/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/cstrpbrk-alloca-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:00:21,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:00:21,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:00:21,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:00:21,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:00:21,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:00:21,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:00:21,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:00:21,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:00:21,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:00:21,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:00:21,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:00:21,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:00:21,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:00:21,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:00:21,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:00:21,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:00:21,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:00:21,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:00:21,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:00:21,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:00:21,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:00:21,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:00:21,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:00:21,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:00:21,843 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:00:21,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:00:21,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:00:21,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:00:21,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:00:21,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:00:21,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:00:21,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:00:21,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:00:21,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:00:21,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:00:21,864 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-01-07 05:00:21,915 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:00:21,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:00:21,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:00:21,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:00:21,922 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:00:21,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:00:21,922 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:00:21,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:00:21,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:00:21,923 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:00:21,923 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:00:21,923 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:00:21,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:00:21,924 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:00:21,924 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:00:21,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:00:21,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:00:21,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:00:21,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:00:21,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:00:21,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:00:21,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:00:21,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:00:21,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:00:21,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:00:22,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:00:22,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:00:22,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:00:22,381 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:00:22,382 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:00:22,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrpbrk-alloca-2.i [2021-01-07 05:00:22,480 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3db5a8db8/90928038d2c84922b5a5ade711573507/FLAG1c367c1eb [2021-01-07 05:00:23,284 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:00:23,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrpbrk-alloca-2.i [2021-01-07 05:00:23,302 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3db5a8db8/90928038d2c84922b5a5ade711573507/FLAG1c367c1eb [2021-01-07 05:00:23,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3db5a8db8/90928038d2c84922b5a5ade711573507 [2021-01-07 05:00:23,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:00:23,559 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:00:23,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:00:23,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:00:23,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:00:23,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:00:23" (1/1) ... [2021-01-07 05:00:23,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ed69ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:23, skipping insertion in model container [2021-01-07 05:00:23,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:00:23" (1/1) ... [2021-01-07 05:00:23,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:00:23,649 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~sc1~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~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]]]]] [2021-01-07 05:00:24,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:00:24,015 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~sc1~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~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]]]]] [2021-01-07 05:00:24,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:00:24,121 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:00:24,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:24 WrapperNode [2021-01-07 05:00:24,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:00:24,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:00:24,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:00:24,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:00:24,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:24" (1/1) ... [2021-01-07 05:00:24,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:24" (1/1) ... [2021-01-07 05:00:24,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:00:24,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:00:24,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:00:24,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:00:24,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:24" (1/1) ... [2021-01-07 05:00:24,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:24" (1/1) ... [2021-01-07 05:00:24,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:24" (1/1) ... [2021-01-07 05:00:24,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:24" (1/1) ... [2021-01-07 05:00:24,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:24" (1/1) ... [2021-01-07 05:00:24,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:24" (1/1) ... [2021-01-07 05:00:24,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:24" (1/1) ... [2021-01-07 05:00:24,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:00:24,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:00:24,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:00:24,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:00:24,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:00:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:00:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:00:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:00:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:00:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:00:24,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:00:24,765 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:00:24,766 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-07 05:00:24,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:00:24 BoogieIcfgContainer [2021-01-07 05:00:24,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:00:24,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:00:24,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:00:24,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:00:24,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:00:23" (1/3) ... [2021-01-07 05:00:24,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c136c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:00:24, skipping insertion in model container [2021-01-07 05:00:24,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:24" (2/3) ... [2021-01-07 05:00:24,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c136c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:00:24, skipping insertion in model container [2021-01-07 05:00:24,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:00:24" (3/3) ... [2021-01-07 05:00:24,790 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrpbrk-alloca-2.i [2021-01-07 05:00:24,804 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:00:24,817 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2021-01-07 05:00:24,866 INFO L253 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-01-07 05:00:24,926 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:00:24,927 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:00:24,927 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:00:24,927 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:00:24,928 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:00:24,928 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:00:24,928 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:00:24,928 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:00:24,950 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2021-01-07 05:00:24,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:00:24,959 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:24,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:24,960 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]=== [2021-01-07 05:00:24,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:24,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2021-01-07 05:00:24,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:24,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566218182] [2021-01-07 05:00:24,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:25,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:25,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566218182] [2021-01-07 05:00:25,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:25,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:00:25,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505282210] [2021-01-07 05:00:25,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:25,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:25,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:25,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:25,253 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2021-01-07 05:00:25,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:25,328 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2021-01-07 05:00:25,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:25,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-01-07 05:00:25,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:25,358 INFO L225 Difference]: With dead ends: 100 [2021-01-07 05:00:25,358 INFO L226 Difference]: Without dead ends: 96 [2021-01-07 05:00:25,362 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 [2021-01-07 05:00:25,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-01-07 05:00:25,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 55. [2021-01-07 05:00:25,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-07 05:00:25,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-01-07 05:00:25,424 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 7 [2021-01-07 05:00:25,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:25,425 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-01-07 05:00:25,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:25,425 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2021-01-07 05:00:25,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:00:25,426 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:25,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:25,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:00:25,428 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]=== [2021-01-07 05:00:25,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:25,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1806876138, now seen corresponding path program 1 times [2021-01-07 05:00:25,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:25,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881227660] [2021-01-07 05:00:25,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:25,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:25,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881227660] [2021-01-07 05:00:25,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:25,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:00:25,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169928811] [2021-01-07 05:00:25,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:00:25,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:25,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:00:25,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:00:25,587 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 3 states. [2021-01-07 05:00:25,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:25,660 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2021-01-07 05:00:25,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:00:25,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-01-07 05:00:25,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:25,665 INFO L225 Difference]: With dead ends: 53 [2021-01-07 05:00:25,665 INFO L226 Difference]: Without dead ends: 53 [2021-01-07 05:00:25,666 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 [2021-01-07 05:00:25,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-01-07 05:00:25,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-01-07 05:00:25,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-07 05:00:25,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-01-07 05:00:25,686 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 7 [2021-01-07 05:00:25,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:25,686 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-01-07 05:00:25,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:00:25,687 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-01-07 05:00:25,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:00:25,688 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:25,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:25,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:00:25,689 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]=== [2021-01-07 05:00:25,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:25,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2021-01-07 05:00:25,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:25,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054460721] [2021-01-07 05:00:25,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:25,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:25,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054460721] [2021-01-07 05:00:25,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:25,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:25,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625249752] [2021-01-07 05:00:25,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:25,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:25,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:25,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:25,798 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 4 states. [2021-01-07 05:00:25,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:25,982 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2021-01-07 05:00:25,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:25,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-01-07 