/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/openbsd_cstrncat-alloca-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:04:27,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:04:27,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:04:28,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:04:28,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:04:28,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:04:28,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:04:28,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:04:28,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:04:28,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:04:28,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:04:28,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:04:28,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:04:28,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:04:28,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:04:28,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:04:28,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:04:28,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:04:28,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:04:28,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:04:28,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:04:28,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:04:28,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:04:28,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:04:28,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:04:28,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:04:28,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:04:28,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:04:28,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:04:28,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:04:28,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:04:28,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:04:28,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:04:28,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:04:28,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:04:28,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:04:28,122 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 05:04:28,185 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:04:28,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:04:28,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:04:28,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:04:28,197 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:04:28,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:04:28,198 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:04:28,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:04:28,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:04:28,199 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:04:28,199 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:04:28,199 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:04:28,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:04:28,200 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:04:28,200 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:04:28,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:04:28,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:04:28,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:04:28,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:04:28,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:04:28,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:04:28,203 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:04:28,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:04:28,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:04:28,204 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:04:28,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:04:28,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:04:28,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:04:28,690 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:04:28,691 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:04:28,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstrncat-alloca-2.i [2021-01-07 05:04:28,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9761d3668/149bf07ef21445a398e5ff89cfbf874c/FLAG88f417ed8 [2021-01-07 05:04:29,653 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:04:29,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrncat-alloca-2.i [2021-01-07 05:04:29,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9761d3668/149bf07ef21445a398e5ff89cfbf874c/FLAG88f417ed8 [2021-01-07 05:04:29,829 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9761d3668/149bf07ef21445a398e5ff89cfbf874c [2021-01-07 05:04:29,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:04:29,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:04:29,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:04:29,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:04:29,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:04:29,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:04:29" (1/1) ... [2021-01-07 05:04:29,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66fd179a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:29, skipping insertion in model container [2021-01-07 05:04:29,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:04:29" (1/1) ... [2021-01-07 05:04:29,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:04:29,973 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: address: IdentifierExpression[~d~0,] left hand side expression in assignment: address: IdentifierExpression[~d~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: lhs: VariableLHS[~n~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,BinaryExpression[ARITHMINUS,IdentifierExpression[~length1~0,],IdentifierExpression[~n~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 05:04:30,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:04:30,588 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: IdentifierExpression[~d~0,] left hand side expression in assignment: address: IdentifierExpression[~d~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: lhs: VariableLHS[~n~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,BinaryExpression[ARITHMINUS,IdentifierExpression[~length1~0,],IdentifierExpression[~n~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 05:04:30,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:04:30,692 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:04:30,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30 WrapperNode [2021-01-07 05:04:30,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:04:30,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:04:30,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:04:30,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:04:30,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30" (1/1) ... [2021-01-07 05:04:30,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30" (1/1) ... [2021-01-07 05:04:30,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:04:30,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:04:30,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:04:30,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:04:30,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30" (1/1) ... [2021-01-07 05:04:30,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30" (1/1) ... [2021-01-07 05:04:30,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30" (1/1) ... [2021-01-07 05:04:30,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30" (1/1) ... [2021-01-07 05:04:30,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30" (1/1) ... [2021-01-07 05:04:30,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30" (1/1) ... [2021-01-07 05:04:30,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30" (1/1) ... [2021-01-07 05:04:30,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:04:30,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:04:30,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:04:30,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:04:30,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30" (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 05:04:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:04:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:04:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:04:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:04:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:04:30,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:04:31,613 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:04:31,614 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-07 05:04:31,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:04:31 BoogieIcfgContainer [2021-01-07 05:04:31,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:04:31,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:04:31,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:04:31,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:04:31,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:04:29" (1/3) ... [2021-01-07 05:04:31,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693bfbe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:04:31, skipping insertion in model container [2021-01-07 05:04:31,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30" (2/3) ... [2021-01-07 05:04:31,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693bfbe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:04:31, skipping insertion in model container [2021-01-07 05:04:31,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:04:31" (3/3) ... [2021-01-07 05:04:31,639 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cstrncat-alloca-2.i [2021-01-07 05:04:31,653 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:04:31,660 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2021-01-07 05:04:31,683 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-01-07 05:04:31,716 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:04:31,717 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:04:31,717 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:04:31,717 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:04:31,717 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:04:31,718 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:04:31,718 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:04:31,718 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:04:31,737 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2021-01-07 05:04:31,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:04:31,746 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:31,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:31,748 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:31,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:31,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1805031113, now seen corresponding path program 1 times [2021-01-07 05:04:31,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:31,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48851950] [2021-01-07 05:04:31,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:32,068 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 05:04:32,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48851950] [2021-01-07 05:04:32,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:32,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:04:32,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86568090] [2021-01-07 05:04:32,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:04:32,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:32,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:04:32,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:04:32,112 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2021-01-07 05:04:32,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:32,248 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2021-01-07 05:04:32,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:04:32,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-01-07 05:04:32,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:32,273 INFO L225 Difference]: With dead ends: 51 [2021-01-07 05:04:32,274 INFO L226 Difference]: Without dead ends: 48 [2021-01-07 05:04:32,278 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 05:04:32,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-01-07 05:04:32,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-01-07 05:04:32,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-01-07 05:04:32,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2021-01-07 05:04:32,345 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 7 [2021-01-07 05:04:32,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:32,346 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2021-01-07 05:04:32,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:04:32,346 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2021-01-07 05:04:32,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:04:32,347 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:32,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:32,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:04:32,350 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:32,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:32,354 INFO L82 PathProgramCache]: Analyzing trace with hash 121388915, now seen corresponding path program 1 times [2021-01-07 05:04:32,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:32,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011665550] [2021-01-07 05:04:32,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:32,503 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 05:04:32,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011665550] [2021-01-07 05:04:32,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:32,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:04:32,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398754428] [2021-01-07 05:04:32,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:04:32,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:32,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:04:32,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:04:32,532 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 5 states. [2021-01-07 05:04:32,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:32,657 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2021-01-07 05:04:32,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:04:32,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2021-01-07 05:04:32,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:32,659 INFO L225 Difference]: With dead ends: 51 [2021-01-07 05:04:32,659 INFO L226 Difference]: Without dead ends: 48 [2021-01-07 05:04:32,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:04:32,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-01-07 05:04:32,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-01-07 05:04:32,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-01-07 05:04:32,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2021-01-07 05:04:32,667 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 8 [2021-01-07 05:04:32,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:32,668 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2021-01-07 05:04:32,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:04:32,668 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2021-01-07 05:04:32,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:04:32,669 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:32,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:32,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:04:32,670 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:32,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:32,670 INFO L82 PathProgramCache]: Analyzing trace with hash 178647217, now seen corresponding path program 1 times [2021-01-07 05:04:32,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:32,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263510723] [2021-01-07 05:04:32,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:32,793 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 05:04:32,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263510723] [2021-01-07 05:04:32,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:32,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:04:32,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182496192] [2021-01-07 05:04:32,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:04:32,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:32,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:04:32,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:04:32,800 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 3 states. [2021-01-07 05:04:32,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:32,873 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2021-01-07 05:04:32,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:04:32,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2021-01-07 05:04:32,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:32,879 INFO L225 Difference]: With dead ends: 46 [2021-01-07 05:04:32,879 INFO L226 Difference]: Without dead ends: 46 [2021-01-07 05:04:32,880 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 05:04:32,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-01-07 05:04:32,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-01-07 05:04:32,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-07 05:04:32,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2021-01-07 05:04:32,901 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 8 [2021-01-07 05:04:32,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:32,904 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2021-01-07 05:04:32,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:04:32,905 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2021-01-07 05:04:32,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:04:32,905 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:32,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:32,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-07 05:04:32,907 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:32,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:32,910 INFO L82 PathProgramCache]: Analyzing trace with hash 178647218, now seen corresponding path program 1 times [2021-01-07 05:04:32,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:32,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830277682] [2021-01-07 05:04:32,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:33,034 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 