/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/cstrspn-alloca-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:00:24,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:00:24,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:00:24,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:00:24,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:00:24,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:00:24,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:00:24,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:00:24,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:00:24,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:00:24,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:00:24,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:00:24,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:00:24,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:00:24,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:00:24,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:00:24,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:00:24,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:00:24,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:00:24,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:00:24,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:00:24,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:00:24,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:00:24,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:00:24,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:00:24,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:00:24,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:00:24,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:00:24,819 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-01-07 05:00:24,862 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:00:24,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:00:24,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:00:24,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:00:24,869 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:00:24,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:00:24,869 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:00:24,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:00:24,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:00:24,869 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:00:24,870 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:00:24,870 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:00:24,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:00:24,871 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:00:24,871 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:00:24,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:00:24,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:00:24,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:00:24,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:00:24,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:00:24,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:00:24,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:00:24,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:00:24,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:00:24,873 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:00:25,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:00:25,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:00:25,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:00:25,301 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:00:25,301 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:00:25,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrspn-alloca-1.i [2021-01-07 05:00:25,391 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6b7ca8e60/06f3625f7ab44b16b3f9677139d43019/FLAG5151454d9 [2021-01-07 05:00:26,088 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:00:26,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrspn-alloca-1.i [2021-01-07 05:00:26,109 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6b7ca8e60/06f3625f7ab44b16b3f9677139d43019/FLAG5151454d9 [2021-01-07 05:00:26,407 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6b7ca8e60/06f3625f7ab44b16b3f9677139d43019 [2021-01-07 05:00:26,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:00:26,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:00:26,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:00:26,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:00:26,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:00:26,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:00:26" (1/1) ... [2021-01-07 05:00:26,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e713ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:26, skipping insertion in model container [2021-01-07 05:00:26,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:00:26" (1/1) ... [2021-01-07 05:00:26,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:00:26,495 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~sc1~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~length1~0,] left hand side expression in assignment: lhs: VariableLHS[~length2~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString1~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString1~0,],offset],IdentifierExpression[~i~0,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString2~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString2~0,],offset],IdentifierExpression[~i~1,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString1~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString1~0,],offset],BinaryExpression[ARITHMINUS,IdentifierExpression[~length1~0,],IntegerLiteral[1]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString2~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString2~0,],offset],BinaryExpression[ARITHMINUS,IdentifierExpression[~length2~0,],IntegerLiteral[1]]]]] [2021-01-07 05:00:26,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:00:26,965 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~sc1~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~length1~0,] left hand side expression in assignment: lhs: VariableLHS[~length2~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString1~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString1~0,],offset],IdentifierExpression[~i~0,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString2~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString2~0,],offset],IdentifierExpression[~i~1,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString1~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString1~0,],offset],BinaryExpression[ARITHMINUS,IdentifierExpression[~length1~0,],IntegerLiteral[1]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString2~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString2~0,],offset],BinaryExpression[ARITHMINUS,IdentifierExpression[~length2~0,],IntegerLiteral[1]]]]] [2021-01-07 05:00:27,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:00:27,092 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:00:27,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:27 WrapperNode [2021-01-07 05:00:27,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:00:27,094 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:00:27,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:00:27,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:00:27,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:27" (1/1) ... [2021-01-07 05:00:27,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:27" (1/1) ... [2021-01-07 05:00:27,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:00:27,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:00:27,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:00:27,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:00:27,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:27" (1/1) ... [2021-01-07 05:00:27,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:27" (1/1) ... [2021-01-07 05:00:27,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:27" (1/1) ... [2021-01-07 05:00:27,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:27" (1/1) ... [2021-01-07 05:00:27,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:27" (1/1) ... [2021-01-07 05:00:27,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:27" (1/1) ... [2021-01-07 05:00:27,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:27" (1/1) ... [2021-01-07 05:00:27,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:00:27,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:00:27,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:00:27,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:00:27,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:00:27,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:00:27,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:00:27,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:00:27,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:00:27,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:00:27,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:00:27,872 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:00:27,872 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-07 05:00:27,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:00:27 BoogieIcfgContainer [2021-01-07 05:00:27,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:00:27,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:00:27,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:00:27,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:00:27,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:00:26" (1/3) ... [2021-01-07 05:00:27,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de1f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:00:27, skipping insertion in model container [2021-01-07 05:00:27,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:27" (2/3) ... [2021-01-07 05:00:27,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de1f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:00:27, skipping insertion in model container [2021-01-07 05:00:27,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:00:27" (3/3) ... [2021-01-07 05:00:27,883 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrspn-alloca-1.i [2021-01-07 05:00:27,890 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:00:27,899 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2021-01-07 05:00:27,919 INFO L253 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-01-07 05:00:27,942 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:00:27,943 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:00:27,943 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:00:27,943 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:00:27,943 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:00:27,943 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:00:27,943 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:00:27,944 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:00:27,959 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2021-01-07 05:00:27,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:00:27,965 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:27,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:27,967 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:27,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:27,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2021-01-07 05:00:27,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:27,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985401283] [2021-01-07 05:00:27,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:28,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:28,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985401283] [2021-01-07 05:00:28,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:28,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:00:28,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153479595] [2021-01-07 05:00:28,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:28,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:28,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:28,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:28,234 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2021-01-07 05:00:28,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:28,305 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2021-01-07 05:00:28,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:28,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-01-07 05:00:28,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:28,317 INFO L225 Difference]: With dead ends: 100 [2021-01-07 05:00:28,317 INFO L226 Difference]: Without dead ends: 96 [2021-01-07 05:00:28,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:28,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-01-07 05:00:28,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 55. [2021-01-07 05:00:28,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-07 05:00:28,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-01-07 05:00:28,361 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 7 [2021-01-07 05:00:28,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:28,361 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-01-07 05:00:28,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:28,362 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2021-01-07 05:00:28,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:00:28,362 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:28,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:28,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:00:28,363 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:28,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:28,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1806876138, now seen corresponding path program 1 times [2021-01-07 05:00:28,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:28,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533203525] [2021-01-07 05:00:28,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:28,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533203525] [2021-01-07 05:00:28,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:28,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:00:28,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143972839] [2021-01-07 05:00:28,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:00:28,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:28,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:00:28,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:00:28,434 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 3 states. [2021-01-07 05:00:28,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:28,528 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2021-01-07 05:00:28,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:00:28,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-01-07 05:00:28,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:28,535 INFO L225 Difference]: With dead ends: 53 [2021-01-07 05:00:28,535 INFO L226 Difference]: Without dead ends: 53 [2021-01-07 05:00:28,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:00:28,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-01-07 05:00:28,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-01-07 05:00:28,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-07 05:00:28,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-01-07 05:00:28,549 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 7 [2021-01-07 05:00:28,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:28,549 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-01-07 05:00:28,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:00:28,550 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-01-07 05:00:28,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:00:28,550 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:28,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:28,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:00:28,556 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:28,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:28,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2021-01-07 05:00:28,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:28,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623355756] [2021-01-07 05:00:28,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:28,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:28,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623355756] [2021-01-07 05:00:28,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:28,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:28,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753545740] [2021-01-07 05:00:28,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:28,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:28,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:28,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:28,640 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 4 states. [2021-01-07 05:00:28,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:28,765 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2021-01-07 05:00:28,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:28,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-01-07 05:00:28,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:28,767 INFO L225 Difference]: With dead ends: 97 [2021-01-07 05:00:28,767 INFO L226 Difference]: Without dead ends: 97 [2021-01-07 05:00:28,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:00:28,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-01-07 05:00:28,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 55. [2021-01-07 05:00:28,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-07 05:00:28,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2021-01-07 05:00:28,776 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 7 [2021-01-07 05:00:28,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:28,777 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2021-01-07 05:00:28,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:28,777 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2021-01-07 05:00:28,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:00:28,778 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:28,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:28,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-07 05:00:28,778 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:28,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:28,779 INFO L82 PathProgramCache]: Analyzing trace with hash -533876960, now seen corresponding path program 1 times [2021-01-07 05:00:28,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:28,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316952156] [2021-01-07 05:00:28,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:28,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:28,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316952156] [2021-01-07 05:00:28,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:28,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:28,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730394206] [2021-01-07 05:00:28,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:28,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:28,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:28,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:28,846 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 4 states. [2021-01-07 05:00:28,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:28,910 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2021-01-07 05:00:28,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:28,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-07 05:00:28,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:28,913 INFO L225 Difference]: With dead ends: 54 [2021-01-07 05:00:28,914 INFO L226 Difference]: Without dead ends: 54 [2021-01-07 