05:00:25,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:25,988 INFO L225 Difference]: With dead ends: 97 [2021-01-07 05:00:25,988 INFO L226 Difference]: Without dead ends: 97 [2021-01-07 05:00:25,988 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 [2021-01-07 05:00:25,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-01-07 05:00:26,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 55. [2021-01-07 05:00:26,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-07 05:00:26,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2021-01-07 05:00:26,010 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 7 [2021-01-07 05:00:26,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:26,011 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2021-01-07 05:00:26,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:26,013 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2021-01-07 05:00:26,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:00:26,014 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:26,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:26,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-07 05:00:26,015 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]=== [2021-01-07 05:00:26,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:26,017 INFO L82 PathProgramCache]: Analyzing trace with hash -533876960, now seen corresponding path program 1 times [2021-01-07 05:00:26,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:26,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200376389] [2021-01-07 05:00:26,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:26,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:26,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200376389] [2021-01-07 05:00:26,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:26,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:26,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039111084] [2021-01-07 05:00:26,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:26,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:26,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:26,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:26,097 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 4 states. [2021-01-07 05:00:26,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:26,159 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2021-01-07 05:00:26,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:26,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-07 05:00:26,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:26,161 INFO L225 Difference]: With dead ends: 54 [2021-01-07 05:00:26,161 INFO L226 Difference]: Without dead ends: 54 [2021-01-07 05:00:26,161 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 [2021-01-07 05:00:26,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-07 05:00:26,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-01-07 05:00:26,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-07 05:00:26,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2021-01-07 05:00:26,166 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 9 [2021-01-07 05:00:26,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:26,166 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2021-01-07 05:00:26,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:26,166 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2021-01-07 05:00:26,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:00:26,167 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:26,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:26,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-07 05:00:26,168 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]=== [2021-01-07 05:00:26,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:26,168 INFO L82 PathProgramCache]: Analyzing trace with hash -533876908, now seen corresponding path program 1 times [2021-01-07 05:00:26,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:26,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014479774] [2021-01-07 05:00:26,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:26,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:26,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014479774] [2021-01-07 05:00:26,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:26,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:00:26,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12128975] [2021-01-07 05:00:26,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:26,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:26,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:26,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:26,202 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 4 states. [2021-01-07 05:00:26,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:26,222 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2021-01-07 05:00:26,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:26,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-07 05:00:26,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:26,223 INFO L225 Difference]: With dead ends: 98 [2021-01-07 05:00:26,223 INFO L226 Difference]: Without dead ends: 98 [2021-01-07 05:00:26,224 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 [2021-01-07 05:00:26,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-01-07 05:00:26,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 65. [2021-01-07 05:00:26,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-07 05:00:26,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2021-01-07 05:00:26,229 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 9 [2021-01-07 05:00:26,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:26,229 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2021-01-07 05:00:26,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:26,229 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2021-01-07 05:00:26,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:00:26,230 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:26,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:26,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-07 05:00:26,231 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]=== [2021-01-07 05:00:26,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:26,232 INFO L82 PathProgramCache]: Analyzing trace with hash -476618606, now seen corresponding path program 1 times [2021-01-07 05:00:26,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:26,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294580876] [2021-01-07 05:00:26,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:26,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:26,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294580876] [2021-01-07 05:00:26,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:26,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:00:26,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578583657] [2021-01-07 05:00:26,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:00:26,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:26,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:00:26,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:00:26,285 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand 3 states. [2021-01-07 05:00:26,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:26,320 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2021-01-07 05:00:26,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:00:26,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2021-01-07 05:00:26,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:26,321 INFO L225 Difference]: With dead ends: 63 [2021-01-07 05:00:26,321 INFO L226 Difference]: Without dead ends: 63 [2021-01-07 05:00:26,322 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 [2021-01-07 05:00:26,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-01-07 05:00:26,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-01-07 05:00:26,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-01-07 05:00:26,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2021-01-07 05:00:26,331 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 9 [2021-01-07 05:00:26,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:26,332 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2021-01-07 05:00:26,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:00:26,332 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2021-01-07 05:00:26,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:00:26,333 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:26,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:26,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-07 05:00:26,334 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]=== [2021-01-07 05:00:26,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:26,335 INFO L82 PathProgramCache]: Analyzing trace with hash -476618605, now seen corresponding path program 1 times [2021-01-07 05:00:26,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:26,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155747987] [2021-01-07 05:00:26,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:26,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155747987] [2021-01-07 05:00:26,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:26,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:00:26,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737224476] [2021-01-07 05:00:26,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:00:26,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:26,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:00:26,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:00:26,422 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand 5 states. [2021-01-07 05:00:26,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:26,513 INFO L93 Difference]: Finished difference Result 98 states and 114 transitions. [2021-01-07 05:00:26,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:00:26,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2021-01-07 05:00:26,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:26,514 INFO L225 Difference]: With dead ends: 98 [2021-01-07 05:00:26,514 INFO L226 Difference]: Without dead ends: 98 [2021-01-07 05:00:26,515 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 [2021-01-07 05:00:26,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-01-07 05:00:26,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 65. [2021-01-07 05:00:26,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-07 05:00:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2021-01-07 05:00:26,523 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 9 [2021-01-07 05:00:26,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:26,523 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2021-01-07 05:00:26,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:00:26,524 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2021-01-07 05:00:26,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-07 05:00:26,524 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:26,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:26,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-07 05:00:26,525 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]=== [2021-01-07 05:00:26,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:26,526 INFO L82 PathProgramCache]: Analyzing trace with hash 629683418, now seen corresponding path program 1 times [2021-01-07 05:00:26,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:26,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044583455] [2021-01-07 05:00:26,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:26,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:26,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044583455] [2021-01-07 05:00:26,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:26,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:26,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530501586] [2021-01-07 05:00:26,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:26,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:26,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:26,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:26,567 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand 4 states. [2021-01-07 05:00:26,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:26,602 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2021-01-07 05:00:26,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:26,603 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-01-07 05:00:26,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:26,603 INFO L225 Difference]: With dead ends: 64 [2021-01-07 05:00:26,603 INFO L226 Difference]: Without dead ends: 64 [2021-01-07 05:00:26,604 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 [2021-01-07 05:00:26,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-01-07 05:00:26,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-01-07 05:00:26,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-01-07 05:00:26,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions. [2021-01-07 05:00:26,608 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 10 [2021-01-07 05:00:26,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:26,608 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions. [2021-01-07 05:00:26,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:26,608 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2021-01-07 05:00:26,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-07 05:00:26,609 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:26,609 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:26,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-07 05:00:26,610 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]=== [2021-01-07 05:00:26,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:26,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2021-01-07 05:00:26,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:26,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389898536] [2021-01-07 05:00:26,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:26,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:26,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389898536] [2021-01-07 05:00:26,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231887404] [2021-01-07 05:00:26,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:26,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-07 05:00:26,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:26,832 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_22|], 1=[|v_#valid_30|]} [2021-01-07 05:00:26,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:00:26,852 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 [2021-01-07 05:00:26,854 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:26,864 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:26,873 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 [2021-01-07 05:00:26,881 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:26,890 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:26,894 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:26,894 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2021-01-07 05:00:26,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:26,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:26,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-01-07 05:00:26,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671807827] [2021-01-07 05:00:26,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:00:26,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:26,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:00:26,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:00:26,962 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand 6 states. [2021-01-07 05:00:27,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:27,092 INFO L93 Difference]: Finished difference Result 107 states and 124 transitions. [2021-01-07 05:00:27,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:00:27,093 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-01-07 05:00:27,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:27,094 INFO L225 Difference]: With dead ends: 107 [2021-01-07 05:00:27,094 INFO L226 Difference]: Without dead ends: 107 [2021-01-07 05:00:27,095 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 [2021-01-07 