-23 16:52:40,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186540977] [2020-12-23 16:52:40,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595411543] [2020-12-23 16:52:40,890 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 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 [2020-12-23 16:52:42,191 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2020-12-23 16:52:42,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:52:42,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 96 conjunts are in the unsatisfiable core [2020-12-23 16:52:42,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:52:43,826 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-23 16:52:43,828 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:43,841 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:43,843 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:52:43,844 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2020-12-23 16:52:47,667 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 16:52:47,668 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 16:52:48,156 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:52:48,160 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:48,162 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:48,163 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:48,163 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-23 16:52:48,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1371 backedges. 39 proven. 1056 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-12-23 16:52:48,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:52:48,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 37] total 65 [2020-12-23 16:52:48,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579977806] [2020-12-23 16:52:48,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-12-23 16:52:48,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:52:48,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-12-23 16:52:48,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=4029, Unknown=0, NotChecked=0, Total=4160 [2020-12-23 16:52:48,332 INFO L87 Difference]: Start difference. First operand 251 states and 254 transitions. Second operand 65 states.