05:00:28,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:28,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-07 05:00:28,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-01-07 05:00:28,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-07 05:00:28,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2021-01-07 05:00:28,927 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 9 [2021-01-07 05:00:28,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:28,927 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2021-01-07 05:00:28,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:28,927 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2021-01-07 05:00:28,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:00:28,931 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:28,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:28,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-07 05:00:28,931 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:28,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:28,932 INFO L82 PathProgramCache]: Analyzing trace with hash -533876908, now seen corresponding path program 1 times [2021-01-07 05:00:28,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:28,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629618397] [2021-01-07 05:00:28,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:29,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:29,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629618397] [2021-01-07 05:00:29,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:29,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:00:29,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536374144] [2021-01-07 05:00:29,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:29,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:29,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:29,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:29,030 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 4 states. [2021-01-07 05:00:29,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:29,061 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2021-01-07 05:00:29,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:29,065 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-07 05:00:29,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:29,068 INFO L225 Difference]: With dead ends: 98 [2021-01-07 05:00:29,069 INFO L226 Difference]: Without dead ends: 98 [2021-01-07 05:00:29,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:29,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-01-07 05:00:29,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 65. [2021-01-07 05:00:29,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-07 05:00:29,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2021-01-07 05:00:29,083 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 9 [2021-01-07 05:00:29,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:29,083 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2021-01-07 05:00:29,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:29,084 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2021-01-07 05:00:29,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:00:29,084 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:29,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:29,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-07 05:00:29,087 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:29,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:29,088 INFO L82 PathProgramCache]: Analyzing trace with hash -476618606, now seen corresponding path program 1 times [2021-01-07 05:00:29,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:29,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517375678] [2021-01-07 05:00:29,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:29,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:29,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517375678] [2021-01-07 05:00:29,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:29,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:00:29,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457201552] [2021-01-07 05:00:29,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:00:29,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:29,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:00:29,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:00:29,155 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand 3 states. [2021-01-07 05:00:29,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:29,188 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2021-01-07 05:00:29,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:00:29,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2021-01-07 05:00:29,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:29,190 INFO L225 Difference]: With dead ends: 63 [2021-01-07 05:00:29,191 INFO L226 Difference]: Without dead ends: 63 [2021-01-07 05:00:29,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:00:29,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-01-07 05:00:29,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-01-07 05:00:29,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-01-07 05:00:29,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2021-01-07 05:00:29,207 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 9 [2021-01-07 05:00:29,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:29,207 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2021-01-07 05:00:29,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:00:29,207 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2021-01-07 05:00:29,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:00:29,208 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:29,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:29,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-07 05:00:29,209 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:29,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:29,210 INFO L82 PathProgramCache]: Analyzing trace with hash -476618605, now seen corresponding path program 1 times [2021-01-07 05:00:29,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:29,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200348322] [2021-01-07 05:00:29,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:29,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:29,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200348322] [2021-01-07 05:00:29,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:29,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:00:29,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887371806] [2021-01-07 05:00:29,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:00:29,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:29,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:00:29,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:00:29,325 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand 5 states. [2021-01-07 05:00:29,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:29,426 INFO L93 Difference]: Finished difference Result 98 states and 114 transitions. [2021-01-07 05:00:29,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:00:29,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2021-01-07 05:00:29,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:29,427 INFO L225 Difference]: With dead ends: 98 [2021-01-07 05:00:29,428 INFO L226 Difference]: Without dead ends: 98 [2021-01-07 05:00:29,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:00:29,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-01-07 05:00:29,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 65. [2021-01-07 05:00:29,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-07 05:00:29,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2021-01-07 05:00:29,436 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 9 [2021-01-07 05:00:29,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:29,436 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2021-01-07 05:00:29,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:00:29,437 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2021-01-07 05:00:29,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-07 05:00:29,437 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:29,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:29,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-07 05:00:29,438 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:29,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:29,438 INFO L82 PathProgramCache]: Analyzing trace with hash 629683418, now seen corresponding path program 1 times [2021-01-07 05:00:29,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:29,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198238345] [2021-01-07 05:00:29,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:29,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:29,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198238345] [2021-01-07 05:00:29,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:29,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:29,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648631689] [2021-01-07 05:00:29,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:29,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:29,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:29,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:29,493 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand 4 states. [2021-01-07 05:00:29,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:29,534 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2021-01-07 05:00:29,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:29,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-01-07 05:00:29,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:29,536 INFO L225 Difference]: With dead ends: 64 [2021-01-07 05:00:29,536 INFO L226 Difference]: Without dead ends: 64 [2021-01-07 05:00:29,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:29,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-01-07 05:00:29,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-01-07 05:00:29,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-01-07 05:00:29,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions. [2021-01-07 05:00:29,545 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 10 [2021-01-07 05:00:29,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:29,545 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions. [2021-01-07 05:00:29,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:29,545 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2021-01-07 05:00:29,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-07 05:00:29,547 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:29,547 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:29,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-07 05:00:29,548 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:29,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:29,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2021-01-07 05:00:29,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:29,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109524319] [2021-01-07 05:00:29,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:29,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109524319] [2021-01-07 05:00:29,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141534387] [2021-01-07 05:00:29,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:29,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-07 05:00:29,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:29,900 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_22|], 1=[|v_#valid_30|]} [2021-01-07 05:00:29,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:00:29,926 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:00:29,929 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:29,941 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:29,950 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-07 05:00:29,959 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:29,969 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:29,976 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:29,976 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2021-01-07 05:00:30,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:30,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:30,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-01-07 05:00:30,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345162427] [2021-01-07 05:00:30,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:00:30,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:30,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:00:30,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:00:30,050 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand 6 states. [2021-01-07 05:00:30,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:30,207 INFO L93 Difference]: Finished difference Result 107 states and 124 transitions. [2021-01-07 05:00:30,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:00:30,207 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-01-07 05:00:30,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:30,208 INFO L225 Difference]: With dead ends: 107 [2021-01-07 05:00:30,209 INFO L226 Difference]: Without dead ends: 107 [2021-01-07 05:00:30,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:00:30,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-01-07 05:00:30,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 59. [2021-01-07 05:00:30,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-01-07 05:00:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2021-01-07 05:00:30,213 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 11 [2021-01-07 05:00:30,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:30,213 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2021-01-07 05:00:30,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:00:30,214 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2021-01-07 05:00:30,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-07 05:00:30,214 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:30,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:30,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-07 05:00:30,428 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:30,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:30,429 INFO L82 PathProgramCache]: Analyzing trace with hash -464624131, now seen corresponding path program 1 times [2021-01-07 05:00:30,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:30,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594137326] [2021-01-07 05:00:30,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:30,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:30,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594137326] [2021-01-07 05:00:30,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:30,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:30,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045518017] [2021-01-07 05:00:30,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:30,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:30,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:30,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:30,478 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 4 states. [2021-01-07 05:00:30,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:30,530 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2021-01-07 05:00:30,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:30,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-01-07 05:00:30,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:30,531 INFO L225 Difference]: With dead ends: 57 [2021-01-07 05:00:30,532 INFO L226 Difference]: Without dead ends: 57 [2021-01-07 05:00:30,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:00:30,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-01-07 05:00:30,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-01-07 05:00:30,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-01-07 05:00:30,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2021-01-07 05:00:30,539 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 12 [2021-01-07 05:00:30,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:30,539 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2021-01-07 05:00:30,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:30,539 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2021-01-07 05:00:30,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-07 05:00:30,541 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:30,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:30,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-07 05:00:30,542 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:30,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:30,542 INFO L82 PathProgramCache]: Analyzing trace with hash -464624130, now seen corresponding path program 1 times [2021-01-07 05:00:30,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:30,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343064376] [2021-01-07 05:00:30,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:30,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:30,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343064376] [2021-01-07 05:00:30,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:30,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:00:30,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880292945] [2021-01-07 05:00:30,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:00:30,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:30,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:00:30,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:00:30,618 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 6 states. [2021-01-07 05:00:30,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:30,708 INFO L93 Difference]: Finished difference Result 80 states and 93 transitions. [2021-01-07 05:00:30,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:00:30,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-01-07 05:00:30,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:30,710 INFO L225 Difference]: With dead ends: 80 [2021-01-07 05:00:30,710 INFO L226 Difference]: Without dead ends: 80 [2021-01-07 05:00:30,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:00:30,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-01-07 05:00:30,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-01-07 05:00:30,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-01-07 05:00:30,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2021-01-07 05:00:30,713 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 12 [2021-01-07 05:00:30,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:30,714 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2021-01-07 05:00:30,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:00:30,714 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2021-01-07 05:00:30,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-07 05:00:30,714 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:30,715 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:30,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-07 05:00:30,715 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:30,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:30,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1862804906, now seen corresponding path program 1 times [2021-01-07 05:00:30,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:30,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886213165] [2021-01-07 05:00:30,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:30,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886213165] [2021-01-07 05:00:30,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345088109] [2021-01-07 05:00:30,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:30,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-07 