05:00:27,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-01-07 05:00:27,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 59. [2021-01-07 05:00:27,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-01-07 05:00:27,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2021-01-07 05:00:27,099 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 11 [2021-01-07 05:00:27,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:27,099 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2021-01-07 05:00:27,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:00:27,100 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2021-01-07 05:00:27,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-07 05:00:27,100 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:27,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:27,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-07 05:00:27,315 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]=== [2021-01-07 05:00:27,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:27,316 INFO L82 PathProgramCache]: Analyzing trace with hash -464624131, now seen corresponding path program 1 times [2021-01-07 05:00:27,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:27,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910622106] [2021-01-07 05:00:27,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:27,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:27,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910622106] [2021-01-07 05:00:27,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:27,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:27,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305754818] [2021-01-07 05:00:27,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:27,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:27,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:27,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:27,359 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 4 states. [2021-01-07 05:00:27,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:27,404 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2021-01-07 05:00:27,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:27,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-01-07 05:00:27,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:27,405 INFO L225 Difference]: With dead ends: 57 [2021-01-07 05:00:27,405 INFO L226 Difference]: Without dead ends: 57 [2021-01-07 05:00:27,406 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 [2021-01-07 05:00:27,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-01-07 05:00:27,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-01-07 05:00:27,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-01-07 05:00:27,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2021-01-07 05:00:27,409 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 12 [2021-01-07 05:00:27,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:27,409 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2021-01-07 05:00:27,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:27,409 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2021-01-07 05:00:27,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-07 05:00:27,410 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:27,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:27,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-07 05:00:27,411 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]=== [2021-01-07 05:00:27,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:27,411 INFO L82 PathProgramCache]: Analyzing trace with hash -464624130, now seen corresponding path program 1 times [2021-01-07 05:00:27,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:27,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747430577] [2021-01-07 05:00:27,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:27,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:27,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747430577] [2021-01-07 05:00:27,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:27,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:00:27,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702360854] [2021-01-07 05:00:27,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:00:27,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:27,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:00:27,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:00:27,464 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 6 states. [2021-01-07 05:00:27,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:27,541 INFO L93 Difference]: Finished difference Result 80 states and 93 transitions. [2021-01-07 05:00:27,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:00:27,542 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-01-07 05:00:27,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:27,542 INFO L225 Difference]: With dead ends: 80 [2021-01-07 05:00:27,543 INFO L226 Difference]: Without dead ends: 80 [2021-01-07 05:00:27,543 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 [2021-01-07 05:00:27,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-01-07 05:00:27,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-01-07 05:00:27,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-01-07 05:00:27,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2021-01-07 05:00:27,546 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 12 [2021-01-07 05:00:27,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:27,547 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2021-01-07 05:00:27,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:00:27,547 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2021-01-07 05:00:27,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-07 05:00:27,548 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:27,548 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:27,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-07 05:00:27,548 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]=== [2021-01-07 05:00:27,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:27,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1862804906, now seen corresponding path program 1 times [2021-01-07 05:00:27,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:27,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204182597] [2021-01-07 05:00:27,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:27,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204182597] [2021-01-07 05:00:27,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330140269] [2021-01-07 05:00:27,605 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 [2021-01-07 05:00:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:27,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-07 05:00:27,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:27,670 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:27,671 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 [2021-01-07 05:00:27,673 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:27,689 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:00:27,691 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:27,691 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:00:27,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:27,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:27,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-01-07 05:00:27,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196331280] [2021-01-07 05:00:27,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:00:27,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:27,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:00:27,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:00:27,725 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 7 states. [2021-01-07 05:00:27,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:27,843 INFO L93 Difference]: Finished difference Result 92 states and 107 transitions. [2021-01-07 05:00:27,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:00:27,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2021-01-07 05:00:27,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:27,844 INFO L225 Difference]: With dead ends: 92 [2021-01-07 05:00:27,845 INFO L226 Difference]: Without dead ends: 92 [2021-01-07 05:00:27,845 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 [2021-01-07 05:00:27,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-01-07 05:00:27,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 57. [2021-01-07 05:00:27,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-01-07 05:00:27,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2021-01-07 05:00:27,859 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 13 [2021-01-07 05:00:27,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:27,859 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2021-01-07 05:00:27,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:00:27,859 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2021-01-07 05:00:27,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-07 05:00:27,860 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:27,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:28,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-07 05:00:28,074 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]=== [2021-01-07 05:00:28,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:28,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1433224404, now seen corresponding path program 1 times [2021-01-07 05:00:28,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:28,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222346431] [2021-01-07 05:00:28,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:28,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:28,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222346431] [2021-01-07 05:00:28,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:28,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:28,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373440333] [2021-01-07 05:00:28,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:28,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:28,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:28,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:28,175 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 4 states. [2021-01-07 05:00:28,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:28,208 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2021-01-07 05:00:28,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:28,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-01-07 05:00:28,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:28,209 INFO L225 Difference]: With dead ends: 56 [2021-01-07 05:00:28,209 INFO L226 Difference]: Without dead ends: 53 [2021-01-07 05:00:28,210 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 [2021-01-07 05:00:28,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-01-07 05:00:28,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-01-07 05:00:28,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-07 05:00:28,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-01-07 05:00:28,212 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 16 [2021-01-07 05:00:28,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:28,213 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-01-07 05:00:28,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:28,213 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-01-07 05:00:28,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-07 05:00:28,213 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:28,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:28,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-07 05:00:28,214 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]=== [2021-01-07 05:00:28,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:28,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1433207485, now seen corresponding path program 1 times [2021-01-07 05:00:28,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:28,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115632715] [2021-01-07 05:00:28,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:28,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:28,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115632715] [2021-01-07 05:00:28,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:28,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:00:28,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333958938] [2021-01-07 05:00:28,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:00:28,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:28,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:00:28,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:00:28,250 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 5 states. [2021-01-07 05:00:28,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:28,311 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2021-01-07 05:00:28,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:00:28,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2021-01-07 05:00:28,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:28,312 INFO L225 Difference]: With dead ends: 50 [2021-01-07 05:00:28,312 INFO L226 Difference]: Without dead ends: 50 [2021-01-07 05:00:28,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:00:28,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-07 05:00:28,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-01-07 05:00:28,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-01-07 05:00:28,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2021-01-07 05:00:28,315 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 16 [2021-01-07 05:00:28,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:28,315 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2021-01-07 05:00:28,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:00:28,315 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2021-01-07 05:00:28,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-07 05:00:28,316 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:28,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:28,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-07 05:00:28,317 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]=== [2021-01-07 05:00:28,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:28,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1433207484, now seen corresponding path program 1 times [2021-01-07 05:00:28,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:28,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750374131] [2021-01-07 05:00:28,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:28,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:28,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750374131] [2021-01-07 05:00:28,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:28,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-07 05:00:28,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99177044] [2021-01-07 05:00:28,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:00:28,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:28,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:00:28,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:00:28,382 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 7 states. [2021-01-07 05:00:28,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:28,463 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2021-01-07 05:00:28,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:00:28,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2021-01-07 05:00:28,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:28,464 INFO L225 Difference]: With dead ends: 62 [2021-01-07 05:00:28,464 INFO L226 Difference]: Without dead ends: 62 [2021-01-07 05:00:28,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:00:28,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-01-07 05:00:28,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2021-01-07 05:00:28,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-01-07 05:00:28,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2021-01-07 05:00:28,467 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 16 [2021-01-07 05:00:28,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:28,468 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2021-01-07 