05:04:33,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830277682] [2021-01-07 05:04:33,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:33,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:04:33,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548772204] [2021-01-07 05:04:33,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:04:33,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:33,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:04:33,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:04:33,038 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 6 states. [2021-01-07 05:04:33,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:33,172 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2021-01-07 05:04:33,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:04:33,173 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-01-07 05:04:33,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:33,174 INFO L225 Difference]: With dead ends: 50 [2021-01-07 05:04:33,174 INFO L226 Difference]: Without dead ends: 50 [2021-01-07 05:04:33,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:04:33,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-07 05:04:33,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2021-01-07 05:04:33,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-01-07 05:04:33,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2021-01-07 05:04:33,180 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 8 [2021-01-07 05:04:33,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:33,181 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2021-01-07 05:04:33,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:04:33,181 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2021-01-07 05:04:33,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-07 05:04:33,182 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:33,182 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:33,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-07 05:04:33,182 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:33,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:33,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1877967093, now seen corresponding path program 1 times [2021-01-07 05:04:33,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:33,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853781158] [2021-01-07 05:04:33,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:33,314 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 05:04:33,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853781158] [2021-01-07 05:04:33,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366687444] [2021-01-07 05:04:33,315 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 05:04:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:33,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-07 05:04:33,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:33,489 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_20|], 1=[|v_#valid_28|]} [2021-01-07 05:04:33,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:04:33,511 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 05:04:33,513 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:33,531 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:33,543 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 05:04:33,553 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:33,564 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:33,567 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 05:04:33,568 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2021-01-07 05:04:33,623 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 05:04:33,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:33,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-01-07 05:04:33,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012466634] [2021-01-07 05:04:33,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:04:33,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:33,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:04:33,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:04:33,626 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 6 states. [2021-01-07 05:04:33,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:33,755 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2021-01-07 05:04:33,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:04:33,756 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-01-07 05:04:33,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:33,757 INFO L225 Difference]: With dead ends: 49 [2021-01-07 05:04:33,757 INFO L226 Difference]: Without dead ends: 49 [2021-01-07 05:04:33,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 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 05:04:33,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-01-07 05:04:33,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2021-01-07 05:04:33,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-07 05:04:33,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2021-01-07 05:04:33,763 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 12 [2021-01-07 05:04:33,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:33,763 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2021-01-07 05:04:33,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:04:33,764 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2021-01-07 05:04:33,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-07 05:04:33,764 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:33,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:33,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:33,981 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:33,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:33,983 INFO L82 PathProgramCache]: Analyzing trace with hash 840060780, now seen corresponding path program 1 times [2021-01-07 05:04:33,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:33,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804166898] [2021-01-07 05:04:33,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:34,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:34,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804166898] [2021-01-07 05:04:34,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407809214] [2021-01-07 05:04:34,115 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 05:04:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:34,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-07 05:04:34,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:34,324 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 05:04:34,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:04:34,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-01-07 05:04:34,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473859775] [2021-01-07 05:04:34,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:04:34,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:34,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:04:34,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:04:34,338 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 8 states. [2021-01-07 05:04:34,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:34,483 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2021-01-07 05:04:34,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:04:34,483 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2021-01-07 05:04:34,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:34,484 INFO L225 Difference]: With dead ends: 45 [2021-01-07 05:04:34,484 INFO L226 Difference]: Without dead ends: 45 [2021-01-07 05:04:34,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:04:34,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-01-07 05:04:34,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-01-07 05:04:34,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-07 05:04:34,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2021-01-07 05:04:34,489 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 14 [2021-01-07 05:04:34,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:34,489 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2021-01-07 05:04:34,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:04:34,490 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2021-01-07 05:04:34,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-07 05:04:34,490 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:34,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:34,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:34,708 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:34,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:34,710 INFO L82 PathProgramCache]: Analyzing trace with hash 840060832, now seen corresponding path program 1 times [2021-01-07 05:04:34,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:34,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980750687] [2021-01-07 05:04:34,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:34,759 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 05:04:34,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980750687] [2021-01-07 05:04:34,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:34,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:04:34,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057186548] [2021-01-07 05:04:34,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:04:34,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:34,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:04:34,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:04:34,763 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 4 states. [2021-01-07 05:04:34,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:34,799 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2021-01-07 05:04:34,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:04:34,799 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-01-07 05:04:34,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:34,800 INFO L225 Difference]: With dead ends: 81 [2021-01-07 05:04:34,801 INFO L226 Difference]: Without dead ends: 81 [2021-01-07 05:04:34,801 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 05:04:34,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-01-07 05:04:34,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 54. [2021-01-07 05:04:34,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-07 05:04:34,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2021-01-07 05:04:34,812 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 14 [2021-01-07 05:04:34,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:34,813 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2021-01-07 05:04:34,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:04:34,819 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2021-01-07 05:04:34,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-07 05:04:34,820 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:34,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:34,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-07 05:04:34,820 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:34,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:34,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1541125410, now seen corresponding path program 1 times [2021-01-07 05:04:34,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:34,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850158103] [2021-01-07 05:04:34,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:34,889 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 05:04:34,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850158103] [2021-01-07 05:04:34,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:34,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:04:34,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471059276] [2021-01-07 05:04:34,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:04:34,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:34,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:04:34,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:04:34,896 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 3 states. [2021-01-07 05:04:34,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:34,935 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2021-01-07 05:04:34,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:04:34,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2021-01-07 05:04:34,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:34,937 INFO L225 Difference]: With dead ends: 52 [2021-01-07 05:04:34,937 INFO L226 Difference]: Without dead ends: 52 [2021-01-07 05:04:34,938 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 05:04:34,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-07 05:04:34,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-01-07 05:04:34,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-01-07 05:04:34,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2021-01-07 05:04:34,942 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 14 [2021-01-07 05:04:34,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:34,943 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2021-01-07 05:04:34,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:04:34,943 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2021-01-07 05:04:34,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-07 05:04:34,944 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:34,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:34,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-07 05:04:34,944 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:34,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:34,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1541125411, now seen corresponding path program 1 times [2021-01-07 05:04:34,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:34,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423163797] [2021-01-07 05:04:34,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:35,023 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 05:04:35,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423163797] [2021-01-07 05:04:35,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:35,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:04:35,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145322001] [2021-01-07 05:04:35,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:04:35,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:35,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:04:35,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:04:35,026 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 6 states. [2021-01-07 05:04:35,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:35,131 INFO L93 Difference]: Finished difference Result 80 states and 93 transitions. [2021-01-07 05:04:35,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:04:35,132 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-01-07 05:04:35,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:35,133 INFO L225 Difference]: With dead ends: 80 [2021-01-07 05:04:35,133 INFO L226 Difference]: Without dead ends: 80 [2021-01-07 05:04:35,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:04:35,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-01-07 05:04:35,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 53. [2021-01-07 05:04:35,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-07 05:04:35,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2021-01-07 05:04:35,139 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 14 [2021-01-07 05:04:35,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:35,139 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2021-01-07 05:04:35,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:04:35,139 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2021-01-07 05:04:35,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-07 05:04:35,140 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:35,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:35,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-07 05:04:35,141 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:35,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:35,142 INFO L82 PathProgramCache]: Analyzing trace with hash 944154227, now seen corresponding path program 1 times [2021-01-07 05:04:35,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:35,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83230860] [2021-01-07 05:04:35,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:35,197 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 05:04:35,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83230860] [2021-01-07 05:04:35,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:35,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:04:35,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414223171] [2021-01-07 05:04:35,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:04:35,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:35,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:04:35,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:04:35,200 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 5 states. [2021-01-07 05:04:35,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:35,307 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2021-01-07 05:04:35,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:04:35,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2021-01-07 05:04:35,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:35,308 INFO L225 Difference]: With dead ends: 52 [2021-01-07 05:04:35,309 INFO L226 Difference]: Without dead ends: 52 [2021-01-07 05:04:35,309 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 05:04:35,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-07 05:04:35,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2021-01-07 05:04:35,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-01-07 05:04:35,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2021-01-07 05:04:35,313 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 18 [2021-01-07 05:04:35,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:35,314 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2021-01-07 05:04:35,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:04:35,314 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2021-01-07 05:04:35,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-07 05:04:35,315 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:35,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:35,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-07 05:04:35,315 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:35,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:35,316 INFO L82 PathProgramCache]: Analyzing trace with hash 944154228, now seen corresponding path program 1 times [2021-01-07 05:04:35,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:35,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755494491] [2021-01-07 05:04:35,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:35,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:35,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755494491] [2021-01-07 05:04:35,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219806410] [2021-01-07 05:04:35,412 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 05:04:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:35,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-07 05:04:35,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:35,560 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_21|], 1=[|v_#valid_29|]} [2021-01-07 05:04:35,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:04:35,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:04:35,567 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 05:04:35,569 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:35,582 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:35,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:04:35,588 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 5 treesize of output 3 [2021-01-07 05:04:35,590 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:35,601 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:35,605 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:04:35,605 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:29, output treesize:18 [2021-01-07 05:04:35,751 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 05:04:35,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:04:35,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2021-01-07 05:04:35,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448752419] [2021-01-07 05:04:35,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:04:35,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:35,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:04:35,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:04:35,754 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2021-01-07 05:04:35,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:35,943 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2021-01-07 05:04:35,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:04:35,944 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2021-01-07 05:04:35,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:35,945 INFO L225 Difference]: With dead ends: 63 [2021-01-07 05:04:35,945 INFO L226 Difference]: Without dead ends: 63 [2021-01-07 05:04:35,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-01-07 05:04:35,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-01-07 05:04:35,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2021-01-07 05:04:35,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-01-07 05:04:35,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2021-01-07 05:04:35,950 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 18 [2021-01-07 05:04:35,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:35,951 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2021-01-07 05:04:35,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:04:35,951 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2021-01-07 05:04:35,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-07 05:04:35,952 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:35,952 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:36,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-07 05:04:36,166 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:36,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:36,168 INFO L82 PathProgramCache]: Analyzing trace with hash -287041178, now seen corresponding path program 1 times [2021-01-07 05:04:36,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:36,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786625666] [2021-01-07 05:04:36,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:36,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:04:36,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786625666] [2021-01-07 05:04:36,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916007332] [2021-01-07 05:04:36,233 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 05:04:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:36,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-07 05:04:36,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:36,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:04:36,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:36,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-01-07 05:04:36,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113865711] [2021-01-07 05:04:36,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-07 05:04:36,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:36,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-07 05:04:36,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:04:36,378 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand 10 states. [2021-01-07 05:04:36,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:36,585 INFO L93 Difference]: Finished difference Result 133 states and 163 transitions. [2021-01-07 05:04:36,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-07 05:04:36,586 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2021-01-07 05:04:36,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:36,587 INFO L225 Difference]: With dead ends: 133 [2021-01-07 05:04:36,587 INFO L226 Difference]: Without dead ends: 133 [2021-01-07 05:04:36,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-01-07 05:04:36,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-01-07 05:04:36,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 61. [2021-01-07 05:04:36,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-01-07 05:04:36,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2021-01-07 05:04:36,593 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 18 [2021-01-07 05:04:36,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:36,593 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2021-01-07 05:04:36,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-07 05:04:36,594 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2021-01-07 05:04:36,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-07 05:04:36,594 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:36,595 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 05:04:36,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:36,809 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:36,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:36,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1095465713, now seen corresponding path program 1 times [2021-01-07 05:04:36,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:36,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828799425] [2021-01-07 05:04:36,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:36,887 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 05:04:36,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828799425] [2021-01-07 05:04:36,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:36,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:04:36,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088000699] [2021-01-07 05:04:36,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:04:36,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:36,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:04:36,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:04:36,891 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand 4 states. [2021-01-07 05:04:36,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:36,927 INFO L93 Difference]: Finished difference Result 130 states and 156 transitions. [2021-01-07 05:04:36,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:04:36,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2021-01-07 05:04:36,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:36,928 INFO L225 Difference]: With dead ends: 130 [2021-01-07 05:04:36,929 INFO L226 Difference]: Without dead ends: 130 [2021-01-07 05:04:36,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:04:36,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-01-07 05:04:36,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 90. [2021-01-07 05:04:36,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-01-07 05:04:36,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 111 transitions. [2021-01-07 05:04:36,934 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 111 transitions. Word has length 20 [2021-01-07 05:04:36,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:36,935 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 111 transitions. [2021-01-07 05:04:36,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:04:36,935 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 111 transitions. [2021-01-07 05:04:36,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-07 05:04:36,936 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:36,936 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 05:04:36,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-07 05:04:36,936 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:36,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:36,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1094114349, now seen corresponding path program 1 times [2021-01-07 05:04:36,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:36,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060649736] [2021-01-07 05:04:36,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:37,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:04:37,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060649736] [2021-01-07 05:04:37,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390427994] [2021-01-07 05:04:37,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:37,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-07 05:04:37,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:37,205 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_22|], 1=[|v_#valid_30|]} [2021-01-07 05:04:37,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:04:37,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:04:37,215 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 05:04:37,217 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:37,232 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:37,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:04:37,240 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 5 treesize of output 3 [2021-01-07 05:04:37,241 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:37,252 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:37,255 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:04:37,255 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:29, output treesize:18 [2021-01-07 05:04:37,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:04:37,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:37,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-01-07 05:04:37,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833542629] [2021-01-07 05:04:37,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-07 05:04:37,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:37,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-07 05:04:37,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-01-07 05:04:37,488 INFO L87 Difference]: Start difference. First operand 90 states and 111 transitions. Second operand 15 states. [2021-01-07 05:04:37,949 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2021-01-07 05:04:38,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:38,071 INFO L93 Difference]: Finished difference Result 111 states and 131 transitions. [2021-01-07 05:04:38,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:04:38,072 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 20 [2021-01-07 05:04:38,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:38,073 INFO L225 Difference]: With dead ends: 111 [2021-01-07 05:04:38,073 INFO L226 Difference]: Without dead ends: 111 [2021-01-07 05:04:38,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-01-07 05:04:38,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-01-07 05:04:38,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 98. [2021-01-07 05:04:38,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2021-01-07 05:04:38,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 124 transitions. [2021-01-07 05:04:38,079 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 124 transitions. Word has length 20 [2021-01-07 05:04:38,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:38,079 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 124 transitions. [2021-01-07 05:04:38,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-07 05:04:38,080 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 124 transitions. [2021-01-07 05:04:38,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-07 05:04:38,082 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:38,083 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 05:04:38,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-07 05:04:38,291 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:38,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:38,292 INFO L82 PathProgramCache]: Analyzing trace with hash 74397359, now seen corresponding path program 1 times [2021-01-07 05:04:38,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:38,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928571969] [2021-01-07 05:04:38,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:38,359 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 05:04:38,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928571969] [2021-01-07 05:04:38,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:38,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:04:38,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855124037] [2021-01-07 05:04:38,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:04:38,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:38,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:04:38,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:04:38,362 INFO L87 Difference]: Start difference. First operand 98 states and 124 transitions. Second operand 5 states. [2021-01-07 05:04:38,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:38,395 INFO L93 Difference]: Finished difference Result 117 states and 145 transitions. [2021-01-07 05:04:38,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:04:38,396 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2021-01-07 05:04:38,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:38,397 INFO L225 Difference]: With dead ends: 117 [2021-01-07 05:04:38,397 INFO L226 Difference]: Without dead ends: 117 [2021-01-07 05:04:38,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 05:04:38,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-01-07 05:04:38,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 69. [2021-01-07 05:04:38,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-01-07 05:04:38,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 88 transitions. [2021-01-07 05:04:38,401 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 88 transitions. Word has length 20 [2021-01-07 05:04:38,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:38,402 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 88 transitions. [2021-01-07 05:04:38,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:04:38,402 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 88 transitions. [2021-01-07 05:04:38,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-07 05:04:38,403 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:38,403 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] [2021-01-07 05:04:38,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-07 05:04:38,404 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:38,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:38,404 INFO L82 PathProgramCache]: Analyzing trace with hash -442195040, now seen corresponding path program 1 times [2021-01-07 05:04:38,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:38,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708364390] [2021-01-07 05:04:38,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:38,448 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 05:04:38,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708364390] [2021-01-07 05:04:38,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:38,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:04:38,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677347841] [2021-01-07 05:04:38,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:04:38,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:38,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:04:38,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:04:38,451 INFO L87 Difference]: Start difference. First operand 69 states and 88 transitions. Second operand 6 states. [2021-01-07 05:04:38,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:38,537 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2021-01-07 05:04:38,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:04:38,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2021-01-07 05:04:38,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:38,538 INFO L225 Difference]: With dead ends: 68 [2021-01-07 05:04:38,539 INFO L226 Difference]: Without dead ends: 68 [2021-01-07 05:04:38,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:04:38,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-01-07 05:04:38,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-01-07 05:04:38,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-01-07 05:04:38,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 85 transitions. [2021-01-07 05:04:38,542 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 85 transitions. Word has length 21 [2021-01-07 05:04:38,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:38,543 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 85 transitions. [2021-01-07 05:04:38,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:04:38,543 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 85 transitions. [2021-01-07 05:04:38,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-07 05:04:38,544 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:38,544 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] [2021-01-07 05:04:38,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-07 05:04:38,545 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:38,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:38,545 