05:00:30,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:30,855 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:30,856 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:00:30,859 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:30,877 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:00:30,880 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:30,880 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:00:30,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:30,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:30,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-01-07 05:00:30,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230085784] [2021-01-07 05:00:30,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:00:30,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:30,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:00:30,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:00:30,921 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 7 states. [2021-01-07 05:00:31,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:31,037 INFO L93 Difference]: Finished difference Result 92 states and 107 transitions. [2021-01-07 05:00:31,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:00:31,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2021-01-07 05:00:31,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:31,038 INFO L225 Difference]: With dead ends: 92 [2021-01-07 05:00:31,038 INFO L226 Difference]: Without dead ends: 92 [2021-01-07 05:00:31,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:00:31,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-01-07 05:00:31,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 57. [2021-01-07 05:00:31,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-01-07 05:00:31,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2021-01-07 05:00:31,041 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 13 [2021-01-07 05:00:31,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:31,042 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2021-01-07 05:00:31,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:00:31,042 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2021-01-07 05:00:31,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-07 05:00:31,043 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:31,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:31,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-07 05:00:31,257 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:31,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:31,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1433224404, now seen corresponding path program 1 times [2021-01-07 05:00:31,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:31,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737031733] [2021-01-07 05:00:31,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:31,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:31,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737031733] [2021-01-07 05:00:31,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:31,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:31,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317047752] [2021-01-07 05:00:31,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:31,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:31,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:31,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:31,379 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 4 states. [2021-01-07 05:00:31,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:31,415 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2021-01-07 05:00:31,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:31,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-01-07 05:00:31,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:31,416 INFO L225 Difference]: With dead ends: 56 [2021-01-07 05:00:31,416 INFO L226 Difference]: Without dead ends: 53 [2021-01-07 05:00:31,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:31,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-01-07 05:00:31,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-01-07 05:00:31,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-07 05:00:31,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-01-07 05:00:31,420 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 16 [2021-01-07 05:00:31,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:31,421 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-01-07 05:00:31,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:31,435 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-01-07 05:00:31,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-07 05:00:31,436 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:31,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:31,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-07 05:00:31,436 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:31,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:31,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1433207485, now seen corresponding path program 1 times [2021-01-07 05:00:31,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:31,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12108240] [2021-01-07 05:00:31,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:31,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:31,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12108240] [2021-01-07 05:00:31,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:31,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:00:31,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526146102] [2021-01-07 05:00:31,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:00:31,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:31,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:00:31,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:00:31,468 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 5 states. [2021-01-07 05:00:31,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:31,529 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2021-01-07 05:00:31,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:00:31,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2021-01-07 05:00:31,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:31,530 INFO L225 Difference]: With dead ends: 50 [2021-01-07 05:00:31,530 INFO L226 Difference]: Without dead ends: 50 [2021-01-07 05:00:31,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:00:31,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-07 05:00:31,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-01-07 05:00:31,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-01-07 05:00:31,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2021-01-07 05:00:31,533 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 16 [2021-01-07 05:00:31,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:31,533 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2021-01-07 05:00:31,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:00:31,533 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2021-01-07 05:00:31,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-07 05:00:31,534 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:31,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:31,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-07 05:00:31,534 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:31,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:31,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1433207484, now seen corresponding path program 1 times [2021-01-07 05:00:31,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:31,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552369521] [2021-01-07 05:00:31,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:31,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:31,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552369521] [2021-01-07 05:00:31,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:31,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-07 05:00:31,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775943627] [2021-01-07 05:00:31,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:00:31,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:31,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:00:31,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:00:31,601 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 7 states. [2021-01-07 05:00:31,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:31,690 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2021-01-07 05:00:31,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:00:31,691 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2021-01-07 05:00:31,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:31,691 INFO L225 Difference]: With dead ends: 62 [2021-01-07 05:00:31,692 INFO L226 Difference]: Without dead ends: 62 [2021-01-07 05:00:31,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:00:31,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-01-07 05:00:31,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2021-01-07 05:00:31,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-01-07 05:00:31,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2021-01-07 05:00:31,694 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 16 [2021-01-07 05:00:31,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:31,695 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2021-01-07 05:00:31,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:00:31,695 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2021-01-07 05:00:31,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-07 05:00:31,695 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:31,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:31,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-07 05:00:31,696 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:31,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:31,696 INFO L82 PathProgramCache]: Analyzing trace with hash 43271131, now seen corresponding path program 1 times [2021-01-07 05:00:31,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:31,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502491265] [2021-01-07 05:00:31,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:31,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:31,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502491265] [2021-01-07 05:00:31,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:31,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:31,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023537515] [2021-01-07 05:00:31,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:00:31,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:31,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:00:31,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:00:31,719 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 3 states. [2021-01-07 05:00:31,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:31,728 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2021-01-07 05:00:31,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:00:31,728 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-01-07 05:00:31,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:31,729 INFO L225 Difference]: With dead ends: 59 [2021-01-07 05:00:31,729 INFO L226 Difference]: Without dead ends: 59 [2021-01-07 05:00:31,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:00:31,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-01-07 05:00:31,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-01-07 05:00:31,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-01-07 05:00:31,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2021-01-07 05:00:31,732 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 20 [2021-01-07 05:00:31,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:31,732 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2021-01-07 05:00:31,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:00:31,732 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2021-01-07 05:00:31,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-07 05:00:31,733 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:31,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:31,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-07 05:00:31,733 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:31,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:31,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1371974184, now seen corresponding path program 1 times [2021-01-07 05:00:31,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:31,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726364183] [2021-01-07 05:00:31,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:31,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726364183] [2021-01-07 05:00:31,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:31,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-07 05:00:31,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178203511] [2021-01-07 05:00:31,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:00:31,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:31,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:00:31,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:00:31,848 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 7 states. [2021-01-07 05:00:31,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:31,959 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2021-01-07 05:00:31,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:00:31,959 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2021-01-07 05:00:31,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:31,960 INFO L225 Difference]: With dead ends: 71 [2021-01-07 05:00:31,960 INFO L226 Difference]: Without dead ends: 54 [2021-01-07 05:00:31,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:00:31,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-07 05:00:31,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-01-07 05:00:31,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-07 05:00:31,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2021-01-07 05:00:31,962 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 22 [2021-01-07 05:00:31,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:31,963 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2021-01-07 05:00:31,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:00:31,963 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2021-01-07 05:00:31,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-07 05:00:31,963 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:31,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:31,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-07 05:00:31,964 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:31,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:31,965 INFO L82 PathProgramCache]: Analyzing trace with hash 2105344662, now seen corresponding path program 1 times [2021-01-07 05:00:31,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:31,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487385738] [2021-01-07 05:00:31,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:32,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:32,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487385738] [2021-01-07 05:00:32,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:32,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-07 05:00:32,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959348580] [2021-01-07 05:00:32,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:00:32,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:32,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:00:32,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:00:32,125 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 8 states. [2021-01-07 05:00:32,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:32,255 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2021-01-07 05:00:32,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:00:32,255 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2021-01-07 05:00:32,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:32,256 INFO L225 Difference]: With dead ends: 74 [2021-01-07 05:00:32,256 INFO L226 Difference]: Without dead ends: 62 [2021-01-07 05:00:32,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:00:32,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-01-07 05:00:32,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2021-01-07 05:00:32,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-01-07 05:00:32,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2021-01-07 05:00:32,259 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 22 [2021-01-07 05:00:32,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:32,260 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2021-01-07 05:00:32,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:00:32,260 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2021-01-07 05:00:32,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-07 05:00:32,261 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:32,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:32,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-07 05:00:32,261 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:32,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:32,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1877695219, now seen corresponding path program 1 times [2021-01-07 05:00:32,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:32,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602923025] [2021-01-07 05:00:32,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:32,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602923025] [2021-01-07 05:00:32,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:32,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-07 05:00:32,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003208604] [2021-01-07 05:00:32,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:00:32,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:32,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:00:32,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:00:32,369 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 9 states. [2021-01-07 05:00:32,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:32,527 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2021-01-07 05:00:32,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:00:32,528 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2021-01-07 05:00:32,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:32,529 INFO L225 Difference]: With dead ends: 75 [2021-01-07 05:00:32,529 INFO L226 Difference]: Without dead ends: 75 [2021-01-07 05:00:32,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:00:32,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-01-07 05:00:32,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2021-01-07 05:00:32,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-01-07 05:00:32,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2021-01-07 05:00:32,532 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 26 [2021-01-07 05:00:32,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:32,532 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2021-01-07 05:00:32,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:00:32,532 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2021-01-07 05:00:32,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-07 05:00:32,533 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:32,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:32,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-01-07 05:00:32,533 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:32,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:32,534 INFO L82 PathProgramCache]: Analyzing trace with hash 72256885, now seen corresponding path program 1 times [2021-01-07 