05:00:28,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:00:28,468 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2021-01-07 05:00:28,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-07 05:00:28,468 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:28,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:28,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-07 05:00:28,469 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]=== [2021-01-07 05:00:28,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:28,470 INFO L82 PathProgramCache]: Analyzing trace with hash 43271131, now seen corresponding path program 1 times [2021-01-07 05:00:28,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:28,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288945601] [2021-01-07 05:00:28,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:28,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288945601] [2021-01-07 05:00:28,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:28,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:28,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143819671] [2021-01-07 05:00:28,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:00:28,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:28,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:00:28,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:00:28,495 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 3 states. [2021-01-07 05:00:28,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:28,504 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2021-01-07 05:00:28,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:00:28,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-01-07 05:00:28,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:28,506 INFO L225 Difference]: With dead ends: 59 [2021-01-07 05:00:28,506 INFO L226 Difference]: Without dead ends: 59 [2021-01-07 05:00:28,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:00:28,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-01-07 05:00:28,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-01-07 05:00:28,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-01-07 05:00:28,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2021-01-07 05:00:28,509 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 20 [2021-01-07 05:00:28,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:28,509 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2021-01-07 05:00:28,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:00:28,509 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2021-01-07 05:00:28,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-07 05:00:28,510 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:28,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:28,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-07 05:00:28,511 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]=== [2021-01-07 05:00:28,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:28,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1371974184, now seen corresponding path program 1 times [2021-01-07 05:00:28,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:28,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983093579] [2021-01-07 05:00:28,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:28,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:28,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983093579] [2021-01-07 05:00:28,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:28,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-07 05:00:28,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553650087] [2021-01-07 05:00:28,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:00:28,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:28,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:00:28,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:00:28,619 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 7 states. [2021-01-07 05:00:28,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:28,731 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2021-01-07 05:00:28,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:00:28,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2021-01-07 05:00:28,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:28,732 INFO L225 Difference]: With dead ends: 71 [2021-01-07 05:00:28,732 INFO L226 Difference]: Without dead ends: 54 [2021-01-07 05:00:28,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:00:28,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-07 05:00:28,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-01-07 05:00:28,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-07 05:00:28,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2021-01-07 05:00:28,735 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 22 [2021-01-07 05:00:28,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:28,735 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2021-01-07 05:00:28,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:00:28,735 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2021-01-07 05:00:28,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-07 05:00:28,736 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:28,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:28,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-07 05:00:28,736 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]=== [2021-01-07 05:00:28,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:28,737 INFO L82 PathProgramCache]: Analyzing trace with hash 2105344662, now seen corresponding path program 1 times [2021-01-07 05:00:28,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:28,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367526495] [2021-01-07 05:00:28,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:28,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:28,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367526495] [2021-01-07 05:00:28,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:28,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-07 05:00:28,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770826060] [2021-01-07 05:00:28,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:00:28,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:28,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:00:28,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:00:28,900 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 8 states. [2021-01-07 05:00:29,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:29,031 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2021-01-07 05:00:29,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:00:29,032 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2021-01-07 05:00:29,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:29,033 INFO L225 Difference]: With dead ends: 74 [2021-01-07 05:00:29,033 INFO L226 Difference]: Without dead ends: 62 [2021-01-07 05:00:29,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:00:29,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-01-07 05:00:29,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2021-01-07 05:00:29,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-01-07 05:00:29,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2021-01-07 05:00:29,037 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 22 [2021-01-07 05:00:29,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:29,037 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2021-01-07 05:00:29,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:00:29,037 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2021-01-07 05:00:29,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-07 05:00:29,038 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:29,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:29,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-07 05:00:29,039 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]=== [2021-01-07 05:00:29,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:29,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1877695219, now seen corresponding path program 1 times [2021-01-07 05:00:29,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:29,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351631134] [2021-01-07 05:00:29,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:29,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:29,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351631134] [2021-01-07 05:00:29,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:29,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-07 05:00:29,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445458626] [2021-01-07 05:00:29,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:00:29,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:29,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:00:29,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:00:29,184 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 9 states. [2021-01-07 05:00:29,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:29,342 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2021-01-07 05:00:29,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:00:29,343 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2021-01-07 05:00:29,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:29,344 INFO L225 Difference]: With dead ends: 75 [2021-01-07 05:00:29,344 INFO L226 Difference]: Without dead ends: 75 [2021-01-07 05:00:29,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:00:29,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-01-07 05:00:29,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2021-01-07 05:00:29,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-01-07 05:00:29,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2021-01-07 05:00:29,347 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 26 [2021-01-07 05:00:29,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:29,347 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2021-01-07 05:00:29,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:00:29,347 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2021-01-07 05:00:29,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-07 05:00:29,348 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:29,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:29,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-01-07 05:00:29,349 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]=== [2021-01-07 05:00:29,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:29,349 INFO L82 PathProgramCache]: Analyzing trace with hash 72256885, now seen corresponding path program 1 times [2021-01-07 05:00:29,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:29,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042167938] [2021-01-07 05:00:29,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:29,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:29,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042167938] [2021-01-07 05:00:29,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:29,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-01-07 05:00:29,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408529459] [2021-01-07 05:00:29,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:00:29,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:29,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:00:29,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:00:29,505 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand 11 states. [2021-01-07 05:00:29,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:29,720 INFO L93 Difference]: Finished difference Result 96 states and 107 transitions. [2021-01-07 05:00:29,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-07 05:00:29,720 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2021-01-07 05:00:29,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:29,723 INFO L225 Difference]: With dead ends: 96 [2021-01-07 05:00:29,723 INFO L226 Difference]: Without dead ends: 96 [2021-01-07 05:00:29,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-01-07 05:00:29,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-01-07 05:00:29,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 74. [2021-01-07 05:00:29,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-01-07 05:00:29,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2021-01-07 05:00:29,735 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 26 [2021-01-07 05:00:29,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:29,735 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2021-01-07 05:00:29,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-07 05:00:29,735 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2021-01-07 05:00:29,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-07 05:00:29,737 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:29,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:29,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-01-07 05:00:29,738 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]=== [2021-01-07 05:00:29,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:29,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1740534735, now seen corresponding path program 1 times [2021-01-07 05:00:29,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:29,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719158397] [2021-01-07 05:00:29,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:29,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:29,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719158397] [2021-01-07 05:00:29,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:29,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-01-07 05:00:29,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136264089] [2021-01-07 05:00:29,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-07 05:00:29,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:29,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-07 05:00:29,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:00:29,842 INFO L87 Difference]: Start difference. First operand 74 states and 85 transitions. Second operand 10 states. [2021-01-07 05:00:30,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:30,034 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2021-01-07 05:00:30,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-07 05:00:30,034 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2021-01-07 05:00:30,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:30,035 INFO L225 Difference]: With dead ends: 75 [2021-01-07 05:00:30,035 INFO L226 Difference]: Without dead ends: 51 [2021-01-07 05:00:30,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-01-07 05:00:30,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-01-07 05:00:30,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2021-01-07 05:00:30,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-01-07 05:00:30,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2021-01-07 05:00:30,038 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 27 [2021-01-07 05:00:30,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:30,039 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2021-01-07 05:00:30,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-07 05:00:30,039 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2021-01-07 05:00:30,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-07 05:00:30,039 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:30,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:30,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-01-07 05:00:30,040 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]=== [2021-01-07 05:00:30,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:30,041 INFO L82 PathProgramCache]: Analyzing trace with hash -145898734, now seen corresponding path program 1 times [2021-01-07 05:00:30,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:30,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057524160] [2021-01-07 05:00:30,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:30,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057524160] [2021-01-07 05:00:30,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575811660] [2021-01-07 05:00:30,185 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 [2021-01-07 05:00:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:30,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-07 