INFO L82 PathProgramCache]: Analyzing trace with hash -442195039, now seen corresponding path program 1 times [2021-01-07 05:04:38,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:38,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320740963] [2021-01-07 05:04:38,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:38,635 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 05:04:38,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320740963] [2021-01-07 05:04:38,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:38,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-07 05:04:38,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024148930] [2021-01-07 05:04:38,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:04:38,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:38,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:04:38,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:04:38,638 INFO L87 Difference]: Start difference. First operand 68 states and 85 transitions. Second operand 8 states. [2021-01-07 05:04:38,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:38,798 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2021-01-07 05:04:38,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:04:38,798 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2021-01-07 05:04:38,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:38,801 INFO L225 Difference]: With dead ends: 77 [2021-01-07 05:04:38,801 INFO L226 Difference]: Without dead ends: 77 [2021-01-07 05:04:38,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:04:38,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-01-07 05:04:38,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 72. [2021-01-07 05:04:38,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-01-07 05:04:38,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2021-01-07 05:04:38,808 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 21 [2021-01-07 05:04:38,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:38,809 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2021-01-07 05:04:38,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:04:38,809 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2021-01-07 05:04:38,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-07 05:04:38,817 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:38,818 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:38,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-07 05:04:38,819 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:38,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:38,819 INFO L82 PathProgramCache]: Analyzing trace with hash -823097434, now seen corresponding path program 2 times [2021-01-07 05:04:38,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:38,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042678814] [2021-01-07 05:04:38,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:39,094 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:04:39,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042678814] [2021-01-07 05:04:39,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462215486] [2021-01-07 05:04:39,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:39,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:04:39,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:04:39,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-07 05:04:39,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:39,263 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 05:04:39,264 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:39,277 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:39,278 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:39,278 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2021-01-07 05:04:39,505 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 17 treesize of output 13 [2021-01-07 05:04:39,506 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:39,521 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:39,541 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 05:04:39,542 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:35 [2021-01-07 05:04:39,657 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 05:04:39,660 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:39,677 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:39,706 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-01-07 05:04:39,708 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:49, output treesize:45 [2021-01-07 05:04:40,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:04:40,083 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 10 [2021-01-07 05:04:40,085 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:40,105 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:40,110 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 05:04:40,111 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:58, output treesize:3 [2021-01-07 05:04:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:04:40,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:40,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 19 [2021-01-07 05:04:40,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838498243] [2021-01-07 05:04:40,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-07 05:04:40,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:40,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-07 05:04:40,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-01-07 05:04:40,121 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand 19 states. [2021-01-07 05:04:42,890 WARN L197 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2021-01-07 05:04:45,087 WARN L197 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2021-01-07 05:04:47,328 WARN L197 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2021-01-07 05:04:48,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:48,045 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2021-01-07 05:04:48,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-07 05:04:48,046 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2021-01-07 05:04:48,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:48,047 INFO L225 Difference]: With dead ends: 115 [2021-01-07 05:04:48,047 INFO L226 Difference]: Without dead ends: 115 [2021-01-07 05:04:48,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2021-01-07 05:04:48,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-01-07 05:04:48,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 84. [2021-01-07 05:04:48,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-01-07 05:04:48,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 101 transitions. [2021-01-07 05:04:48,051 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 101 transitions. Word has length 22 [2021-01-07 05:04:48,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:48,052 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 101 transitions. [2021-01-07 05:04:48,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-07 05:04:48,052 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 101 transitions. [2021-01-07 05:04:48,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-07 05:04:48,052 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:48,053 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:48,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-07 05:04:48,264 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:48,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:48,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1863163671, now seen corresponding path program 2 times [2021-01-07 05:04:48,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:48,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440670384] [2021-01-07 05:04:48,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:48,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:48,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440670384] [2021-01-07 05:04:48,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72976227] [2021-01-07 05:04:48,375 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 05:04:48,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:04:48,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:04:48,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-07 05:04:48,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:48,459 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:48,459 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 05:04:48,461 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:48,480 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:04:48,482 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 05:04:48,482 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:04:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:04:48,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:48,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 13 [2021-01-07 05:04:48,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480404378] [2021-01-07 05:04:48,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-07 05:04:48,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:48,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-07 05:04:48,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:04:48,580 INFO L87 Difference]: Start difference. First operand 84 states and 101 transitions. Second operand 13 states. [2021-01-07 05:04:49,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:49,370 INFO L93 Difference]: Finished difference Result 243 states and 291 transitions. [2021-01-07 05:04:49,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-07 05:04:49,371 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2021-01-07 05:04:49,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:49,372 INFO L225 Difference]: With dead ends: 243 [2021-01-07 05:04:49,373 INFO L226 Difference]: Without dead ends: 243 [2021-01-07 05:04:49,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=225, Invalid=705, Unknown=0, NotChecked=0, Total=930 [2021-01-07 05:04:49,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-01-07 05:04:49,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 90. [2021-01-07 05:04:49,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-01-07 05:04:49,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2021-01-07 05:04:49,377 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 22 [2021-01-07 05:04:49,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:49,378 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2021-01-07 05:04:49,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-07 05:04:49,378 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2021-01-07 05:04:49,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-07 05:04:49,379 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:49,379 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] [2021-01-07 05:04:49,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:49,594 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:49,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:49,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1330977111, now seen corresponding path program 3 times [2021-01-07 05:04:49,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:49,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809719126] [2021-01-07 05:04:49,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:49,765 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:49,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809719126] [2021-01-07 05:04:49,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549717387] [2021-01-07 05:04:49,766 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 05:04:49,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-07 05:04:49,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:04:49,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-07 05:04:49,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:49,854 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_24|], 1=[|v_#valid_32|]} [2021-01-07 05:04:49,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:04:49,859 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 05:04:49,860 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:49,869 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:49,878 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 05:04:49,879 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:49,888 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:49,890 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 05:04:49,890 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2021-01-07 05:04:49,985 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:49,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:49,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-01-07 05:04:49,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363241522] [2021-01-07 05:04:49,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-07 05:04:49,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:49,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-07 05:04:49,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:04:49,987 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand 13 states. [2021-01-07 05:04:50,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:50,433 INFO L93 Difference]: Finished difference Result 141 states and 163 transitions. [2021-01-07 05:04:50,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:04:50,434 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2021-01-07 05:04:50,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:50,435 INFO L225 Difference]: With dead ends: 141 [2021-01-07 05:04:50,435 INFO L226 Difference]: Without dead ends: 141 [2021-01-07 05:04:50,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-01-07 05:04:50,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-01-07 05:04:50,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 100. [2021-01-07 05:04:50,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2021-01-07 05:04:50,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 122 transitions. [2021-01-07 05:04:50,440 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 122 transitions. Word has length 26 [2021-01-07 05:04:50,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:50,440 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 122 transitions. [2021-01-07 05:04:50,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-07 05:04:50,441 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 122 transitions. [2021-01-07 05:04:50,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-07 05:04:50,441 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:50,441 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 05:04:50,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:50,655 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:50,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:50,655 INFO L82 PathProgramCache]: Analyzing trace with hash 803583084, now seen corresponding path program 1 times [2021-01-07 05:04:50,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:50,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978319609] [2021-01-07 05:04:50,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:50,756 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 05:04:50,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978319609] [2021-01-07 05:04:50,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:50,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:04:50,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496064306] [2021-01-07 05:04:50,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:04:50,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:50,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:04:50,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:04:50,758 INFO L87 Difference]: Start difference. First operand 100 states and 122 transitions. Second operand 4 states. [2021-01-07 05:04:50,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:50,790 INFO L93 Difference]: Finished difference Result 99 states and 121 transitions. [2021-01-07 05:04:50,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:04:50,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2021-01-07 05:04:50,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:50,792 INFO L225 Difference]: With dead ends: 99 [2021-01-07 05:04:50,792 INFO L226 Difference]: Without dead ends: 95 [2021-01-07 05:04:50,792 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 05:04:50,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-01-07 05:04:50,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-01-07 05:04:50,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2021-01-07 05:04:50,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 112 transitions. [2021-01-07 05:04:50,796 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 112 transitions. Word has length 27 [2021-01-07 05:04:50,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:50,796 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 112 transitions. [2021-01-07 05:04:50,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:04:50,796 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 112 transitions. [2021-01-07 05:04:50,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-07 05:04:50,797 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:50,797 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:50,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-01-07 05:04:50,797 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:50,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:50,798 INFO L82 PathProgramCache]: Analyzing trace with hash 805151438, now seen corresponding path program 1 times [2021-01-07 05:04:50,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:50,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736811068] [2021-01-07 05:04:50,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:50,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:04:50,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736811068] [2021-01-07 05:04:50,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:50,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:04:50,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640031955] [2021-01-07 05:04:50,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:04:50,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:50,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:04:50,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:04:50,902 INFO L87 Difference]: Start difference. First operand 95 states and 112 transitions. Second operand 5 states. [2021-01-07 05:04:50,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:50,961 INFO L93 Difference]: Finished difference Result 179 states and 204 transitions. [2021-01-07 05:04:50,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:04:50,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2021-01-07 