05:00:32,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:32,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743524324] [2021-01-07 05:00:32,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:32,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:32,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743524324] [2021-01-07 05:00:32,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:32,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-01-07 05:00:32,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012047946] [2021-01-07 05:00:32,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:00:32,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:32,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:00:32,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:00:32,691 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand 11 states. [2021-01-07 05:00:32,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:32,962 INFO L93 Difference]: Finished difference Result 96 states and 107 transitions. [2021-01-07 05:00:32,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-07 05:00:32,963 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2021-01-07 05:00:32,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:32,964 INFO L225 Difference]: With dead ends: 96 [2021-01-07 05:00:32,964 INFO L226 Difference]: Without dead ends: 96 [2021-01-07 05:00:32,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-01-07 05:00:32,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-01-07 05:00:32,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 74. [2021-01-07 05:00:32,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-01-07 05:00:32,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2021-01-07 05:00:32,967 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 26 [2021-01-07 05:00:32,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:32,968 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2021-01-07 05:00:32,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-07 05:00:32,968 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2021-01-07 05:00:32,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-07 05:00:32,969 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:32,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:32,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-01-07 05:00:32,969 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:32,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:32,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1740534735, now seen corresponding path program 1 times [2021-01-07 05:00:32,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:32,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168324379] [2021-01-07 05:00:32,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:33,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:33,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168324379] [2021-01-07 05:00:33,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:33,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-01-07 05:00:33,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803333817] [2021-01-07 05:00:33,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-07 05:00:33,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:33,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-07 05:00:33,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:00:33,055 INFO L87 Difference]: Start difference. First operand 74 states and 85 transitions. Second operand 10 states. [2021-01-07 05:00:33,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:33,280 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2021-01-07 05:00:33,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-07 05:00:33,281 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2021-01-07 05:00:33,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:33,282 INFO L225 Difference]: With dead ends: 75 [2021-01-07 05:00:33,282 INFO L226 Difference]: Without dead ends: 51 [2021-01-07 05:00:33,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-01-07 05:00:33,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-01-07 05:00:33,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2021-01-07 05:00:33,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-01-07 05:00:33,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2021-01-07 05:00:33,285 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 27 [2021-01-07 05:00:33,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:33,285 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2021-01-07 05:00:33,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-07 05:00:33,286 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2021-01-07 05:00:33,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-07 05:00:33,286 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:33,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:33,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-01-07 05:00:33,287 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:33,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:33,287 INFO L82 PathProgramCache]: Analyzing trace with hash -145898734, now seen corresponding path program 1 times [2021-01-07 05:00:33,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:33,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433607497] [2021-01-07 05:00:33,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:33,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:33,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:33,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433607497] [2021-01-07 05:00:33,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871781053] [2021-01-07 05:00:33,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:33,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-07 05:00:33,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:33,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:33,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2021-01-07 05:00:33,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119791303] [2021-01-07 05:00:33,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-07 05:00:33,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:33,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-07 05:00:33,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:00:33,679 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 16 states. [2021-01-07 05:00:33,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:33,877 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2021-01-07 05:00:33,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:00:33,880 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2021-01-07 05:00:33,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:33,880 INFO L225 Difference]: With dead ends: 71 [2021-01-07 05:00:33,881 INFO L226 Difference]: Without dead ends: 69 [2021-01-07 05:00:33,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:00:33,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-01-07 05:00:33,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 55. [2021-01-07 05:00:33,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-07 05:00:33,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2021-01-07 05:00:33,883 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 30 [2021-01-07 05:00:33,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:33,884 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2021-01-07 05:00:33,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-07 05:00:33,884 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2021-01-07 05:00:33,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-07 05:00:33,884 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:33,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:34,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-07 05:00:34,099 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:34,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:34,100 INFO L82 PathProgramCache]: Analyzing trace with hash 36573013, now seen corresponding path program 1 times [2021-01-07 05:00:34,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:34,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813752569] [2021-01-07 05:00:34,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:34,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:34,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813752569] [2021-01-07 05:00:34,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654760778] [2021-01-07 05:00:34,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:34,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-07 05:00:34,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:34,289 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_24|], 1=[|v_#valid_31|]} [2021-01-07 05:00:34,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:00:34,294 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:00:34,295 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:34,304 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:34,309 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-07 05:00:34,314 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:34,323 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:34,326 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:34,327 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2021-01-07 05:00:34,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:34,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:34,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-01-07 05:00:34,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321797647] [2021-01-07 05:00:34,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-07 05:00:34,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:34,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-07 05:00:34,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:00:34,455 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 12 states. [2021-01-07 05:00:34,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:34,733 INFO L93 Difference]: Finished difference Result 117 states and 131 transitions. [2021-01-07 05:00:34,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:00:34,734 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2021-01-07 05:00:34,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:34,735 INFO L225 Difference]: With dead ends: 117 [2021-01-07 05:00:34,735 INFO L226 Difference]: Without dead ends: 117 [2021-01-07 05:00:34,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:00:34,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-01-07 05:00:34,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 81. [2021-01-07 05:00:34,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-01-07 05:00:34,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2021-01-07 05:00:34,738 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 33 [2021-01-07 05:00:34,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:34,739 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2021-01-07 05:00:34,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-07 05:00:34,739 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2021-01-07 05:00:34,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-07 05:00:34,739 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:34,739 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:34,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:34,953 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:34,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:34,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1001387738, now seen corresponding path program 2 times [2021-01-07 05:00:34,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:34,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312511219] [2021-01-07 05:00:34,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:35,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312511219] [2021-01-07 05:00:35,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967387968] [2021-01-07 05:00:35,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:35,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:00:35,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:35,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-07 05:00:35,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:35,401 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:00:35,402 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:35,407 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:35,409 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:00:35,410 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:00:35,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:35,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:35,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2021-01-07 05:00:35,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783766596] [2021-01-07 05:00:35,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-07 05:00:35,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:35,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-07 05:00:35,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:00:35,751 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand 23 states. [2021-01-07 05:00:36,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:36,406 INFO L93 Difference]: Finished difference Result 128 states and 142 transitions. [2021-01-07 05:00:36,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-07 05:00:36,407 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 36 [2021-01-07 05:00:36,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:36,408 INFO L225 Difference]: With dead ends: 128 [2021-01-07 05:00:36,408 INFO L226 Difference]: Without dead ends: 122 [2021-01-07 05:00:36,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=207, Invalid=849, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 05:00:36,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-01-07 05:00:36,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 117. [2021-01-07 05:00:36,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2021-01-07 05:00:36,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 133 transitions. [2021-01-07 05:00:36,412 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 133 transitions. Word has length 36 [2021-01-07 05:00:36,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:36,412 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 133 transitions. [2021-01-07 05:00:36,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-07 05:00:36,412 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 133 transitions. [2021-01-07 05:00:36,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-07 05:00:36,413 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:36,413 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:36,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-01-07 05:00:36,629 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:36,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:36,630 INFO L82 PathProgramCache]: Analyzing trace with hash -304963965, now seen corresponding path program 3 times [2021-01-07 05:00:36,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:36,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492490703] [2021-01-07 05:00:36,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:36,797 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:36,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492490703] [2021-01-07 05:00:36,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884145964] [2021-01-07 05:00:36,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:36,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-07 05:00:36,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:36,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-07 05:00:36,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:36,931 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:36,932 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:00:36,936 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:36,970 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:00:36,972 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:36,973 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:00:37,221 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:37,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:37,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-01-07 05:00:37,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348379952] [2021-01-07 05:00:37,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-07 05:00:37,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:37,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-07 05:00:37,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:00:37,224 INFO L87 Difference]: Start difference. First operand 117 states and 133 transitions. Second operand 20 states. [2021-01-07 05:00:37,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:37,650 INFO L93 Difference]: Finished difference Result 164 states and 181 transitions. [2021-01-07 05:00:37,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:00:37,650 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 40 [2021-01-07 05:00:37,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:37,654 INFO L225 Difference]: With dead ends: 164 [2021-01-07 05:00:37,654 INFO L226 Difference]: Without dead ends: 162 [2021-01-07 05:00:37,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2021-01-07 05:00:37,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-01-07 05:00:37,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 129. [2021-01-07 05:00:37,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2021-01-07 05:00:37,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 147 transitions. [2021-01-07 05:00:37,661 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 147 transitions. Word has length 40 [2021-01-07 05:00:37,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:37,661 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 147 transitions. [2021-01-07 05:00:37,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-07 05:00:37,661 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 147 transitions. [2021-01-07 05:00:37,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-07 05:00:37,662 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:37,662 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:37,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:37,876 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:37,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:37,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1930803928, now seen corresponding path program 2 times [2021-01-07 05:00:37,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:37,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274974924] [2021-01-07 05:00:37,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:38,269 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:38,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274974924] [2021-01-07 05:00:38,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752799619] [2021-01-07 05:00:38,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:38,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:00:38,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:38,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 70 conjunts are in the unsatisfiable core [2021-01-07 05:00:38,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:38,366 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-07 05:00:38,368 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:38,372 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:38,372 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:38,372 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-07 05:00:38,470 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:00:38,474 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:38,482 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:38,483 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:00:38,484 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2021-01-07 05:00:38,522 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-01-07 05:00:38,524 