05:00:30,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:30,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:30,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:30,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2021-01-07 05:00:30,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920722232] [2021-01-07 05:00:30,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-07 05:00:30,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:30,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-07 05:00:30,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:00:30,381 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 16 states. [2021-01-07 05:00:30,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:30,567 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2021-01-07 05:00:30,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:00:30,567 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2021-01-07 05:00:30,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:30,568 INFO L225 Difference]: With dead ends: 71 [2021-01-07 05:00:30,568 INFO L226 Difference]: Without dead ends: 69 [2021-01-07 05:00:30,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:00:30,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-01-07 05:00:30,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 55. [2021-01-07 05:00:30,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-07 05:00:30,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2021-01-07 05:00:30,571 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 30 [2021-01-07 05:00:30,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:30,572 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2021-01-07 05:00:30,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-07 05:00:30,573 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2021-01-07 05:00:30,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-07 05:00:30,573 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:30,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:30,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-07 05:00:30,789 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]=== [2021-01-07 05:00:30,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:30,790 INFO L82 PathProgramCache]: Analyzing trace with hash 36573013, now seen corresponding path program 1 times [2021-01-07 05:00:30,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:30,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652504111] [2021-01-07 05:00:30,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:30,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:30,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652504111] [2021-01-07 05:00:30,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379381963] [2021-01-07 05:00:30,904 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 [2021-01-07 05:00:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:30,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-07 05:00:30,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:30,982 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_24|], 1=[|v_#valid_31|]} [2021-01-07 05:00:30,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:00:30,988 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 [2021-01-07 05:00:30,989 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:30,997 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:31,003 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 [2021-01-07 05:00:31,007 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:31,014 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:31,020 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:31,020 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2021-01-07 05:00:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:31,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:31,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-01-07 05:00:31,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582879573] [2021-01-07 05:00:31,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-07 05:00:31,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:31,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-07 05:00:31,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:00:31,161 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 12 states. [2021-01-07 05:00:31,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:31,363 INFO L93 Difference]: Finished difference Result 117 states and 131 transitions. [2021-01-07 05:00:31,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:00:31,364 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2021-01-07 05:00:31,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:31,364 INFO L225 Difference]: With dead ends: 117 [2021-01-07 05:00:31,365 INFO L226 Difference]: Without dead ends: 117 [2021-01-07 05:00:31,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:00:31,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-01-07 05:00:31,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 81. [2021-01-07 05:00:31,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-01-07 05:00:31,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2021-01-07 05:00:31,368 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 33 [2021-01-07 05:00:31,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:31,368 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2021-01-07 05:00:31,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-07 05:00:31,368 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2021-01-07 05:00:31,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-07 05:00:31,369 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:31,369 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:31,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:31,585 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]=== [2021-01-07 05:00:31,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:31,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1001387738, now seen corresponding path program 2 times [2021-01-07 05:00:31,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:31,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131452243] [2021-01-07 05:00:31,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:31,879 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:31,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131452243] [2021-01-07 05:00:31,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763072581] [2021-01-07 05:00:31,879 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:31,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:00:31,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:31,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-07 05:00:31,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:32,043 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 [2021-01-07 05:00:32,044 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:32,049 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:32,051 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. [2021-01-07 05:00:32,051 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:00:32,415 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:32,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:32,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2021-01-07 05:00:32,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649585811] [2021-01-07 05:00:32,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-07 05:00:32,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:32,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-07 05:00:32,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:00:32,418 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand 23 states. [2021-01-07 05:00:33,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:33,026 INFO L93 Difference]: Finished difference Result 128 states and 142 transitions. [2021-01-07 05:00:33,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-07 05:00:33,027 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 36 [2021-01-07 05:00:33,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:33,028 INFO L225 Difference]: With dead ends: 128 [2021-01-07 05:00:33,028 INFO L226 Difference]: Without dead ends: 122 [2021-01-07 05:00:33,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=207, Invalid=849, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 05:00:33,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-01-07 05:00:33,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 117. [2021-01-07 05:00:33,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2021-01-07 05:00:33,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 133 transitions. [2021-01-07 05:00:33,044 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 133 transitions. Word has length 36 [2021-01-07 05:00:33,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:33,044 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 133 transitions. [2021-01-07 05:00:33,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-07 05:00:33,044 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 133 transitions. [2021-01-07 05:00:33,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-07 05:00:33,045 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:33,045 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:33,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-01-07 05:00:33,246 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]=== [2021-01-07 05:00:33,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:33,247 INFO L82 PathProgramCache]: Analyzing trace with hash -304963965, now seen corresponding path program 3 times [2021-01-07 05:00:33,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:33,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576335277] [2021-01-07 05:00:33,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:33,373 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:33,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576335277] [2021-01-07 05:00:33,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624871063] [2021-01-07 05:00:33,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:33,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-07 05:00:33,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:33,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-07 05:00:33,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:33,470 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:33,471 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 [2021-01-07 05:00:33,475 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:33,489 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:00:33,491 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:33,491 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:00:33,524 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 [2021-01-07 05:00:33,524 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:33,527 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:33,528 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:33,528 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-07 05:00:33,594 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:33,595 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-01-07 05:00:33,596 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:00:33,600 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:33,601 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-01-07 05:00:33,601 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:12 [2021-01-07 05:00:33,621 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:00:33,623 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:00:33,725 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-07 05:00:33,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:33,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-01-07 05:00:33,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189367437] [2021-01-07 05:00:33,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-07 05:00:33,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:33,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-07 05:00:33,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-01-07 05:00:33,728 INFO L87 Difference]: Start difference. First operand 117 states and 133 transitions. Second operand 19 states. [2021-01-07 05:00:34,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:34,633 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2021-01-07 05:00:34,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-07 05:00:34,634 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 40 [2021-01-07 05:00:34,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:34,635 INFO L225 Difference]: With dead ends: 136 [2021-01-07 05:00:34,635 INFO L226 Difference]: Without dead ends: 134 [2021-01-07 05:00:34,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=304, Invalid=886, Unknown=0, NotChecked=0, Total=1190 [2021-01-07 05:00:34,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-01-07 05:00:34,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 86. [2021-01-07 05:00:34,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-01-07 05:00:34,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2021-01-07 05:00:34,640 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 40 [2021-01-07 05:00:34,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:34,641 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 93 transitions. [2021-01-07 05:00:34,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-07 05:00:34,641 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions. [2021-01-07 05:00:34,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-07 05:00:34,641 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:34,641 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:34,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:34,855 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]=== [2021-01-07 05:00:34,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:34,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1930803928, now seen corresponding path program 2 times [2021-01-07 05:00:34,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:34,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532053921] [2021-01-07 05:00:34,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:35,135 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:35,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532053921] [2021-01-07 05:00:35,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851572048] [2021-01-07 05:00:35,135 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 [2021-01-07 05:00:35,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:00:35,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:35,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 70 conjunts are in the unsatisfiable core [2021-01-07 05:00:35,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:35,233 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 [2021-01-07 05:00:35,234 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:35,238 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:35,238 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:35,238 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-07 05:00:35,318 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 10 [2021-01-07 05:00:35,318 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:35,324 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:35,327 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. [2021-01-07 05:00:35,327 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2021-01-07 05:00:35,363 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-01-07 05:00:35,364 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:35,371 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:35,373 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:00:35,374 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:31 [2021-01-07 05:00:35,857 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2021-01-07 05:00:36,536 INFO L348 Elim1Store]: treesize reduction 10, result has 78.3 percent of original size [2021-01-07 05:00:36,537 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 56 treesize of output 55 [2021-01-07 05:00:36,540 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:36,561 INFO L625 ElimStorePlain]: treesize reduction 9, result has 71.0 percent of original size [2021-01-07 05:00:36,566 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:36,567 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:66, output