05:04:50,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:50,963 INFO L225 Difference]: With dead ends: 179 [2021-01-07 05:04:50,963 INFO L226 Difference]: Without dead ends: 159 [2021-01-07 05:04:50,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:04:50,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-01-07 05:04:50,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 153. [2021-01-07 05:04:50,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2021-01-07 05:04:50,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 180 transitions. [2021-01-07 05:04:50,968 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 180 transitions. Word has length 27 [2021-01-07 05:04:50,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:50,968 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 180 transitions. [2021-01-07 05:04:50,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:04:50,968 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 180 transitions. [2021-01-07 05:04:50,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-07 05:04:50,969 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:50,969 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:50,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-01-07 05:04:50,969 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:50,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:50,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1000286896, now seen corresponding path program 1 times [2021-01-07 05:04:50,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:50,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668903] [2021-01-07 05:04:50,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:51,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:51,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668903] [2021-01-07 05:04:51,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151891360] [2021-01-07 05:04:51,085 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 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 05:04:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:51,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-07 05:04:51,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:51,219 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 11 treesize of output 7 [2021-01-07 05:04:51,220 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:51,225 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:51,226 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:51,226 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-07 05:04:51,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:04:51,380 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:51,381 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 15 treesize of output 10 [2021-01-07 05:04:51,382 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:51,389 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:51,393 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:51,393 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:24, output treesize:3 [2021-01-07 05:04:51,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:04:51,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:04:51,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2021-01-07 05:04:51,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652507650] [2021-01-07 05:04:51,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:04:51,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:51,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:04:51,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:04:51,421 INFO L87 Difference]: Start difference. First operand 153 states and 180 transitions. Second operand 9 states. [2021-01-07 05:04:51,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:51,709 INFO L93 Difference]: Finished difference Result 215 states and 245 transitions. [2021-01-07 05:04:51,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:04:51,709 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2021-01-07 05:04:51,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:51,711 INFO L225 Difference]: With dead ends: 215 [2021-01-07 05:04:51,711 INFO L226 Difference]: Without dead ends: 191 [2021-01-07 05:04:51,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:04:51,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-01-07 05:04:51,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 159. [2021-01-07 05:04:51,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2021-01-07 05:04:51,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 187 transitions. [2021-01-07 05:04:51,716 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 187 transitions. Word has length 27 [2021-01-07 05:04:51,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:51,717 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 187 transitions. [2021-01-07 05:04:51,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:04:51,717 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 187 transitions. [2021-01-07 05:04:51,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-07 05:04:51,718 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:51,718 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:51,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:51,933 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:51,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:51,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1134300402, now seen corresponding path program 1 times [2021-01-07 05:04:51,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:51,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764945632] [2021-01-07 05:04:51,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:52,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:52,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764945632] [2021-01-07 05:04:52,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577657579] [2021-01-07 05:04:52,067 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 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 05:04:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:52,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-07 05:04:52,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:52,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:04:52,169 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:52,170 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 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:04:52,171 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:52,206 INFO L625 ElimStorePlain]: treesize reduction 10, result has 72.2 percent of original size [2021-01-07 05:04:52,208 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:52,208 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:04:52,306 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 05:04:52,307 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:52,312 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:52,313 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:52,313 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2021-01-07 05:04:52,423 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-01-07 05:04:52,427 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:04:52,438 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:52,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:04:52,445 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:52,445 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 17 treesize of output 10 [2021-01-07 05:04:52,447 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:52,455 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:52,460 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:52,460 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:34, output treesize:3 [2021-01-07 05:04:52,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:52,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:52,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2021-01-07 05:04:52,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305519350] [2021-01-07 05:04:52,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-07 05:04:52,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:52,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-07 05:04:52,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-01-07 05:04:52,488 INFO L87 Difference]: Start difference. First operand 159 states and 187 transitions. Second operand 18 states. [2021-01-07 05:04:53,447 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2021-01-07 05:04:53,594 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2021-01-07 05:04:53,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:53,752 INFO L93 Difference]: Finished difference Result 203 states and 230 transitions. [2021-01-07 05:04:53,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-07 05:04:53,753 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 27 [2021-01-07 05:04:53,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:53,755 INFO L225 Difference]: With dead ends: 203 [2021-01-07 05:04:53,755 INFO L226 Difference]: Without dead ends: 191 [2021-01-07 05:04:53,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=229, Invalid=763, Unknown=0, NotChecked=0, Total=992 [2021-01-07 05:04:53,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-01-07 05:04:53,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 151. [2021-01-07 05:04:53,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2021-01-07 05:04:53,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 178 transitions. [2021-01-07 05:04:53,761 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 178 transitions. Word has length 27 [2021-01-07 05:04:53,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:53,762 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 178 transitions. [2021-01-07 05:04:53,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-07 05:04:53,762 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 178 transitions. [2021-01-07 05:04:53,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-07 05:04:53,762 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:53,762 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:53,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:53,977 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:53,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:53,978 INFO L82 PathProgramCache]: Analyzing trace with hash 831251234, now seen corresponding path program 4 times [2021-01-07 05:04:53,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:53,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306503663] [2021-01-07 05:04:53,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:54,430 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:04:54,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306503663] [2021-01-07 05:04:54,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390623581] [2021-01-07 05:04:54,430 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 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 05:04:54,516 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:04:54,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:04:54,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 41 conjunts are in the unsatisfiable core [2021-01-07 05:04:54,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:54,586 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:54,587 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 05:04:54,588 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:54,621 INFO L625 ElimStorePlain]: treesize reduction 10, result has 70.6 percent of original size [2021-01-07 05:04:54,622 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:54,622 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:24 [2021-01-07 05:04:54,874 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-07 05:04:54,887 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-07 05:04:54,888 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:54,895 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 05:04:54,895 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:54,924 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:54,926 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 2 xjuncts. [2021-01-07 05:04:54,926 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:68, output treesize:60 [2021-01-07 05:04:55,009 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2021-01-07 05:04:55,009 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:04:55,038 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:55,039 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 61 [2021-01-07 05:04:55,041 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:55,113 INFO L625 ElimStorePlain]: treesize reduction 33, result has 70.5 percent of original size [2021-01-07 05:04:55,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:04:55,122 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 29 treesize of output 28 [2021-01-07 05:04:55,124 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:55,150 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:55,153 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 2 xjuncts. [2021-01-07 05:04:55,153 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:83, output treesize:75 [2021-01-07 05:04:57,245 WARN L197 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 44 [2021-01-07 05:04:59,363 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 44 [2021-01-07 05:05:01,469 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 44 [2021-01-07 05:05:03,594 WARN L197 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 45 [2021-01-07 05:05:05,709 WARN L197 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 45 [2021-01-07 05:05:05,715 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:05:05,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:05:05,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:05:05,735 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:05,736 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 26 [2021-01-07 05:05:05,737 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:05,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:05:05,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:05:05,745 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 10 [2021-01-07 05:05:05,747 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:05,770 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:05,772 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2021-01-07 05:05:05,772 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:95, output treesize:35 [2021-01-07 05:05:05,860 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:05,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:05,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 27 [2021-01-07 05:05:05,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953893259] [2021-01-07 05:05:05,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-01-07 05:05:05,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:05,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-01-07 05:05:05,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2021-01-07 05:05:05,862 INFO L87 Difference]: Start difference. First operand 151 states and 178 transitions. Second operand 27 states. [2021-01-07 05:05:07,200 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2021-01-07 05:05:10,612 WARN L197 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 94 DAG size of output: 65 [2021-01-07 05:05:19,147 WARN L197 SmtUtils]: Spent 8.37 s on a formula simplification. DAG size of input: 120 DAG size of output: 82 [2021-01-07 05:05:21,889 WARN L197 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 102 DAG size of output: 63 [2021-01-07 05:05:26,938 WARN L197 SmtUtils]: Spent 4.92 s on a formula simplification. DAG size of input: 108 DAG size of output: 65 [2021-01-07 05:05:27,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:27,286 INFO L93 Difference]: Finished difference Result 219 states and 240 transitions. [2021-01-07 05:05:27,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-07 05:05:27,287 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 28 [2021-01-07 05:05:27,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:27,288 INFO L225 Difference]: With dead ends: 219 [2021-01-07 05:05:27,289 INFO L226 Difference]: Without dead ends: 195 [2021-01-07 05:05:27,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=398, Invalid=1858, Unknown=0, NotChecked=0, Total=2256 [2021-01-07 05:05:27,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-01-07 05:05:27,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 150. [2021-01-07 05:05:27,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2021-01-07 05:05:27,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 175 transitions. [2021-01-07 05:05:27,295 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 175 transitions. Word has length 28 [2021-01-07 05:05:27,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:27,296 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 175 transitions. [2021-01-07 05:05:27,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-01-07 05:05:27,296 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 175 transitions. [2021-01-07 05:05:27,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-07 05:05:27,296 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:27,296 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:27,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-01-07 05:05:27,497 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:05:27,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:27,498 INFO L82 PathProgramCache]: Analyzing trace with hash 697237728, now seen corresponding path program 1 times [2021-01-07 05:05:27,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:27,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396039346] [2021-01-07 05:05:27,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:27,914 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:27,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396039346] [2021-01-07 05:05:27,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927322878] [2021-01-07 05:05:27,915 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 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 05:05:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:27,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-07 05:05:27,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:28,054 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 05:05:28,056 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:28,066 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:28,067 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:28,068 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2021-01-07 