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:38,533 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:38,535 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:00:38,535 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:31 [2021-01-07 05:00:39,019 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2021-01-07 05:00:39,693 INFO L348 Elim1Store]: treesize reduction 10, result has 78.3 percent of original size [2021-01-07 05:00:39,694 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 56 treesize of output 55 [2021-01-07 05:00:39,698 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:39,720 INFO L625 ElimStorePlain]: treesize reduction 9, result has 71.0 percent of original size [2021-01-07 05:00:39,723 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:39,723 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:66, output treesize:8 [2021-01-07 05:00:39,794 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:39,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:39,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 22] total 30 [2021-01-07 05:00:39,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098116671] [2021-01-07 05:00:39,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-01-07 05:00:39,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:39,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-01-07 05:00:39,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2021-01-07 05:00:39,797 INFO L87 Difference]: Start difference. First operand 129 states and 147 transitions. Second operand 30 states. [2021-01-07 05:00:41,046 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2021-01-07 05:00:41,315 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2021-01-07 05:00:41,563 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-01-07 05:00:41,791 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-01-07 05:00:41,969 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2021-01-07 05:00:42,161 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2021-01-07 05:00:42,348 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2021-01-07 05:00:42,542 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-01-07 05:00:42,735 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-01-07 05:00:43,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:43,070 INFO L93 Difference]: Finished difference Result 211 states and 234 transitions. [2021-01-07 05:00:43,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-07 05:00:43,071 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 46 [2021-01-07 05:00:43,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:43,072 INFO L225 Difference]: With dead ends: 211 [2021-01-07 05:00:43,073 INFO L226 Difference]: Without dead ends: 183 [2021-01-07 05:00:43,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=465, Invalid=2085, Unknown=0, NotChecked=0, Total=2550 [2021-01-07 05:00:43,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-01-07 05:00:43,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 174. [2021-01-07 05:00:43,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2021-01-07 05:00:43,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 198 transitions. [2021-01-07 05:00:43,098 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 198 transitions. Word has length 46 [2021-01-07 05:00:43,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:43,100 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 198 transitions. [2021-01-07 05:00:43,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-01-07 05:00:43,100 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 198 transitions. [2021-01-07 05:00:43,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-07 05:00:43,100 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:43,101 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:43,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-07 05:00:43,315 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:43,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:43,316 INFO L82 PathProgramCache]: Analyzing trace with hash 371510231, now seen corresponding path program 4 times [2021-01-07 05:00:43,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:43,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481919989] [2021-01-07 05:00:43,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:44,027 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:44,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481919989] [2021-01-07 05:00:44,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345066952] [2021-01-07 05:00:44,028 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:44,097 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:00:44,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:44,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-07 05:00:44,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:44,128 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:44,129 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:00:44,130 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:44,146 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:00:44,147 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:44,148 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:00:44,332 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-01-07 05:00:44,332 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:44,338 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:44,338 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:44,338 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2021-01-07 05:00:44,617 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 05:00:44,620 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 05:00:44,630 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:44,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:00:44,635 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:44,636 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 05:00:44,637 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:44,643 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:44,648 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 05:00:44,648 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:34, output treesize:3 [2021-01-07 05:00:44,659 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:44,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:44,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 30 [2021-01-07 05:00:44,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910672999] [2021-01-07 05:00:44,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-01-07 05:00:44,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:44,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-01-07 05:00:44,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=790, Unknown=0, NotChecked=0, Total=870 [2021-01-07 05:00:44,661 INFO L87 Difference]: Start difference. First operand 174 states and 198 transitions. Second operand 30 states. [2021-01-07 05:00:46,248 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2021-01-07 05:00:46,971 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2021-01-07 05:00:47,311 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2021-01-07 05:00:47,467 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2021-01-07 05:00:47,630 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2021-01-07 05:00:48,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:48,259 INFO L93 Difference]: Finished difference Result 283 states and 305 transitions. [2021-01-07 05:00:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-01-07 05:00:48,260 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 46 [2021-01-07 05:00:48,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:48,262 INFO L225 Difference]: With dead ends: 283 [2021-01-07 05:00:48,262 INFO L226 Difference]: Without dead ends: 255 [2021-01-07 05:00:48,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=579, Invalid=3203, Unknown=0, NotChecked=0, Total=3782 [2021-01-07 05:00:48,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-01-07 05:00:48,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 226. [2021-01-07 05:00:48,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2021-01-07 05:00:48,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 255 transitions. [2021-01-07 05:00:48,270 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 255 transitions. Word has length 46 [2021-01-07 05:00:48,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:48,271 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 255 transitions. [2021-01-07 05:00:48,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-01-07 05:00:48,271 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 255 transitions. [2021-01-07 05:00:48,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-07 05:00:48,272 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:48,272 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:48,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-07 05:00:48,487 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:48,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:48,488 INFO L82 PathProgramCache]: Analyzing trace with hash -129625868, now seen corresponding path program 5 times [2021-01-07 05:00:48,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:48,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576417165] [2021-01-07 05:00:48,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:48,686 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:48,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576417165] [2021-01-07 05:00:48,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578517477] [2021-01-07 05:00:48,687 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:48,770 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-01-07 05:00:48,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:48,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-07 05:00:48,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:48,796 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:48,796 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:00:48,798 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:48,813 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:00:48,815 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:48,816 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:00:49,156 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:49,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:49,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-01-07 05:00:49,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525163649] [2021-01-07 05:00:49,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-07 05:00:49,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:49,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-07 05:00:49,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:00:49,158 INFO L87 Difference]: Start difference. First operand 226 states and 255 transitions. Second operand 24 states. [2021-01-07 05:00:50,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:50,026 INFO L93 Difference]: Finished difference Result 292 states and 322 transitions. [2021-01-07 05:00:50,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-07 05:00:50,027 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 50 [2021-01-07 05:00:50,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:50,029 INFO L225 Difference]: With dead ends: 292 [2021-01-07 05:00:50,029 INFO L226 Difference]: Without dead ends: 290 [2021-01-07 05:00:50,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2021-01-07 05:00:50,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-01-07 05:00:50,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 244. [2021-01-07 05:00:50,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2021-01-07 05:00:50,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 275 transitions. [2021-01-07 05:00:50,038 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 275 transitions. Word has length 50 [2021-01-07 05:00:50,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:50,038 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 275 transitions. [2021-01-07 05:00:50,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-01-07 05:00:50,038 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 275 transitions. [2021-01-07 05:00:50,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-07 05:00:50,039 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:50,039 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:50,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-01-07 05:00:50,247 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:50,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:50,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1006205749, now seen corresponding path program 3 times [2021-01-07 05:00:50,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:50,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969501446] [2021-01-07 05:00:50,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:50,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969501446] [2021-01-07 05:00:50,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940485262] [2021-01-07 05:00:50,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:50,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-07 05:00:50,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:50,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 48 conjunts are in the unsatisfiable core [2021-01-07 05:00:50,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:50,505 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_29|], 1=[|v_#valid_33|]} [2021-01-07 05:00:50,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:00:50,511 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 05:00:50,512 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:50,523 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:50,529 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-07 05:00:50,534 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:50,547 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:50,548 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:50,548 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:24 [2021-01-07 05:00:50,631 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 16 treesize of output 12 [2021-01-07 05:00:50,632 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:50,643 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:50,644 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:50,644 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2021-01-07 05:00:50,683 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2021-01-07 05:00:50,685 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:50,694 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:50,696 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:00:50,696 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:36 [2021-01-07 05:00:51,366 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:51,366 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 75 [2021-01-07 05:00:51,369 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:51,415 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:51,418 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-07 05:00:51,419 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:00:51,420 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:00:51,426 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:00:51,429 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:00:51,430 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:00:51,433 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:00:51,436 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 05:00:51,436 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:66, output treesize:41 [2021-01-07 05:00:51,637 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-01-07 05:00:51,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:51,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15] total 22 [2021-01-07 05:00:51,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752644639] [2021-01-07 05:00:51,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-07 05:00:51,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:51,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-07 05:00:51,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:00:51,639 INFO L87 Difference]: Start difference. First operand 244 states and 275 transitions. Second operand 23 states. [2021-01-07 05:00:52,784 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2021-01-07 05:00:52,945 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2021-01-07 05:00:53,192 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2021-01-07 05:00:53,540 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2021-01-07 05:00:53,848 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2021-01-07 05:00:54,018 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2021-01-07 05:00:54,273 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2021-01-07 05:00:54,423 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2021-01-07 05:00:54,638 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2021-01-07 05:00:54,806 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2021-01-07 05:00:54,999 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2021-01-07 05:00:55,146 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2021-01-07 05:00:55,340 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2021-01-07 05:00:55,505 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2021-01-07 05:00:55,667 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2021-01-07 05:00:55,929 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2021-01-07 05:00:56,141 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2021-01-07 05:00:56,336 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2021-01-07 05:00:56,504 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2021-01-07 05:00:56,689 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2021-01-07 05:00:57,129 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2021-01-07 05:00:57,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:57,329 INFO L93 Difference]: Finished difference Result 399 states and 435 transitions. [2021-01-07 05:00:57,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-01-07 05:00:57,329 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 50 [2021-01-07 05:00:57,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:57,332 INFO L225 Difference]: With dead ends: 399 [2021-01-07 05:00:57,332 INFO L226 Difference]: Without dead ends: 399 [2021-01-07 05:00:57,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=727, Invalid=2579, Unknown=0, NotChecked=0, Total=3306 [2021-01-07 05:00:57,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-01-07 05:00:57,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 314. [2021-01-07 05:00:57,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2021-01-07 05:00:57,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 355 transitions. [2021-01-07 05:00:57,349 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 355 transitions. Word has length 50 [2021-01-07 05:00:57,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:57,349 INFO L481 AbstractCegarLoop]: Abstraction has 314 states and 355 transitions. [2021-01-07 05:00:57,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-07 05:00:57,349 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 355 transitions. [2021-01-07 05:00:57,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-07 05:00:57,350 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:57,350 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:57,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-07 05:00:57,557 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:00:57,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:57,558 INFO L82 PathProgramCache]: Analyzing trace with hash 509273480, now seen corresponding path program 6 times [2021-01-07 05:00:57,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:57,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352608681] [2021-01-07 