treesize:8 [2021-01-07 05:00:36,632 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:36,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:36,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 22] total 30 [2021-01-07 05:00:36,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871695100] [2021-01-07 05:00:36,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-01-07 05:00:36,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:36,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-01-07 05:00:36,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2021-01-07 05:00:36,634 INFO L87 Difference]: Start difference. First operand 86 states and 93 transitions. Second operand 30 states. [2021-01-07 05:00:37,894 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-01-07 05:00:38,084 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2021-01-07 05:00:38,285 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-01-07 05:00:38,605 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2021-01-07 05:00:38,777 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2021-01-07 05:00:38,937 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-01-07 05:00:39,090 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2021-01-07 05:00:39,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:39,310 INFO L93 Difference]: Finished difference Result 150 states and 159 transitions. [2021-01-07 05:00:39,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-07 05:00:39,311 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 46 [2021-01-07 05:00:39,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:39,312 INFO L225 Difference]: With dead ends: 150 [2021-01-07 05:00:39,312 INFO L226 Difference]: Without dead ends: 93 [2021-01-07 05:00:39,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=465, Invalid=2085, Unknown=0, NotChecked=0, Total=2550 [2021-01-07 05:00:39,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-01-07 05:00:39,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2021-01-07 05:00:39,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-01-07 05:00:39,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 97 transitions. [2021-01-07 05:00:39,316 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 97 transitions. Word has length 46 [2021-01-07 05:00:39,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:39,317 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 97 transitions. [2021-01-07 05:00:39,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-01-07 05:00:39,317 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 97 transitions. [2021-01-07 05:00:39,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-07 05:00:39,317 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:39,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:39,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-07 05:00:39,519 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]=== [2021-01-07 05:00:39,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:39,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1006205749, now seen corresponding path program 3 times [2021-01-07 05:00:39,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:39,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692422421] [2021-01-07 05:00:39,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:39,636 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:39,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692422421] [2021-01-07 05:00:39,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714970839] [2021-01-07 05:00:39,636 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 [2021-01-07 05:00:39,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-07 05:00:39,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:39,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-07 05:00:39,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:39,880 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:39,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:39,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-01-07 05:00:39,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593743326] [2021-01-07 05:00:39,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-07 05:00:39,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:39,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-07 05:00:39,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:00:39,882 INFO L87 Difference]: Start difference. First operand 90 states and 97 transitions. Second operand 17 states. [2021-01-07 05:00:40,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:40,073 INFO L93 Difference]: Finished difference Result 136 states and 145 transitions. [2021-01-07 05:00:40,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:00:40,075 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 50 [2021-01-07 05:00:40,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:40,076 INFO L225 Difference]: With dead ends: 136 [2021-01-07 05:00:40,076 INFO L226 Difference]: Without dead ends: 136 [2021-01-07 05:00:40,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-01-07 05:00:40,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-01-07 05:00:40,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 116. [2021-01-07 05:00:40,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-01-07 05:00:40,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 124 transitions. [2021-01-07 05:00:40,080 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 124 transitions. Word has length 50 [2021-01-07 05:00:40,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:40,080 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 124 transitions. [2021-01-07 05:00:40,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-07 05:00:40,081 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 124 transitions. [2021-01-07 05:00:40,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-07 05:00:40,081 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:40,081 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:40,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-07 05:00:40,297 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]=== [2021-01-07 05:00:40,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:40,298 INFO L82 PathProgramCache]: Analyzing trace with hash 276863736, now seen corresponding path program 4 times [2021-01-07 05:00:40,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:40,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806935420] [2021-01-07 05:00:40,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:41,109 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:41,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806935420] [2021-01-07 05:00:41,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247280007] [2021-01-07 05:00:41,110 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 [2021-01-07 05:00:41,179 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:00:41,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:41,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 46 conjunts are in the unsatisfiable core [2021-01-07 05:00:41,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:41,195 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_27|], 1=[|v_#valid_33|]} [2021-01-07 05:00:41,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:00:41,199 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 [2021-01-07 05:00:41,200 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:41,207 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:41,212 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 [2021-01-07 05:00:41,219 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:41,225 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:41,226 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:41,226 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:21 [2021-01-07 05:00:41,419 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2021-01-07 05:00:41,420 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:41,426 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:41,427 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:41,427 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:26 [2021-01-07 05:00:41,487 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2021-01-07 05:00:41,488 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:41,495 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:41,496 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:00:41,497 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:33 [2021-01-07 05:00:42,000 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-01-07 05:00:42,004 INFO L547 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:00:42,014 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:42,017 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-01-07 05:00:42,017 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:35 [2021-01-07 05:00:44,602 WARN L197 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 44 [2021-01-07 05:00:44,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:00:44,794 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:44,795 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 44 [2021-01-07 05:00:44,797 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:44,837 INFO L625 ElimStorePlain]: treesize reduction 3, result has 93.8 percent of original size [2021-01-07 05:00:44,844 INFO L547 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:44,844 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:57, output treesize:8 [2021-01-07 05:00:44,937 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 20 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:44,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:44,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 19] total 43 [2021-01-07 05:00:44,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384708683] [2021-01-07 05:00:44,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-01-07 05:00:44,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:44,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-01-07 05:00:44,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1696, Unknown=0, NotChecked=0, Total=1806 [2021-01-07 05:00:44,939 INFO L87 Difference]: Start difference. First operand 116 states and 124 transitions. Second operand 43 states. [2021-01-07 05:00:46,350 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2021-01-07 05:00:46,945 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-01-07 05:00:49,299 WARN L197 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2021-01-07 05:00:49,550 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2021-01-07 05:00:52,006 WARN L197 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2021-01-07 05:00:54,421 WARN L197 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2021-01-07 05:00:54,853 WARN L197 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2021-01-07 05:00:57,397 WARN L197 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2021-01-07 05:00:58,043 WARN L197 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2021-01-07 05:00:58,301 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2021-01-07 05:00:58,981 WARN L197 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2021-01-07 05:01:01,302 WARN L197 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2021-01-07 05:01:02,363 WARN L197 SmtUtils]: Spent 924.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2021-01-07 05:01:02,936 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 77 [2021-01-07 05:01:03,290 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2021-01-07 05:01:03,685 WARN L197 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2021-01-07 05:01:04,037 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2021-01-07 05:01:04,473 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2021-01-07 05:01:06,963 WARN L197 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2021-01-07 05:01:15,459 WARN L197 SmtUtils]: Spent 8.32 s on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2021-01-07 05:01:17,835 WARN L197 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2021-01-07 05:01:18,316 WARN L197 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 76 [2021-01-07 05:01:18,725 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2021-01-07 05:01:19,216 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-01-07 05:01:19,731 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2021-01-07 05:01:19,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:19,772 INFO L93 Difference]: Finished difference Result 218 states and 230 transitions. [2021-01-07 05:01:19,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-01-07 05:01:19,773 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 63 [2021-01-07 05:01:19,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:19,774 INFO L225 Difference]: With dead ends: 218 [2021-01-07 05:01:19,774 INFO L226 Difference]: Without dead ends: 123 [2021-01-07 05:01:19,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 36.9s TimeCoverageRelationStatistics Valid=1106, Invalid=5866, Unknown=0, NotChecked=0, Total=6972 [2021-01-07 05:01:19,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-01-07 05:01:19,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 120. [2021-01-07 05:01:19,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2021-01-07 05:01:19,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2021-01-07 05:01:19,781 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 63 [2021-01-07 05:01:19,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:19,781 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2021-01-07 05:01:19,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2021-01-07 05:01:19,781 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2021-01-07 05:01:19,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-07 05:01:19,782 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:19,782 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1] [2021-01-07 05:01:19,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-01-07 05:01:19,996 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]=== [2021-01-07 05:01:19,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:19,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1668022213, now seen corresponding path program 5 times [2021-01-07 05:01:19,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:19,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631418960] [2021-01-07 05:01:19,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:20,160 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:01:20,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631418960] [2021-01-07 05:01:20,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079474269] [2021-01-07 05:01:20,160 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:20,240 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-01-07 05:01:20,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:20,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-07 05:01:20,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:20,512 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:01:20,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:20,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-01-07 05:01:20,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451104582] [2021-01-07 05:01:20,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-07 05:01:20,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:20,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-07 05:01:20,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:01:20,515 INFO L87 Difference]: Start difference. First operand 120 states and 128 transitions. Second operand 21 states. [2021-01-07 05:01:20,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:20,925 INFO L93 Difference]: Finished difference Result 166 states and 176 transitions. [2021-01-07 05:01:20,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:01:20,925 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 67 [2021-01-07 05:01:20,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:20,926 INFO L225 Difference]: With dead ends: 166 [2021-01-07 05:01:20,926 INFO L226 Difference]: Without dead ends: 166 [2021-01-07 05:01:20,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2021-01-07 05:01:20,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-01-07 05:01:20,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 146. [2021-01-07 05:01:20,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-01-07 05:01:20,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 155 transitions. [2021-01-07 05:01:20,931 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 155 transitions. Word has length 67 [2021-01-07 05:01:20,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:20,931 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 155 transitions. [2021-01-07 05:01:20,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-07 05:01:20,932 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 155 transitions. [2021-01-07 05:01:20,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-07 05:01:20,933 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:20,933 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:21,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-07 05:01:21,149 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]=== [2021-01-07 05:01:21,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:21,150 INFO L82 PathProgramCache]: Analyzing trace with hash 2132340658, now seen corresponding path program 6 times [2021-01-07 05:01:21,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:21,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514684672] [2021-01-07 05:01:21,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:21,687 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 7 proven. 