05:05:28,266 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 17 treesize of output 13 [2021-01-07 05:05:28,267 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:28,281 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:28,284 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 05:05:28,284 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:32 [2021-01-07 05:05:28,361 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 05:05:28,366 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:28,384 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:28,390 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-01-07 05:05:28,390 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:46, output treesize:42 [2021-01-07 05:05:28,908 INFO L348 Elim1Store]: treesize reduction 10, result has 75.6 percent of original size [2021-01-07 05:05:28,909 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 3 case distinctions, treesize of input 41 treesize of output 44 [2021-01-07 05:05:28,911 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:05:28,913 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:28,943 INFO L625 ElimStorePlain]: treesize reduction 7, result has 80.0 percent of original size [2021-01-07 05:05:28,947 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 05:05:28,947 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:59, output treesize:3 [2021-01-07 05:05:28,988 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:28,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:28,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2021-01-07 05:05:28,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116244287] [2021-01-07 05:05:28,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-07 05:05:28,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:28,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-07 05:05:28,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2021-01-07 05:05:28,990 INFO L87 Difference]: Start difference. First operand 150 states and 175 transitions. Second operand 26 states. [2021-01-07 05:05:29,884 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2021-01-07 05:05:31,724 WARN L197 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2021-01-07 05:05:34,366 WARN L197 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-01-07 05:05:35,067 WARN L197 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2021-01-07 05:05:41,361 WARN L197 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 89 DAG size of output: 58 [2021-01-07 05:05:43,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:43,202 INFO L93 Difference]: Finished difference Result 215 states and 244 transitions. [2021-01-07 05:05:43,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-07 05:05:43,203 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 28 [2021-01-07 05:05:43,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:43,204 INFO L225 Difference]: With dead ends: 215 [2021-01-07 05:05:43,204 INFO L226 Difference]: Without dead ends: 205 [2021-01-07 05:05:43,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=262, Invalid=1070, Unknown=0, NotChecked=0, Total=1332 [2021-01-07 05:05:43,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-01-07 05:05:43,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 157. [2021-01-07 05:05:43,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2021-01-07 05:05:43,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 183 transitions. [2021-01-07 05:05:43,210 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 183 transitions. Word has length 28 [2021-01-07 05:05:43,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:43,210 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 183 transitions. [2021-01-07 05:05:43,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-01-07 05:05:43,211 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 183 transitions. [2021-01-07 05:05:43,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-07 05:05:43,211 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:43,211 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-01-07 05:05:43,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-07 05:05:43,412 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:05:43,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:43,413 INFO L82 PathProgramCache]: Analyzing trace with hash -934715925, now seen corresponding path program 2 times [2021-01-07 05:05:43,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:43,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128606842] [2021-01-07 05:05:43,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:43,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:05:43,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128606842] [2021-01-07 05:05:43,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:05:43,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-01-07 05:05:43,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753618882] [2021-01-07 05:05:43,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:05:43,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:43,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:05:43,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:05:43,624 INFO L87 Difference]: Start difference. First operand 157 states and 183 transitions. Second operand 11 states. [2021-01-07 05:05:43,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:43,948 INFO L93 Difference]: Finished difference Result 225 states and 257 transitions. [2021-01-07 05:05:43,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:05:43,949 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2021-01-07 05:05:43,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:43,951 INFO L225 Difference]: With dead ends: 225 [2021-01-07 05:05:43,951 INFO L226 Difference]: Without dead ends: 201 [2021-01-07 05:05:43,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:05:43,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-01-07 05:05:43,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 159. [2021-01-07 05:05:43,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2021-01-07 05:05:43,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 186 transitions. [2021-01-07 05:05:43,964 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 186 transitions. Word has length 31 [2021-01-07 05:05:43,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:43,964 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 186 transitions. [2021-01-07 05:05:43,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-07 05:05:43,965 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 186 transitions. [2021-01-07 05:05:43,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-07 05:05:43,965 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:43,965 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:43,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-01-07 05:05:43,966 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:05:43,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:43,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1853207525, now seen corresponding path program 5 times [2021-01-07 05:05:43,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:43,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959254657] [2021-01-07 05:05:43,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:05:44,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959254657] [2021-01-07 05:05:44,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725015623] [2021-01-07 05:05:44,150 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 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 05:05:44,222 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-01-07 05:05:44,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:44,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 40 conjunts are in the unsatisfiable core [2021-01-07 05:05:44,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:44,268 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:44,268 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 05:05:44,269 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:44,301 INFO L625 ElimStorePlain]: treesize reduction 10, result has 70.6 percent of original size [2021-01-07 05:05:44,303 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:05:44,304 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:05:44,305 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:21 [2021-01-07 05:05:44,306 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:05:44,345 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:05:44,378 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:05:44,412 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:05:44,446 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:05:44,525 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:05:44,581 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:05:45,048 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:05:45,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:45,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2021-01-07 05:05:45,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234289562] [2021-01-07 05:05:45,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-07 05:05:45,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:45,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-07 05:05:45,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:05:45,050 INFO L87 Difference]: Start difference. First operand 159 states and 186 transitions. Second operand 23 states. [2021-01-07 05:05:47,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:47,111 INFO L93 Difference]: Finished difference Result 242 states and 275 transitions. [2021-01-07 05:05:47,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-07 05:05:47,112 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 32 [2021-01-07 05:05:47,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:47,114 INFO L225 Difference]: With dead ends: 242 [2021-01-07 05:05:47,114 INFO L226 Difference]: Without dead ends: 226 [2021-01-07 05:05:47,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=246, Invalid=1160, Unknown=0, NotChecked=0, Total=1406 [2021-01-07 05:05:47,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-01-07 05:05:47,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 173. [2021-01-07 05:05:47,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2021-01-07 05:05:47,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 202 transitions. [2021-01-07 05:05:47,120 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 202 transitions. Word has length 32 [2021-01-07 05:05:47,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:47,121 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 202 transitions. [2021-01-07 05:05:47,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-07 05:05:47,121 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 202 transitions. [2021-01-07 05:05:47,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-07 05:05:47,121 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:47,122 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:47,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-01-07 05:05:47,334 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:05:47,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:47,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1478995618, now seen corresponding path program 6 times [2021-01-07 05:05:47,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:47,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708738400] [2021-01-07 05:05:47,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:47,770 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:47,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708738400] [2021-01-07 05:05:47,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469029390] [2021-01-07 05:05:47,771 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 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 05:05:47,855 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-07 05:05:47,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:47,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 51 conjunts are in the unsatisfiable core [2021-01-07 05:05:47,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:48,187 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 05:05:48,189 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:48,202 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:48,204 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 05:05:48,204 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:26 [2021-01-07 05:05:48,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:05:48,277 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 22 treesize of output 21 [2021-01-07 05:05:48,278 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:48,291 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:48,292 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 05:05:48,293 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:27 [2021-01-07 05:05:48,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:05:48,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:05:48,721 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:48,722 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 6 case distinctions, treesize of input 32 treesize of output 25 [2021-01-07 05:05:48,723 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:05:48,725 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:48,733 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:48,736 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:48,736 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:38, output treesize:3 [2021-01-07 05:05:48,747 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:48,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:48,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 30 [2021-01-07 05:05:48,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204755960] [2021-01-07 05:05:48,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-01-07 05:05:48,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:48,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-01-07 05:05:48,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2021-01-07 05:05:48,749 INFO L87 Difference]: Start difference. First operand 173 states and 202 transitions. Second operand 30 states. [2021-01-07 05:05:50,732 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2021-01-07 05:05:51,040 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2021-01-07 05:05:51,264 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2021-01-07 05:05:51,611 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2021-01-07 05:05:51,921 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2021-01-07 05:05:52,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:52,106 INFO L93 Difference]: Finished difference Result 307 states and 338 transitions. [2021-01-07 05:05:52,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-07 05:05:52,107 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 34 [2021-01-07 05:05:52,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:52,108 INFO L225 Difference]: With dead ends: 307 [2021-01-07 05:05:52,108 INFO L226 Difference]: Without dead ends: 269 [2021-01-07 05:05:52,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=488, Invalid=2704, Unknown=0, NotChecked=0, Total=3192 [2021-01-07 05:05:52,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-01-07 05:05:52,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 182. [2021-01-07 05:05:52,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2021-01-07 05:05:52,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 211 transitions. [2021-01-07 05:05:52,115 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 211 transitions. Word has length 34 [2021-01-07 05:05:52,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:52,115 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 211 transitions. [2021-01-07 05:05:52,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-01-07 05:05:52,115 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 211 transitions. [2021-01-07 05:05:52,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-07 05:05:52,116 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:52,116 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:52,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:52,332 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:05:52,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:52,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1456363364, now seen corresponding path program 2 times [2021-01-07 05:05:52,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:52,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814890921] [2021-01-07 05:05:52,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:53,122 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:53,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814890921] [2021-01-07 05:05:53,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299676369] [2021-01-07 05:05:53,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:53,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:05:53,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:53,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 46 conjunts are in the unsatisfiable core [2021-01-07 05:05:53,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:53,219 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 05:05:53,222 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:53,236 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:53,237 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:53,237 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2021-01-07 05:05:53,550 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 17 treesize of output 13 [2021-01-07 05:05:53,551 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:53,566 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:53,569 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 05:05:53,570 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:35 [2021-01-07 05:05:53,652 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 05:05:53,656 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:53,675 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:53,679 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-01-07 05:05:53,680 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:49, output treesize:45 [2021-01-07 05:05:54,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:05:54,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:05:54,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:05:54,462 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:54,463 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 64 [2021-01-07 05:05:54,466 