05:00:57,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:57,795 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:57,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352608681] [2021-01-07 05:00:57,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173504038] [2021-01-07 05:00:57,795 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:57,892 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-07 05:00:57,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:57,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 42 conjunts are in the unsatisfiable core [2021-01-07 05:00:57,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:57,919 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:57,920 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:00:57,921 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:57,941 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:00:57,943 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:57,943 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:00:58,185 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-01-07 05:00:58,186 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:58,194 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:58,195 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:58,195 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2021-01-07 05:00:58,422 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 05:00:58,428 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 05:00:58,438 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:58,440 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:00:58,440 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:28 [2021-01-07 05:00:58,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:00:58,749 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:58,752 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 33 [2021-01-07 05:00:58,754 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:00:58,755 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:58,775 INFO L625 ElimStorePlain]: treesize reduction 7, result has 70.8 percent of original size [2021-01-07 05:00:58,777 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 05:00:58,777 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:3 [2021-01-07 05:00:58,805 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 21 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:00:58,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:58,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 33 [2021-01-07 05:00:58,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348691128] [2021-01-07 05:00:58,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-01-07 05:00:58,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:58,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-01-07 05:00:58,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=960, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 05:00:58,807 INFO L87 Difference]: Start difference. First operand 314 states and 355 transitions. Second operand 33 states. [2021-01-07 05:01:01,409 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2021-01-07 05:01:01,667 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2021-01-07 05:01:01,890 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-01-07 05:01:02,107 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2021-01-07 05:01:02,304 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2021-01-07 05:01:02,481 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2021-01-07 05:01:02,695 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2021-01-07 05:01:02,876 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2021-01-07 05:01:03,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:03,198 INFO L93 Difference]: Finished difference Result 500 states and 544 transitions. [2021-01-07 05:01:03,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-07 05:01:03,199 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 56 [2021-01-07 05:01:03,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:03,202 INFO L225 Difference]: With dead ends: 500 [2021-01-07 05:01:03,202 INFO L226 Difference]: Without dead ends: 463 [2021-01-07 05:01:03,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=594, Invalid=3438, Unknown=0, NotChecked=0, Total=4032 [2021-01-07 05:01:03,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-01-07 05:01:03,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 403. [2021-01-07 05:01:03,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2021-01-07 05:01:03,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 453 transitions. [2021-01-07 05:01:03,217 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 453 transitions. Word has length 56 [2021-01-07 05:01:03,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:03,218 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 453 transitions. [2021-01-07 05:01:03,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2021-01-07 05:01:03,218 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 453 transitions. [2021-01-07 05:01:03,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-01-07 05:01:03,219 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:03,219 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:03,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:03,433 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:01:03,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:03,433 INFO L82 PathProgramCache]: Analyzing trace with hash 223488613, now seen corresponding path program 7 times [2021-01-07 05:01:03,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:03,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105855031] [2021-01-07 05:01:03,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:03,656 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 6 proven. 62 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:01:03,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105855031] [2021-01-07 05:01:03,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305363471] [2021-01-07 05:01:03,657 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:03,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-07 05:01:03,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:03,984 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 15 proven. 53 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:01:03,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:03,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 23 [2021-01-07 05:01:03,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557830890] [2021-01-07 05:01:03,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-07 05:01:03,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:03,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-07 05:01:03,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:01:03,986 INFO L87 Difference]: Start difference. First operand 403 states and 453 transitions. Second operand 24 states. [2021-01-07 05:01:04,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:04,823 INFO L93 Difference]: Finished difference Result 512 states and 563 transitions. [2021-01-07 05:01:04,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-07 05:01:04,824 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 60 [2021-01-07 05:01:04,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:04,828 INFO L225 Difference]: With dead ends: 512 [2021-01-07 05:01:04,828 INFO L226 Difference]: Without dead ends: 510 [2021-01-07 05:01:04,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=205, Invalid=725, Unknown=0, NotChecked=0, Total=930 [2021-01-07 05:01:04,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-01-07 05:01:04,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 427. [2021-01-07 05:01:04,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2021-01-07 05:01:04,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 480 transitions. [2021-01-07 05:01:04,841 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 480 transitions. Word has length 60 [2021-01-07 05:01:04,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:04,841 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 480 transitions. [2021-01-07 05:01:04,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-01-07 05:01:04,841 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 480 transitions. [2021-01-07 05:01:04,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-07 05:01:04,842 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:04,842 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:05,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:05,058 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:01:05,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:05,059 INFO L82 PathProgramCache]: Analyzing trace with hash 276863736, now seen corresponding path program 4 times [2021-01-07 05:01:05,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:05,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909658210] [2021-01-07 05:01:05,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:05,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909658210] [2021-01-07 05:01:05,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799010612] [2021-01-07 05:01:05,965 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:06,046 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:01:06,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:06,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 46 conjunts are in the unsatisfiable core [2021-01-07 05:01:06,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:06,059 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_31|], 1=[|v_#valid_34|]} [2021-01-07 05:01:06,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:01:06,064 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:01:06,070 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:06,079 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:06,084 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-07 05:01:06,086 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:06,096 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:06,097 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:06,097 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:21 [2021-01-07 05:01:06,347 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-01-07 05:01:06,348 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:06,358 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:06,358 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:06,358 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:26 [2021-01-07 05:01:06,426 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 05:01:06,427 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:06,437 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:06,438 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:01:06,438 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:33 [2021-01-07 05:01:06,962 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-01-07 05:01:06,969 INFO L547 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:01:06,982 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:06,984 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-01-07 05:01:06,984 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:35 [2021-01-07 05:01:09,569 WARN L197 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 44 [2021-01-07 05:01:09,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:01:09,787 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:09,787 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 44 [2021-01-07 05:01:09,789 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:09,812 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:09,818 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 05:01:09,819 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:57, output treesize:8 [2021-01-07 05:01:09,927 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 20 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:01:09,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:09,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 19] total 43 [2021-01-07 05:01:09,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535728494] [2021-01-07 05:01:09,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-01-07 05:01:09,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:09,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-01-07 05:01:09,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1696, Unknown=0, NotChecked=0, Total=1806 [2021-01-07 05:01:09,930 INFO L87 Difference]: Start difference. First operand 427 states and 480 transitions. Second operand 43 states. [2021-01-07 05:01:13,620 WARN L197 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2021-01-07 05:01:14,314 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-01-07 05:01:14,840 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2021-01-07 05:01:17,345 WARN L197 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2021-01-07 05:01:19,598 WARN L197 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2021-01-07 05:01:21,825 WARN L197 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2021-01-07 05:01:26,097 WARN L197 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2021-01-07 05:01:28,371 WARN L197 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2021-01-07 05:01:28,634 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-01-07 05:01:31,033 WARN L197 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2021-01-07 05:01:33,475 WARN L197 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2021-01-07 05:01:33,717 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2021-01-07 05:01:34,089 WARN L197 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2021-01-07 05:01:34,408 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2021-01-07 05:01:36,826 WARN L197 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2021-01-07 05:01:37,035 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-01-07 05:01:37,352 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 77 [2021-01-07 05:01:37,644 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2021-01-07 05:01:42,065 WARN L197 SmtUtils]: Spent 4.32 s on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2021-01-07 05:01:42,690 WARN L197 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2021-01-07 05:01:43,195 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2021-01-07 05:01:43,757 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2021-01-07 05:01:48,527 WARN L197 SmtUtils]: Spent 4.59 s on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2021-01-07 05:01:50,814 WARN L197 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2021-01-07 05:01:51,306 WARN L197 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 76 [2021-01-07 05:01:51,931 WARN L197 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2021-01-07 05:01:52,544 WARN L197 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-01-07 05:01:53,145 WARN L197 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2021-01-07 05:01:57,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:57,625 INFO L93 Difference]: Finished difference Result 784 states and 864 transitions. [2021-01-07 05:01:57,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-01-07 05:01:57,626 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 63 [2021-01-07 05:01:57,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:57,629 INFO L225 Difference]: With dead ends: 784 [2021-01-07 05:01:57,629 INFO L226 Difference]: Without dead ends: 605 [2021-01-07 05:01:57,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1382 ImplicationChecksByTransitivity, 45.3s TimeCoverageRelationStatistics Valid=1147, Invalid=6509, Unknown=0, NotChecked=0, Total=7656 [2021-01-07 05:01:57,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-01-07 05:01:57,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 540. [2021-01-07 05:01:57,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2021-01-07 05:01:57,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 615 transitions. [2021-01-07 05:01:57,648 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 615 transitions. Word has length 63 [2021-01-07 05:01:57,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:57,649 INFO L481 AbstractCegarLoop]: Abstraction has 540 states and 615 transitions. [2021-01-07 05:01:57,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2021-01-07 05:01:57,649 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 615 transitions. [2021-01-07 05:01:57,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-07 05:01:57,650 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:57,650 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:57,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-01-07 05:01:57,866 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:01:57,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:57,867 INFO L82 PathProgramCache]: Analyzing trace with hash 265315897, now seen corresponding path program 8 times [2021-01-07 05:01:57,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:57,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489093761] [2021-01-07 05:01:57,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:58,198 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 17 proven. 76 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:01:58,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489093761] [2021-01-07 05:01:58,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805206705] [2021-01-07 05:01:58,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:58,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:01:58,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:58,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 44 conjunts are in the unsatisfiable core [2021-01-07 05:01:58,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:58,441 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:01:58,442 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:58,449 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:58,450 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:01:58,451 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2021-01-07 05:01:59,101 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:59,102 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 18 treesize of output 18 [2021-01-07 05:01:59,103 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:01:59,119 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:59,121 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:01:59,122 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:01:59,124 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:59,125 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:27 [2021-01-07 05:01:59,191 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:59,398 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 15 proven. 