90 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:01:21,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514684672] [2021-01-07 05:01:21,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372763393] [2021-01-07 05:01:21,688 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:21,794 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-07 05:01:21,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:21,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 89 conjunts are in the unsatisfiable core [2021-01-07 05:01:21,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:21,809 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 [2021-01-07 05:01:21,811 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:21,815 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:21,816 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:21,816 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-07 05:01:22,107 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 10 [2021-01-07 05:01:22,108 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:22,116 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:22,117 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. [2021-01-07 05:01:22,117 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2021-01-07 05:01:22,191 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-01-07 05:01:22,195 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:22,205 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:22,207 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:01:22,208 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:34 [2021-01-07 05:01:27,335 WARN L197 SmtUtils]: Spent 931.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-01-07 05:01:34,480 INFO L348 Elim1Store]: treesize reduction 32, result has 60.0 percent of original size [2021-01-07 05:01:34,481 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 65 treesize of output 71 [2021-01-07 05:01:34,483 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:34,485 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:34,514 INFO L625 ElimStorePlain]: treesize reduction 5, result has 85.7 percent of original size [2021-01-07 05:01:34,517 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:34,518 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:75, output treesize:8 [2021-01-07 05:01:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 28 proven. 65 refuted. 4 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:01:34,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:34,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 29] total 50 [2021-01-07 05:01:34,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871197311] [2021-01-07 05:01:34,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-01-07 05:01:34,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:34,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-01-07 05:01:34,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=2303, Unknown=7, NotChecked=0, Total=2450 [2021-01-07 05:01:34,679 INFO L87 Difference]: Start difference. First operand 146 states and 155 transitions. Second operand 50 states. [2021-01-07 05:01:36,724 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2021-01-07 05:01:36,965 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2021-01-07 05:01:37,200 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2021-01-07 05:01:37,542 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2021-01-07 05:01:37,834 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2021-01-07 05:01:38,117 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2021-01-07 05:01:38,319 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2021-01-07 05:01:38,547 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2021-01-07 05:01:38,798 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2021-01-07 05:01:39,042 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-01-07 05:01:39,283 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-01-07 05:01:39,735 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2021-01-07 05:01:40,011 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-01-07 05:01:40,290 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2021-01-07 05:01:40,596 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2021-01-07 05:01:40,957 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2021-01-07 05:01:41,324 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2021-01-07 05:01:41,581 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2021-01-07 05:01:41,806 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-01-07 05:01:42,125 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2021-01-07 05:01:42,325 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2021-01-07 05:01:42,611 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2021-01-07 05:01:42,821 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2021-01-07 05:01:43,127 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2021-01-07 05:01:43,359 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2021-01-07 05:01:43,577 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2021-01-07 05:01:43,806 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-01-07 05:01:44,143 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2021-01-07 05:01:44,437 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-01-07 05:01:44,704 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2021-01-07 05:01:44,928 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-01-07 05:01:45,186 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2021-01-07 05:01:45,426 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-01-07 05:01:45,622 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2021-01-07 05:01:45,835 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-01-07 05:01:46,049 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2021-01-07 05:01:46,268 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2021-01-07 05:01:46,540 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2021-01-07 05:01:46,817 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2021-01-07 05:01:47,124 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 69 [2021-01-07 05:01:47,454 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 73 [2021-01-07 05:01:47,847 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 74 [2021-01-07 05:01:48,522 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2021-01-07 05:01:48,796 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-01-07 05:01:49,057 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2021-01-07 05:01:49,293 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-01-07 05:01:49,629 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2021-01-07 05:01:49,865 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2021-01-07 05:01:50,213 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-01-07 05:01:50,531 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2021-01-07 05:01:50,804 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2021-01-07 05:01:51,030 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2021-01-07 05:01:51,255 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-01-07 05:01:51,525 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2021-01-07 05:01:52,193 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2021-01-07 05:01:52,400 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-01-07 05:01:52,652 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-01-07 05:01:52,872 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-01-07 05:01:53,207 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2021-01-07 05:01:53,512 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2021-01-07 05:01:53,772 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2021-01-07 05:01:54,034 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-01-07 05:01:54,258 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-01-07 05:01:54,492 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-01-07 05:01:54,735 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2021-01-07 05:01:54,946 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2021-01-07 05:01:55,171 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2021-01-07 05:01:55,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:55,311 INFO L93 Difference]: Finished difference Result 389 states and 409 transitions. [2021-01-07 05:01:55,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-01-07 05:01:55,312 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 80 [2021-01-07 05:01:55,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:55,313 INFO L225 Difference]: With dead ends: 389 [2021-01-07 05:01:55,313 INFO L226 Difference]: Without dead ends: 310 [2021-01-07 05:01:55,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4550 ImplicationChecksByTransitivity, 30.1s TimeCoverageRelationStatistics Valid=2345, Invalid=15738, Unknown=7, NotChecked=0, Total=18090 [2021-01-07 05:01:55,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-01-07 05:01:55,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 273. [2021-01-07 05:01:55,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2021-01-07 05:01:55,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 295 transitions. [2021-01-07 05:01:55,328 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 295 transitions. Word has length 80 [2021-01-07 05:01:55,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:55,328 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 295 transitions. [2021-01-07 05:01:55,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2021-01-07 05:01:55,328 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 295 transitions. [2021-01-07 05:01:55,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-01-07 05:01:55,330 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:55,330 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1] [2021-01-07 05:01:55,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:55,545 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]=== [2021-01-07 05:01:55,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:55,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1003116751, now seen corresponding path program 7 times [2021-01-07 05:01:55,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:55,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226755347] [2021-01-07 05:01:55,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:55,788 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 6 proven. 104 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:01:55,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226755347] [2021-01-07 05:01:55,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137430831] [2021-01-07 05:01:55,789 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:55,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 41 conjunts are in the unsatisfiable core [2021-01-07 05:01:55,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:55,909 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_28|], 1=[|v_#valid_35|]} [2021-01-07 05:01:55,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:01:55,914 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 [2021-01-07 05:01:55,914 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:55,925 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:55,929 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 [2021-01-07 05:01:55,931 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:55,942 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:55,944 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:55,944 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2021-01-07 05:01:56,357 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 15 proven. 95 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:01:56,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:56,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-01-07 05:01:56,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097326933] [2021-01-07 05:01:56,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-07 05:01:56,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:56,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-07 05:01:56,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:01:56,359 INFO L87 Difference]: Start difference. First operand 273 states and 295 transitions. Second operand 23 states. [2021-01-07 05:01:57,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:57,248 INFO L93 Difference]: Finished difference Result 321 states and 343 transitions. [2021-01-07 05:01:57,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-07 05:01:57,249 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 84 [2021-01-07 05:01:57,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:57,250 INFO L225 Difference]: With dead ends: 321 [2021-01-07 05:01:57,251 INFO L226 Difference]: Without dead ends: 321 [2021-01-07 05:01:57,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=191, Invalid=865, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 05:01:57,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-01-07 05:01:57,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 299. [2021-01-07 05:01:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2021-01-07 05:01:57,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 322 transitions. [2021-01-07 05:01:57,258 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 322 transitions. Word has length 84 [2021-01-07 05:01:57,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:57,258 INFO L481 AbstractCegarLoop]: Abstraction has 299 states and 322 transitions. [2021-01-07 05:01:57,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-07 05:01:57,258 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 322 transitions. [2021-01-07 05:01:57,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-01-07 05:01:57,260 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:57,260 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:57,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:57,471 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]=== [2021-01-07 05:01:57,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:57,471 INFO L82 PathProgramCache]: Analyzing trace with hash 281182567, now seen corresponding path program 1 times [2021-01-07 05:01:57,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:57,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000510344] [2021-01-07 05:01:57,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:58,563 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 67 proven. 