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:05:54,468 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:05:54,469 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:54,536 INFO L625 ElimStorePlain]: treesize reduction 10, result has 83.3 percent of original size [2021-01-07 05:05:54,542 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 05:05:54,543 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:80, output treesize:3 [2021-01-07 05:05:54,552 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:54,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:54,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 30 [2021-01-07 05:05:54,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020133795] [2021-01-07 05:05:54,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-01-07 05:05:54,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:54,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-01-07 05:05:54,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=782, Unknown=0, NotChecked=0, Total=870 [2021-01-07 05:05:54,554 INFO L87 Difference]: Start difference. First operand 182 states and 211 transitions. Second operand 30 states. [2021-01-07 05:05:59,177 WARN L197 SmtUtils]: Spent 3.15 s on a formula simplification. DAG size of input: 71 DAG size of output: 45 [2021-01-07 05:05:59,815 WARN L197 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2021-01-07 05:06:00,285 WARN L197 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 55 [2021-01-07 05:06:06,586 WARN L197 SmtUtils]: Spent 6.20 s on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2021-01-07 05:06:10,134 WARN L197 SmtUtils]: Spent 3.43 s on a formula simplification. DAG size of input: 107 DAG size of output: 66 [2021-01-07 05:06:14,431 WARN L197 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2021-01-07 05:06:18,518 WARN L197 SmtUtils]: Spent 3.97 s on a formula simplification. DAG size of input: 103 DAG size of output: 69 [2021-01-07 05:06:26,545 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2021-01-07 05:06:34,925 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 55 [2021-01-07 05:06:36,944 WARN L197 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 71 [2021-01-07 05:06:46,501 WARN L197 SmtUtils]: Spent 3.43 s on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2021-01-07 05:06:47,235 WARN L197 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 74 [2021-01-07 05:06:59,532 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2021-01-07 05:07:11,703 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2021-01-07 05:07:14,327 WARN L197 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2021-01-07 05:07:22,454 WARN L197 SmtUtils]: Spent 5.97 s on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2021-01-07 05:07:26,981 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 48 [2021-01-07 05:07:39,440 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2021-01-07 05:07:42,159 WARN L197 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 65 [2021-01-07 05:07:54,271 WARN L197 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2021-01-07 05:07:56,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:56,475 INFO L93 Difference]: Finished difference Result 303 states and 344 transitions. [2021-01-07 05:07:56,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-07 05:07:56,476 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 34 [2021-01-07 05:07:56,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:56,478 INFO L225 Difference]: With dead ends: 303 [2021-01-07 05:07:56,479 INFO L226 Difference]: Without dead ends: 291 [2021-01-07 05:07:56,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 77.6s TimeCoverageRelationStatistics Valid=650, Invalid=2756, Unknown=16, NotChecked=0, Total=3422 [2021-01-07 05:07:56,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-01-07 05:07:56,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 197. [2021-01-07 05:07:56,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2021-01-07 05:07:56,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 229 transitions. [2021-01-07 05:07:56,487 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 229 transitions. Word has length 34 [2021-01-07 05:07:56,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:56,487 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 229 transitions. [2021-01-07 05:07:56,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-01-07 05:07:56,488 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 229 transitions. [2021-01-07 05:07:56,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-01-07 05:07:56,488 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:56,488 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:56,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:56,690 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:56,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:56,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1739814664, now seen corresponding path program 1 times [2021-01-07 05:07:56,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:56,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893935808] [2021-01-07 05:07:56,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:56,974 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:07:56,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893935808] [2021-01-07 05:07:56,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050420354] [2021-01-07 05:07:56,975 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:57,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-07 05:07:57,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:57,109 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:57,109 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 05:07:57,111 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:57,141 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:07:57,144 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 05:07:57,144 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:07:57,475 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:07:57,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:57,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 19 [2021-01-07 05:07:57,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238306341] [2021-01-07 05:07:57,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-07 05:07:57,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:57,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-07 05:07:57,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:07:57,478 INFO L87 Difference]: Start difference. First operand 197 states and 229 transitions. Second operand 20 states. [2021-01-07 05:07:58,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:58,302 INFO L93 Difference]: Finished difference Result 240 states and 270 transitions. [2021-01-07 05:07:58,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:07:58,303 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 35 [2021-01-07 05:07:58,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:58,305 INFO L225 Difference]: With dead ends: 240 [2021-01-07 05:07:58,305 INFO L226 Difference]: Without dead ends: 240 [2021-01-07 05:07:58,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2021-01-07 05:07:58,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-01-07 05:07:58,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 217. [2021-01-07 05:07:58,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2021-01-07 05:07:58,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 251 transitions. [2021-01-07 05:07:58,313 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 251 transitions. Word has length 35 [2021-01-07 05:07:58,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:58,313 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 251 transitions. [2021-01-07 05:07:58,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-07 05:07:58,314 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 251 transitions. [2021-01-07 05:07:58,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-07 05:07:58,314 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:58,315 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:58,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:58,528 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:58,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:58,529 INFO L82 PathProgramCache]: Analyzing trace with hash 763708385, now seen corresponding path program 7 times [2021-01-07 05:07:58,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:58,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871197360] [2021-01-07 05:07:58,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:58,857 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:58,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871197360] [2021-01-07 05:07:58,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790397217] [2021-01-07 05:07:58,858 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:58,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 41 conjunts are in the unsatisfiable core [2021-01-07 05:07:58,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:59,023 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:59,025 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 05:07:59,029 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:59,077 INFO L625 ElimStorePlain]: treesize reduction 10, result has 70.6 percent of original size [2021-01-07 05:07:59,079 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:07:59,080 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:07:59,081 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:21 [2021-01-07 05:07:59,082 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:07:59,134 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:07:59,184 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:07:59,232 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:07:59,284 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:07:59,376 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:07:59,478 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:07:59,561 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:07:59,673 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:07:59,754 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:08:00,435 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:00,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:00,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 27 [2021-01-07 05:08:00,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037800757] [2021-01-07 05:08:00,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-07 05:08:00,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:00,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-07 05:08:00,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2021-01-07 05:08:00,440 INFO L87 Difference]: Start difference. First operand 217 states and 251 transitions. Second operand 28 states. [2021-01-07 05:08:02,020 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 34 [2021-01-07 05:08:02,387 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2021-01-07 05:08:02,655 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2021-01-07 05:08:02,949 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2021-01-07 05:08:03,210 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2021-01-07 05:08:04,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:04,111 INFO L93 Difference]: Finished difference Result 366 states and 411 transitions. [2021-01-07 05:08:04,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-07 05:08:04,112 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 38 [2021-01-07 05:08:04,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:04,114 INFO L225 Difference]: With dead ends: 366 [2021-01-07 05:08:04,115 INFO L226 Difference]: Without dead ends: 350 [2021-01-07 05:08:04,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=336, Invalid=1734, Unknown=0, NotChecked=0, Total=2070 [2021-01-07 05:08:04,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-01-07 05:08:04,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 237. [2021-01-07 05:08:04,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2021-01-07 05:08:04,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 273 transitions. [2021-01-07 05:08:04,129 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 273 transitions. Word has length 38 [2021-01-07 05:08:04,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:04,131 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 273 transitions. [2021-01-07 05:08:04,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-01-07 05:08:04,131 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 273 transitions. [2021-01-07 05:08:04,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-07 05:08:04,133 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:04,133 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:04,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-01-07 05:08:04,347 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:04,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:04,347 INFO L82 PathProgramCache]: Analyzing trace with hash -515648934, now seen corresponding path program 8 times [2021-01-07 05:08:04,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:04,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039348211] [2021-01-07 05:08:04,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:04,922 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 12 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:08:04,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039348211] [2021-01-07 05:08:04,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451335896] [2021-01-07 05:08:04,923 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:05,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:08:05,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:05,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 49 conjunts are in the unsatisfiable core [2021-01-07 05:08:05,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:05,021 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 05:08:05,023 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:05,035 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:05,036 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:05,036 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2021-01-07 05:08:05,459 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 17 treesize of output 13 [2021-01-07 05:08:05,460 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:05,482 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:05,485 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 05:08:05,486 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:33 [2021-01-07 05:08:05,584 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 05:08:05,586 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:05,610 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:05,613 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-01-07 05:08:05,614 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:47, output treesize:43 [2021-01-07 05:08:06,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:08:06,512 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 10 [2021-01-07 05:08:06,514 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:06,537 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:06,541 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 05:08:06,541 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:58, output treesize:3 [2021-01-07 05:08:06,552 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 12 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:08:06,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:06,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 32 [2021-01-07 05:08:06,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518164496] [2021-01-07 05:08:06,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-01-07 05:08:06,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:06,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-01-07 05:08:06,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=907, Unknown=0, NotChecked=0, Total=992 [2021-01-07 05:08:06,554 INFO L87 Difference]: Start difference. First operand 237 states and 273 transitions. Second operand 32 states. [2021-01-07 05:08:08,489 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 43 [2021-01-07 05:08:08,771 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2021-01-07 05:08:09,162 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2021-01-07 05:08:09,516 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 60 [2021-01-07 05:08:09,864 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2021-01-07 05:08:10,172 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 60 [2021-01-07 05:08:10,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:10,323 INFO L93 Difference]: Finished difference Result 327 states and 366 transitions. [2021-01-07 05:08:10,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-07 05:08:10,325 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 40 [2021-01-07 05:08:10,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:10,329 INFO L225 Difference]: With dead ends: 327 [2021-01-07 05:08:10,329 INFO L226 Difference]: Without dead ends: 295 [2021-01-07 05:08:10,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=279, Invalid=1883, Unknown=0, NotChecked=0, Total=2162 [2021-01-07 05:08:10,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-01-07 05:08:10,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 246. [2021-01-07 05:08:10,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2021-01-07 05:08:10,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 282 transitions. [2021-01-07 05:08:10,337 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 282 transitions. Word has length 40 [2021-01-07 05:08:10,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:10,337 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 282 transitions. [2021-01-07 05:08:10,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2021-01-07 05:08:10,337 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 282 transitions. [2021-01-07 05:08:10,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-07 05:08:10,338 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:10,338 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:10,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-01-07 05:08:10,552 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.