78 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:01:59,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:59,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2021-01-07 05:01:59,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196934052] [2021-01-07 05:01:59,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-01-07 05:01:59,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:59,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-01-07 05:01:59,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1160, Unknown=0, NotChecked=0, Total=1260 [2021-01-07 05:01:59,400 INFO L87 Difference]: Start difference. First operand 540 states and 615 transitions. Second operand 36 states. [2021-01-07 05:02:00,693 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-01-07 05:02:07,141 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-01-07 05:02:07,397 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-01-07 05:02:11,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:11,202 INFO L93 Difference]: Finished difference Result 1186 states and 1298 transitions. [2021-01-07 05:02:11,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-07 05:02:11,203 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 66 [2021-01-07 05:02:11,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:11,208 INFO L225 Difference]: With dead ends: 1186 [2021-01-07 05:02:11,208 INFO L226 Difference]: Without dead ends: 1038 [2021-01-07 05:02:11,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=556, Invalid=3350, Unknown=0, NotChecked=0, Total=3906 [2021-01-07 05:02:11,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2021-01-07 05:02:11,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 775. [2021-01-07 05:02:11,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2021-01-07 05:02:11,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 878 transitions. [2021-01-07 05:02:11,231 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 878 transitions. Word has length 66 [2021-01-07 05:02:11,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:11,232 INFO L481 AbstractCegarLoop]: Abstraction has 775 states and 878 transitions. [2021-01-07 05:02:11,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-01-07 05:02:11,232 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 878 transitions. [2021-01-07 05:02:11,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-07 05:02:11,233 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:11,233 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:02:11,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:02:11,447 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:02:11,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:11,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1668022213, now seen corresponding path program 5 times [2021-01-07 05:02:11,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:11,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011809175] [2021-01-07 05:02:11,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:11,629 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:02:11,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011809175] [2021-01-07 05:02:11,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363912253] [2021-01-07 05:02:11,630 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 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 05:02:11,738 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-01-07 05:02:11,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:02:11,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-07 05:02:11,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:02:11,753 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_32|], 1=[|v_#valid_35|]} [2021-01-07 05:02:11,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:02:11,759 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 05:02:11,760 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:11,774 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:11,780 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-07 05:02:11,782 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:11,794 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:11,797 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 05:02:11,798 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2021-01-07 05:02:12,135 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:02:12,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:12,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-01-07 05:02:12,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695890974] [2021-01-07 05:02:12,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-07 05:02:12,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:12,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-07 05:02:12,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:02:12,137 INFO L87 Difference]: Start difference. First operand 775 states and 878 transitions. Second operand 20 states. [2021-01-07 05:02:13,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:13,091 INFO L93 Difference]: Finished difference Result 1159 states and 1288 transitions. [2021-01-07 05:02:13,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:02:13,093 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2021-01-07 05:02:13,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:13,098 INFO L225 Difference]: With dead ends: 1159 [2021-01-07 05:02:13,098 INFO L226 Difference]: Without dead ends: 1159 [2021-01-07 05:02:13,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2021-01-07 05:02:13,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2021-01-07 05:02:13,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 938. [2021-01-07 05:02:13,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 938 states. [2021-01-07 05:02:13,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1061 transitions. [2021-01-07 05:02:13,123 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1061 transitions. Word has length 67 [2021-01-07 05:02:13,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:13,124 INFO L481 AbstractCegarLoop]: Abstraction has 938 states and 1061 transitions. [2021-01-07 05:02:13,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-07 05:02:13,124 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1061 transitions. [2021-01-07 05:02:13,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-07 05:02:13,125 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:13,125 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:02:13,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-01-07 05:02:13,341 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:02:13,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:13,342 INFO L82 PathProgramCache]: Analyzing trace with hash 2092129770, now seen corresponding path program 9 times [2021-01-07 05:02:13,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:13,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986430454] [2021-01-07 05:02:13,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 21 proven. 120 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:02:13,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986430454] [2021-01-07 05:02:13,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742669494] [2021-01-07 05:02:13,726 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 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 05:02:13,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-07 05:02:13,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:02:13,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 52 conjunts are in the unsatisfiable core [2021-01-07 05:02:13,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:02:14,173 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 05:02:14,174 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:14,180 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:14,182 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:02:14,182 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:02:14,565 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 21 proven. 120 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:02:14,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:14,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 34 [2021-01-07 05:02:14,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085054309] [2021-01-07 05:02:14,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-01-07 05:02:14,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:14,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-01-07 05:02:14,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1030, Unknown=0, NotChecked=0, Total=1122 [2021-01-07 05:02:14,567 INFO L87 Difference]: Start difference. First operand 938 states and 1061 transitions. Second operand 34 states. [2021-01-07 05:02:16,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:16,947 INFO L93 Difference]: Finished difference Result 1644 states and 1813 transitions. [2021-01-07 05:02:16,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-07 05:02:16,948 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 76 [2021-01-07 05:02:16,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:16,955 INFO L225 Difference]: With dead ends: 1644 [2021-01-07 05:02:16,955 INFO L226 Difference]: Without dead ends: 1566 [2021-01-07 05:02:16,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=266, Invalid=1896, Unknown=0, NotChecked=0, Total=2162 [2021-01-07 05:02:16,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2021-01-07 05:02:16,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1372. [2021-01-07 05:02:16,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1372 states. [2021-01-07 05:02:16,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 1542 transitions. [2021-01-07 05:02:16,986 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 1542 transitions. Word has length 76 [2021-01-07 05:02:16,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:16,986 INFO L481 AbstractCegarLoop]: Abstraction has 1372 states and 1542 transitions. [2021-01-07 05:02:16,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2021-01-07 05:02:16,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 1542 transitions. [2021-01-07 05:02:16,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-07 05:02:16,988 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:16,989 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:02:17,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:02:17,202 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:02:17,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:17,203 INFO L82 PathProgramCache]: Analyzing trace with hash -882077113, now seen corresponding path program 10 times [2021-01-07 05:02:17,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:17,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279199854] [2021-01-07 05:02:17,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:17,594 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 28 proven. 134 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:02:17,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279199854] [2021-01-07 05:02:17,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584130365] [2021-01-07 05:02:17,594 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 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 05:02:17,683 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:02:17,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:02:17,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 54 conjunts are in the unsatisfiable core [2021-01-07 05:02:17,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:02:17,710 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:17,710 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 05:02:17,714 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:17,737 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:02:17,739 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 05:02:17,739 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:02:17,868 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 05:02:17,869 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:17,878 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:17,882 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:17,882 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2021-01-07 05:02:18,405 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:18,406 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-01-07 05:02:18,412 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:02:18,425 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:18,426 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:18,427 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:24 [2021-01-07 05:02:18,489 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:02:18,726 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 50 proven. 112 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:02:18,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:18,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22] total 33 [2021-01-07 05:02:18,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486370172] [2021-01-07 05:02:18,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-01-07 05:02:18,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:18,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-01-07 05:02:18,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1025, Unknown=0, NotChecked=0, Total=1122 [2021-01-07 05:02:18,728 INFO L87 Difference]: Start difference. First operand 1372 states and 1542 transitions. Second operand 34 states. [2021-01-07 05:02:23,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:23,686 INFO L93 Difference]: Finished difference Result 1964 states and 2158 transitions. [2021-01-07 05:02:23,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-07 05:02:23,687 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 80 [2021-01-07 05:02:23,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:23,695 INFO L225 Difference]: With dead ends: 1964 [2021-01-07 05:02:23,695 INFO L226 Difference]: Without dead ends: 1772 [2021-01-07 05:02:23,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=539, Invalid=2653, Unknown=0, NotChecked=0, Total=3192 [2021-01-07 05:02:23,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2021-01-07 05:02:23,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1033. [2021-01-07 05:02:23,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1033 states. [2021-01-07 05:02:23,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1167 transitions. [2021-01-07 05:02:23,728 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1167 transitions. Word has length 80 [2021-01-07 05:02:23,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:23,729 INFO L481 AbstractCegarLoop]: Abstraction has 1033 states and 1167 transitions. [2021-01-07 05:02:23,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2021-01-07 05:02:23,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1167 transitions. [2021-01-07 05:02:23,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-07 05:02:23,731 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:23,731 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:02:23,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-01-07 05:02:23,944 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:02:23,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:23,945 INFO L82 PathProgramCache]: Analyzing trace with hash 2132340658, now seen corresponding path program 6 times [2021-01-07 05:02:23,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:23,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511832366] [2021-01-07 05:02:23,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 7 proven. 90 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:02:24,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511832366] [2021-01-07 05:02:24,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234856697] [2021-01-07 05:02:24,581 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:02:24,694 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-07 05:02:24,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:02:24,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 55 conjunts are in the unsatisfiable core [2021-01-07 05:02:24,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:02:24,707 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-07 05:02:24,709 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:24,714 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:24,715 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:24,715 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-07 05:02:25,039 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:02:25,040 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:25,050 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:25,051 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:02:25,052 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2021-01-07 05:02:25,135 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-01-07 05:02:25,136 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:25,147 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:25,148 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-01-07 05:02:25,149 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:35, output treesize:31 [2021-01-07 05:02:27,161 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-01-07 05:02:27,162 INFO L348 Elim1Store]: treesize reduction 10, result has 89.0 percent of original size [2021-01-07 05:02:27,162 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 53 treesize of output 101 [2021-01-07 05:02:27,166 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:02:27,166 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:02:27,172 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:27,238 INFO L625 ElimStorePlain]: treesize reduction 17, result has 73.8 percent of original size [2021-01-07 05:02:27,242 INFO L547 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:27,243 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:63, output treesize:8 [2021-01-07 05:02:27,370 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 19 proven. 78 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:02:27,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:27,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 43 [2021-01-07 05:02:27,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643413596] [2021-01-07 05:02:27,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-01-07 05:02:27,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:27,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-01-07 05:02:27,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1701, Unknown=0, NotChecked=0, Total=1806 [2021-01-07 05:02:27,372 INFO L87 Difference]: Start difference. First operand 1033 states and 1167 transitions. Second operand 43 states. [2021-01-07 05:02:33,210 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 60 DAG size of output: 38 [2021-01-07 05:02:37,509 WARN L197 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2021-01-07 05:02:41,872 WARN L197 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 69 DAG size of output: 47 [2021-01-07 05:02:46,288 WARN L197 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2021-01-07 05:02:50,577 WARN L197 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2021-01-07 05:02:55,137 WARN L197 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2021-01-07 05:02:59,396 WARN L197 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2021-01-07 05:03:01,683 WARN L197 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2021-01-07 05:03:04,051 WARN L197 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2021-01-07 05:03:06,542 WARN L197 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2021-01-07 05:03:10,808 WARN L197 SmtUtils]: Spent 4.15 s on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2021-01-07 05:03:11,699 WARN L197 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2021-01-07 05:03:12,067 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-01-07 05:03:16,293 WARN L197 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2021-01-07 05:03:19,925 WARN L197 SmtUtils]: Spent 3.47 s on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2021-01-07 05:03:22,435 WARN L197 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2021-01-07 05:03:23,966 WARN L197 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2021-01-07 05:03:28,301 WARN L197 SmtUtils]: Spent 4.20 s on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2021-01-07 05:03:32,709 WARN L197 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2021-01-07 05:03:37,037 WARN L197 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2021-01-07 05:03:41,341 WARN L197 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2021-01-07 05:03:41,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:03:41,598 INFO L93 Difference]: Finished difference Result 1924 states and 2122 transitions. [2021-01-07 05:03:41,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-01-07 05:03:41,599 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 80 [2021-01-07 05:03:41,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:03:41,604 INFO L225 Difference]: With dead ends: 1924 [2021-01-07 05:03:41,604 INFO L226 Difference]: Without dead ends: 1382 [2021-01-07 05:03:41,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 72.8s TimeCoverageRelationStatistics Valid=557, Invalid=4993, Unknown=0, NotChecked=0, Total=5550 [2021-01-07 05:03:41,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-01-07 05:03:41,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1037. [2021-01-07 05:03:41,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2021-01-07 05:03:41,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1172 transitions. [2021-01-07 05:03:41,629 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1172 transitions. Word has length 80 [2021-01-07 05:03:41,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:03:41,629 INFO L481 AbstractCegarLoop]: Abstraction has 1037 states and 1172 transitions. [2021-01-07 05:03:41,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2021-01-07 05:03:41,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1172 transitions. [2021-01-07 05:03:41,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-01-07 05:03:41,631 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:03:41,631 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:03:41,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-01-07 05:03:41,833 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:03:41,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:03:41,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1003116751, now seen corresponding path program 7 times [2021-01-07 05:03:41,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:03:41,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777312646] [2021-01-07 05:03:41,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:03:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:03:42,104 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 6 proven. 