78 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-01-07 05:01:58,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000510344] [2021-01-07 05:01:58,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143504459] [2021-01-07 05:01:58,564 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:58,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 54 conjunts are in the unsatisfiable core [2021-01-07 05:01:58,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:58,680 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 [2021-01-07 05:01:58,682 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:58,686 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:58,687 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:58,687 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-07 05:01:58,975 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 10 [2021-01-07 05:01:58,976 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:58,985 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:58,986 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. [2021-01-07 05:01:58,986 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2021-01-07 05:01:59,060 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-01-07 05:01:59,061 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:59,072 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:59,074 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-01-07 05:01:59,074 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:35, output treesize:31 [2021-01-07 05:02:04,591 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:04,592 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 70 [2021-01-07 05:02:04,594 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:04,644 INFO L625 ElimStorePlain]: treesize reduction 21, result has 65.6 percent of original size [2021-01-07 05:02:04,648 INFO L547 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:04,648 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:53, output treesize:8 [2021-01-07 05:02:04,833 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 10 proven. 132 refuted. 2 times theorem prover too weak. 13 trivial. 0 not checked. [2021-01-07 05:02:04,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:04,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2021-01-07 05:02:04,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079966462] [2021-01-07 05:02:04,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-01-07 05:02:04,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:04,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-01-07 05:02:04,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1313, Unknown=2, NotChecked=0, Total=1406 [2021-01-07 05:02:04,837 INFO L87 Difference]: Start difference. First operand 299 states and 322 transitions. Second operand 38 states. [2021-01-07 05:02:11,807 WARN L197 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2021-01-07 05:02:16,065 WARN L197 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2021-01-07 05:02:20,410 WARN L197 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2021-01-07 05:02:23,441 WARN L197 SmtUtils]: Spent 2.88 s on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2021-01-07 05:02:27,768 WARN L197 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2021-01-07 05:02:30,181 WARN L197 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2021-01-07 05:02:32,634 WARN L197 SmtUtils]: Spent 2.37 s on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2021-01-07 05:02:36,812 WARN L197 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2021-01-07 05:02:36,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:36,827 INFO L93 Difference]: Finished difference Result 318 states and 335 transitions. [2021-01-07 05:02:36,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-07 05:02:36,828 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 96 [2021-01-07 05:02:36,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:36,830 INFO L225 Difference]: With dead ends: 318 [2021-01-07 05:02:36,830 INFO L226 Difference]: Without dead ends: 179 [2021-01-07 05:02:36,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 36.6s TimeCoverageRelationStatistics Valid=486, Invalid=3544, Unknown=2, NotChecked=0, Total=4032 [2021-01-07 05:02:36,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-01-07 05:02:36,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 176. [2021-01-07 05:02:36,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2021-01-07 05:02:36,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 186 transitions. [2021-01-07 05:02:36,836 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 186 transitions. Word has length 96 [2021-01-07 05:02:36,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:36,836 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 186 transitions. [2021-01-07 05:02:36,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2021-01-07 05:02:36,837 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 186 transitions. [2021-01-07 05:02:36,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-01-07 05:02:36,837 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:36,838 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:02:37,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-01-07 05:02:37,053 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]=== [2021-01-07 05:02:37,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:37,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1725290594, now seen corresponding path program 8 times [2021-01-07 05:02:37,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:37,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011715393] [2021-01-07 05:02:37,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 9 proven. 154 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:02:37,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011715393] [2021-01-07 05:02:37,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727206058] [2021-01-07 05:02:37,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:02:37,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:02:37,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:02:37,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 48 conjunts are in the unsatisfiable core [2021-01-07 05:02:37,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:02:37,930 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 [2021-01-07 05:02:37,935 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:37,939 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:37,939 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:37,939 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-07 05:02:38,235 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 10 [2021-01-07 05:02:38,236 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:38,247 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:38,249 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. [2021-01-07 05:02:38,249 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:25 [2021-01-07 05:02:38,345 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-01-07 05:02:38,347 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:38,359 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:38,362 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-01-07 05:02:38,362 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:39, output treesize:35 [2021-01-07 05:02:39,540 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:39,540 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2021-01-07 05:02:39,542 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:02:39,563 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:39,565 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:02:39,567 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:02:39,568 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:39,569 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:50, output treesize:27 [2021-01-07 05:02:39,940 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 15 proven. 148 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:02:39,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:39,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 17] total 41 [2021-01-07 05:02:39,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135714493] [2021-01-07 05:02:39,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-01-07 05:02:39,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:39,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-01-07 05:02:39,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1538, Unknown=0, NotChecked=0, Total=1640 [2021-01-07 05:02:39,944 INFO L87 Difference]: Start difference. First operand 176 states and 186 transitions. Second operand 41 states. [2021-01-07 05:02:41,184 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-01-07 05:02:42,064 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-01-07 05:02:42,333 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2021-01-07 05:02:42,626 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2021-01-07 05:02:42,909 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2021-01-07 05:02:43,231 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2021-01-07 05:02:44,387 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-01-07 05:02:44,698 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-01-07 05:02:44,974 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2021-01-07 05:02:49,047 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2021-01-07 05:02:50,412 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2021-01-07 05:02:51,371 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2021-01-07 05:02:51,987 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2021-01-07 05:02:52,306 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2021-01-07 05:02:53,412 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2021-01-07 05:02:55,742 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-01-07 05:02:56,071 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-01-07 05:02:57,169 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2021-01-07 05:02:57,505 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2021-01-07 05:02:57,783 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-01-07 05:03:00,065 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-01-07 05:03:03,483 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2021-01-07 05:03:06,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:03:06,722 INFO L93 Difference]: Finished difference Result 458 states and 483 transitions. [2021-01-07 05:03:06,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-01-07 05:03:06,722 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 97 [2021-01-07 05:03:06,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:03:06,724 INFO L225 Difference]: With dead ends: 458 [2021-01-07 05:03:06,724 INFO L226 Difference]: Without dead ends: 389 [2021-01-07 05:03:06,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=923, Invalid=5556, Unknown=1, NotChecked=0, Total=6480 [2021-01-07 05:03:06,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-01-07 05:03:06,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 281. [2021-01-07 05:03:06,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2021-01-07 05:03:06,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 298 transitions. [2021-01-07 05:03:06,734 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 298 transitions. Word has length 97 [2021-01-07 05:03:06,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:03:06,734 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 298 transitions. [2021-01-07 05:03:06,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2021-01-07 05:03:06,735 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 298 transitions. [2021-01-07 05:03:06,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-01-07 05:03:06,736 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:03:06,736 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:03:06,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:03:06,946 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]=== [2021-01-07 05:03:06,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:03:06,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1378974092, now seen corresponding path program 9 times [2021-01-07 05:03:06,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:03:06,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143194146] [2021-01-07 05:03:06,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:03:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:03:08,094 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 11 proven. 235 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:03:08,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143194146] [2021-01-07 05:03:08,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691524119] [2021-01-07 05:03:08,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:03:08,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-07 05:03:08,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:03:08,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 65 conjunts are in the unsatisfiable core [2021-01-07 05:03:08,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:03:08,319 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 [2021-01-07 05:03:08,321 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:08,326 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:08,327 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:08,327 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-07 05:03:08,820 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 10 [2021-01-07 05:03:08,821 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:08,831 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:08,833 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. [2021-01-07 05:03:08,833 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2021-01-07 05:03:08,945 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-01-07 05:03:08,950 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:08,963 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:08,964 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-01-07 05:03:08,965 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:35, output treesize:31 [2021-01-07 05:03:11,444 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:11,445 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 70 [2021-01-07 05:03:11,451 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:11,512 INFO L625 ElimStorePlain]: treesize reduction 21, result has 65.6 percent of original size [2021-01-07 05:03:11,517 INFO L547 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:11,517 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:53, output treesize:8 [2021-01-07 05:03:11,774 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 11 proven. 235 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:03:11,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:03:11,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24] total 49 [2021-01-07 05:03:11,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905938021] [2021-01-07 05:03:11,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-01-07 05:03:11,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:03:11,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-01-07 05:03:11,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=2238, Unknown=0, NotChecked=0, Total=2352 [2021-01-07 05:03:11,777 INFO L87 Difference]: Start difference. First operand 281 states and 298 transitions. Second operand 49 states. [2021-01-07 05:03:18,779 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2021-01-07 05:03:23,069 WARN L197 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2021-01-07 05:03:27,328 WARN L197 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2021-01-07 05:03:31,579 WARN L197 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2021-01-07 05:03:36,012 WARN L197 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2021-01-07 05:03:40,276 WARN L197 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2021-01-07 05:03:44,506 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2021-01-07 05:03:49,281 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:03:53,729 WARN L197 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2021-01-07 05:03:58,869 WARN L197 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2021-01-07 05:04:03,943 WARN L197 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2021-01-07 05:04:08,312 WARN L197 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2021-01-07 05:04:12,625 WARN L197 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2021-01-07 05:04:17,100 WARN L197 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2021-01-07 05:04:21,481 WARN L197 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2021-01-07 05:04:34,158 WARN L197 SmtUtils]: Spent 12.37 s on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2021-01-07 05:04:39,082 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:04:43,828 WARN L197 SmtUtils]: Spent 4.43 s on a formula simplification. DAG size of input: 74 DAG size of output: 59