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:10,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:10,552 INFO L82 PathProgramCache]: Analyzing trace with hash -910015720, now seen corresponding path program 3 times [2021-01-07 05:08:10,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:10,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911646073] [2021-01-07 05:08:10,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:11,018 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2021-01-07 05:08:11,274 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2021-01-07 05:08:12,053 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 14 proven. 38 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:08:12,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911646073] [2021-01-07 05:08:12,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614497033] [2021-01-07 05:08:12,053 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:12,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-01-07 05:08:12,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:12,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 60 conjunts are in the unsatisfiable core [2021-01-07 05:08:12,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:12,769 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 17 treesize of output 13 [2021-01-07 05:08:12,770 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:12,789 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:12,792 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 05:08:12,792 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:34 [2021-01-07 05:08:12,931 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:12,931 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 66 [2021-01-07 05:08:12,936 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:12,987 INFO L625 ElimStorePlain]: treesize reduction 38, result has 47.9 percent of original size [2021-01-07 05:08:12,990 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-01-07 05:08:12,990 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:39, output treesize:35 [2021-01-07 05:08:14,330 INFO L348 Elim1Store]: treesize reduction 17, result has 78.2 percent of original size [2021-01-07 05:08:14,331 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 82 [2021-01-07 05:08:14,333 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:08:14,334 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:08:14,337 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:08:14,338 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:08:14,340 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:14,398 INFO L625 ElimStorePlain]: treesize reduction 7, result has 84.1 percent of original size [2021-01-07 05:08:14,407 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:14,407 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:62, output treesize:3 [2021-01-07 05:08:14,419 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 12 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:08:14,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:14,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 39 [2021-01-07 05:08:14,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685852752] [2021-01-07 05:08:14,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-01-07 05:08:14,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:14,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-01-07 05:08:14,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1348, Unknown=0, NotChecked=0, Total=1482 [2021-01-07 05:08:14,421 INFO L87 Difference]: Start difference. First operand 246 states and 282 transitions. Second operand 39 states. [2021-01-07 05:08:15,102 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 21 [2021-01-07 05:08:15,613 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 26 [2021-01-07 05:08:15,803 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 34 [2021-01-07 05:08:16,107 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 32 [2021-01-07 05:08:16,309 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-01-07 05:08:16,657 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2021-01-07 05:08:17,191 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-01-07 05:08:17,521 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2021-01-07 05:08:18,106 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2021-01-07 05:08:18,569 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-01-07 05:08:18,999 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2021-01-07 05:08:19,553 WARN L197 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2021-01-07 05:08:20,062 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2021-01-07 05:08:20,515 WARN L197 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2021-01-07 05:08:20,702 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-01-07 05:08:21,175 WARN L197 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 87 [2021-01-07 05:08:21,702 WARN L197 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2021-01-07 05:08:21,910 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-01-07 05:08:22,403 WARN L197 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2021-01-07 05:08:23,007 WARN L197 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2021-01-07 05:08:23,200 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-01-07 05:08:23,684 WARN L197 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 87 [2021-01-07 05:08:24,198 WARN L197 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 91 [2021-01-07 05:08:24,400 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-01-07 05:08:24,886 WARN L197 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2021-01-07 05:08:25,486 WARN L197 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 93 [2021-01-07 05:08:25,680 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-01-07 05:08:26,180 WARN L197 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2021-01-07 05:08:26,702 WARN L197 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 96 [2021-01-07 05:08:26,883 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-01-07 05:08:27,422 WARN L197 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2021-01-07 05:08:28,129 WARN L197 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 98 [2021-01-07 05:08:29,015 WARN L197 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 100 [2021-01-07 05:08:29,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:29,762 INFO L93 Difference]: Finished difference Result 492 states and 543 transitions. [2021-01-07 05:08:29,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-01-07 05:08:29,764 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 40 [2021-01-07 05:08:29,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:29,766 INFO L225 Difference]: With dead ends: 492 [2021-01-07 05:08:29,766 INFO L226 Difference]: Without dead ends: 466 [2021-01-07 05:08:29,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1717 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=899, Invalid=5907, Unknown=0, NotChecked=0, Total=6806 [2021-01-07 05:08:29,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-01-07 05:08:29,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 261. [2021-01-07 05:08:29,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2021-01-07 05:08:29,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 300 transitions. [2021-01-07 05:08:29,775 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 300 transitions. Word has length 40 [2021-01-07 05:08:29,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:29,776 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 300 transitions. [2021-01-07 05:08:29,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2021-01-07 05:08:29,776 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 300 transitions. [2021-01-07 05:08:29,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-07 05:08:29,777 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:29,777 INFO L422 BasicCegarLoop]: trace histogram [3, 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 05:08:29,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-01-07 05:08:29,993 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:29,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:29,994 INFO L82 PathProgramCache]: Analyzing trace with hash 2063863029, now seen corresponding path program 2 times [2021-01-07 05:08:29,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:29,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415424902] [2021-01-07 05:08:29,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:30,233 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:08:30,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415424902] [2021-01-07 05:08:30,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715943278] [2021-01-07 05:08:30,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:30,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:08:30,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:30,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 71 conjunts are in the unsatisfiable core [2021-01-07 05:08:30,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:30,369 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:30,369 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 05:08:30,370 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:30,405 INFO L625 ElimStorePlain]: treesize reduction 10, result has 72.2 percent of original size [2021-01-07 05:08:30,411 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 5 treesize of output 3 [2021-01-07 05:08:30,412 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:30,427 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:30,430 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 05:08:30,431 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:21, output treesize:12 [2021-01-07 05:08:30,543 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-07 05:08:30,544 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:30,556 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:30,557 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:30,557 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2021-01-07 05:08:30,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:08:30,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:08:30,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:08:30,904 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:30,904 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 63 [2021-01-07 05:08:30,907 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:30,958 INFO L625 ElimStorePlain]: treesize reduction 18, result has 71.0 percent of original size [2021-01-07 05:08:30,960 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:30,960 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:47, output treesize:44 [2021-01-07 05:08:31,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:08:31,221 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:31,221 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 26 [2021-01-07 05:08:31,223 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:08:31,240 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:31,243 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:31,243 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:50, output treesize:19 [2021-01-07 05:08:31,468 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:08:31,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:31,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 28 [2021-01-07 05:08:31,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615537673] [2021-01-07 05:08:31,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-07 05:08:31,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:31,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-07 05:08:31,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-01-07 05:08:31,471 INFO L87 Difference]: Start difference. First operand 261 states and 300 transitions. Second operand 28 states. [2021-01-07 05:08:32,960 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-01-07 05:08:33,213 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-01-07 05:08:33,469 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2021-01-07 05:08:33,820 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2021-01-07 05:08:34,325 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-01-07 05:08:34,955 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-01-07 05:08:35,153 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2021-01-07 05:08:35,435 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2021-01-07 05:08:35,657 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2021-01-07 05:08:35,948 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2021-01-07 05:08:36,324 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-01-07 05:08:36,608 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2021-01-07 05:08:37,007 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-01-07 05:08:37,237 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-01-07 05:08:37,634 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-01-07 05:08:37,788 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-01-07 05:08:38,009 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2021-01-07 05:08:38,223 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-01-07 05:08:38,453 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-01-07 05:08:38,717 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2021-01-07 05:08:39,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:39,600 INFO L93 Difference]: Finished difference Result 359 states and 390 transitions. [2021-01-07 05:08:39,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-01-07 05:08:39,601 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 41 [2021-01-07 05:08:39,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:39,603 INFO L225 Difference]: With dead ends: 359 [2021-01-07 05:08:39,603 INFO L226 Difference]: Without dead ends: 333 [2021-01-07 05:08:39,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=921, Invalid=5241, Unknown=0, NotChecked=0, Total=6162 [2021-01-07 05:08:39,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-01-07 05:08:39,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 251. [2021-01-07 05:08:39,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2021-01-07 05:08:39,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 289 transitions. [2021-01-07 05:08:39,611 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 289 transitions. Word has length 41 [2021-01-07 05:08:39,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:39,612 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 289 transitions. [2021-01-07 05:08:39,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-01-07 05:08:39,612 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 289 transitions. [2021-01-07 05:08:39,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-07 05:08:39,613 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:39,613 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:39,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-01-07 05:08:39,827 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:39,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:39,828 INFO L82 PathProgramCache]: Analyzing trace with hash 734238365, now seen corresponding path program 9 times [2021-01-07 05:08:39,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:39,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421622020] [2021-01-07 05:08:39,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:40,348 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 15 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:40,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421622020] [2021-01-07 05:08:40,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648649066] [2021-01-07 05:08:40,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:40,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-01-07 05:08:40,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:40,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 59 conjunts are in the unsatisfiable core [2021-01-07 05:08:40,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:40,564 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:40,564 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 05:08:40,566 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:40,617 INFO L625 ElimStorePlain]: treesize reduction 10, result has 73.0 percent of original size [2021-01-07 05:08:40,619 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:40,619 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:27 [2021-01-07 05:08:40,991 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:08:41,079 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:08:41,093 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 11 treesize of output 7 [2021-01-07 05:08:41,095 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:41,102 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 11 treesize of output 7 [2021-01-07 05:08:41,103 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:41,140 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:41,143 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 2 xjuncts. [2021-01-07 05:08:41,143 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:52, output treesize:44 [2021-01-07 05:08:41,443 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:08:41,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:08:41,452 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-01-07 05:08:41,454 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:41,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:08:41,462 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2021-01-07 05:08:41,468 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:41,489 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:41,490 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 2 xjuncts. [2021-01-07 05:08:41,491 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:52, output treesize:27 [2021-01-07 05:08:42,159 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:42,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:42,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 32 [2021-01-07 05:08:42,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878275186] [2021-01-07 05:08:42,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-01-07 05:08:42,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:42,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-01-07 05:08:42,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 05:08:42,162 INFO L87 Difference]: Start difference. First operand 251 states and 289 transitions. Second operand 33 states. [2021-01-07 05:08:44,103 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 35 [2021-01-07 05:08:44,409 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 40 [2021-01-07 05:08:44,820 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 43 [2021-01-07 05:08:45,186 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2021-01-07 05:08:45,581 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43