104 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:03:42,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777312646] [2021-01-07 05:03:42,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103979810] [2021-01-07 05:03:42,104 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:03:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:03:42,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 41 conjunts are in the unsatisfiable core [2021-01-07 05:03:42,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:03:42,212 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_34|], 1=[|v_#valid_37|]} [2021-01-07 05:03:42,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:03:42,223 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 05:03:42,223 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:42,235 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:42,240 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 10 treesize of output 8 [2021-01-07 05:03:42,242 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:42,254 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:42,256 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 05:03:42,256 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2021-01-07 05:03:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 15 proven. 95 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:03:42,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:03:42,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-01-07 05:03:42,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991682560] [2021-01-07 05:03:42,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-07 05:03:42,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:03:42,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-07 05:03:42,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:03:42,759 INFO L87 Difference]: Start difference. First operand 1037 states and 1172 transitions. Second operand 23 states. [2021-01-07 05:03:44,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:03:44,086 INFO L93 Difference]: Finished difference Result 1666 states and 1854 transitions. [2021-01-07 05:03:44,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-07 05:03:44,091 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 84 [2021-01-07 05:03:44,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:03:44,097 INFO L225 Difference]: With dead ends: 1666 [2021-01-07 05:03:44,098 INFO L226 Difference]: Without dead ends: 1666 [2021-01-07 05:03:44,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=191, Invalid=865, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 05:03:44,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2021-01-07 05:03:44,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1218. [2021-01-07 05:03:44,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1218 states. [2021-01-07 05:03:44,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1375 transitions. [2021-01-07 05:03:44,124 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1375 transitions. Word has length 84 [2021-01-07 05:03:44,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:03:44,124 INFO L481 AbstractCegarLoop]: Abstraction has 1218 states and 1375 transitions. [2021-01-07 05:03:44,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-07 05:03:44,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1375 transitions. [2021-01-07 05:03:44,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-07 05:03:44,126 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:03:44,126 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:03:44,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-01-07 05:03:44,340 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:03:44,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:03:44,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1484661605, now seen corresponding path program 11 times [2021-01-07 05:03:44,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:03:44,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714643056] [2021-01-07 05:03:44,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:03:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:03:44,882 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 25 proven. 174 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:03:44,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714643056] [2021-01-07 05:03:44,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545145637] [2021-01-07 05:03:44,883 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:03:45,016 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-01-07 05:03:45,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:03:45,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 58 conjunts are in the unsatisfiable core [2021-01-07 05:03:45,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:03:45,393 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 05:03:45,395 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:45,404 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:45,405 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:03:45,406 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:03:45,834 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-01-07 05:03:45,835 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:45,837 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:45,837 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:45,838 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 05:03:45,866 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 25 proven. 174 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:03:45,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:03:45,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 35 [2021-01-07 05:03:45,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199886834] [2021-01-07 05:03:45,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-01-07 05:03:45,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:03:45,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-01-07 05:03:45,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1098, Unknown=0, NotChecked=0, Total=1190 [2021-01-07 05:03:45,868 INFO L87 Difference]: Start difference. First operand 1218 states and 1375 transitions. Second operand 35 states. [2021-01-07 05:03:49,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:03:49,231 INFO L93 Difference]: Finished difference Result 1810 states and 1994 transitions. [2021-01-07 05:03:49,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-07 05:03:49,232 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 86 [2021-01-07 05:03:49,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:03:49,236 INFO L225 Difference]: With dead ends: 1810 [2021-01-07 05:03:49,236 INFO L226 Difference]: Without dead ends: 1602 [2021-01-07 05:03:49,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=278, Invalid=2074, Unknown=0, NotChecked=0, Total=2352 [2021-01-07 05:03:49,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2021-01-07 05:03:49,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1451. [2021-01-07 05:03:49,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1451 states. [2021-01-07 05:03:49,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 1636 transitions. [2021-01-07 05:03:49,264 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 1636 transitions. Word has length 86 [2021-01-07 05:03:49,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:03:49,264 INFO L481 AbstractCegarLoop]: Abstraction has 1451 states and 1636 transitions. [2021-01-07 05:03:49,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2021-01-07 05:03:49,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 1636 transitions. [2021-01-07 05:03:49,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-01-07 05:03:49,266 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:03:49,266 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:03:49,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-01-07 05:03:49,482 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:03:49,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:03:49,483 INFO L82 PathProgramCache]: Analyzing trace with hash 777978040, now seen corresponding path program 12 times [2021-01-07 05:03:49,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:03:49,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721162612] [2021-01-07 05:03:49,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:03:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:03:50,137 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 45 proven. 179 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:03:50,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721162612] [2021-01-07 05:03:50,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878076327] [2021-01-07 05:03:50,138 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:03:50,416 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-01-07 05:03:50,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:03:50,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 39 conjunts are in the unsatisfiable core [2021-01-07 05:03:50,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:03:50,453 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:50,454 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 05:03:50,455 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:50,487 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:03:50,491 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:50,491 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:03:50,552 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 05:03:50,554 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:50,558 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:50,559 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:50,559 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-07 05:03:50,944 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:50,945 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 20 treesize of output 20 [2021-01-07 05:03:50,946 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:03:50,948 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:50,956 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:50,957 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:50,957 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:19 [2021-01-07 05:03:51,087 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 18 proven. 19 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2021-01-07 05:03:51,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:03:51,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 10] total 28 [2021-01-07 05:03:51,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113831004] [2021-01-07 05:03:51,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-01-07 05:03:51,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:03:51,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-01-07 05:03:51,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2021-01-07 05:03:51,089 INFO L87 Difference]: Start difference. First operand 1451 states and 1636 transitions. Second operand 29 states. [2021-01-07 05:03:55,001 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2021-01-07 05:03:57,119 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2021-01-07 05:03:59,272 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-01-07 05:04:02,519 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-01-07 05:04:04,714 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-01-07 05:04:05,657 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-01-07 05:04:06,603 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-01-07 05:04:07,533 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-01-07 05:04:08,508 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2021-01-07 05:04:09,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:09,483 INFO L93 Difference]: Finished difference Result 1838 states and 1989 transitions. [2021-01-07 05:04:09,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2021-01-07 05:04:09,486 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 90 [2021-01-07 05:04:09,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:09,492 INFO L225 Difference]: With dead ends: 1838 [2021-01-07 05:04:09,492 INFO L226 Difference]: Without dead ends: 1535 [2021-01-07 05:04:09,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6267 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=6075, Invalid=20657, Unknown=0, NotChecked=0, Total=26732 [2021-01-07 05:04:09,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2021-01-07 05:04:09,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1001. [2021-01-07 05:04:09,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2021-01-07 05:04:09,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1101 transitions. [2021-01-07 05:04:09,530 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1101 transitions. Word has length 90 [2021-01-07 05:04:09,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:09,530 INFO L481 AbstractCegarLoop]: Abstraction has 1001 states and 1101 transitions. [2021-01-07 05:04:09,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-01-07 05:04:09,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1101 transitions. [2021-01-07 05:04:09,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-01-07 05:04:09,532 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:09,532 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:09,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-01-07 05:04:09,747 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:09,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:09,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1725290594, now seen corresponding path program 8 times [2021-01-07 05:04:09,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:09,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075972762] [2021-01-07 05:04:09,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:10,676 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 9 proven. 154 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:04:10,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075972762] [2021-01-07 05:04:10,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780610130] [2021-01-07 05:04:10,677 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:10,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:04:10,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:04:10,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 61 conjunts are in the unsatisfiable core [2021-01-07 05:04:10,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:10,827 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 05:04:10,830 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:10,838 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:10,840 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:10,840 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-07 05:04:11,345 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:04:11,346 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:11,360 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:11,363 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 05:04:11,363 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2021-01-07 05:04:11,471 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-01-07 05:04:11,472 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:11,489 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:11,492 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-01-07 05:04:11,492 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:38, output treesize:34 [2021-01-07 05:04:13,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:04:13,926 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:13,927 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 47 [2021-01-07 05:04:13,930 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:13,974 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:13,980 INFO L547 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:13,981 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 10 variables, input treesize:64, output treesize:8 [2021-01-07 05:04:14,165 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 9 proven. 154 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:04:14,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:14,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 46 [2021-01-07 05:04:14,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498641814] [2021-01-07 05:04:14,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-01-07 05:04:14,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:14,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-01-07 05:04:14,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1961, Unknown=0, NotChecked=0, Total=2070 [2021-01-07 05:04:14,167 INFO L87 Difference]: Start difference. First operand 1001 states and 1101 transitions. Second operand 46 states. [2021-01-07 05:04:16,524 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2021-01-07 05:04:16,815 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2021-01-07 05:04:17,114 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2021-01-07 05:04:17,414 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2021-01-07 05:04:17,901 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2021-01-07 05:04:18,260 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2021-01-07 05:04:18,556 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2021-01-07 05:04:19,179 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2021-01-07 05:04:19,534 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2021-01-07 05:04:20,489 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2021-01-07 05:04:20,859 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2021-01-07 05:04:21,203 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2021-01-07 05:04:23,564 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2021-01-07 05:04:23,905 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-01-07 05:04:26,888 WARN L197 SmtUtils]: Spent 2.80 s on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2021-01-07 05:04:30,403 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2021-01-07 05:04:30,786 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2021-01-07 05:04:31,065 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2021-01-07 05:04:33,397 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2021-01-07 05:04:33,663 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54