/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-memsafety/openbsd_cstrncmp-alloca-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:04:27,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:04:27,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:04:27,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:04:27,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:04:27,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:04:27,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:04:27,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:04:27,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:04:27,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:04:27,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:04:27,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:04:27,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:04:27,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:04:27,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:04:27,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:04:27,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:04:27,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:04:27,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:04:27,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:04:27,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:04:27,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:04:27,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:04:27,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:04:27,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:04:27,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:04:27,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:04:27,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:04:27,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:04:27,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:04:27,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:04:27,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:04:27,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:04:27,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:04:27,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:04:27,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:04:27,923 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-01-07 05:04:27,976 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:04:27,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:04:27,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:04:27,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:04:27,979 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:04:27,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:04:27,979 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:04:27,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:04:27,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:04:27,980 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:04:27,980 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:04:27,981 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:04:27,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:04:27,981 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:04:27,981 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:04:27,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:04:27,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:04:27,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:04:27,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:04:27,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:04:27,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:04:27,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:04:27,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:04:27,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:04:27,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:04:28,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:04:28,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:04:28,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:04:28,458 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:04:28,458 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:04:28,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstrncmp-alloca-2.i [2021-01-07 05:04:28,567 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d1dc0e4bc/dd8a66a2900844ef9d866e103fb6c903/FLAG689e85ed5 [2021-01-07 05:04:29,364 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:04:29,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrncmp-alloca-2.i [2021-01-07 05:04:29,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d1dc0e4bc/dd8a66a2900844ef9d866e103fb6c903/FLAG689e85ed5 [2021-01-07 05:04:29,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d1dc0e4bc/dd8a66a2900844ef9d866e103fb6c903 [2021-01-07 05:04:29,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:04:29,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:04:29,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:04:29,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:04:29,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:04:29,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:04:29" (1/1) ... [2021-01-07 05:04:29,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f4dc621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:29, skipping insertion in model container [2021-01-07 05:04:29,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:04:29" (1/1) ... [2021-01-07 05:04:29,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:04:29,724 INFO L178 MainTranslator]: Built tables and reachable declarations 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 05:04:30,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:04:30,141 INFO L203 MainTranslator]: Completed pre-run 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 05:04:30,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:04:30,274 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:04:30,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30 WrapperNode [2021-01-07 05:04:30,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:04:30,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:04:30,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:04:30,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:04:30,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30" (1/1) ... [2021-01-07 05:04:30,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30" (1/1) ... [2021-01-07 05:04:30,331 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:04:30,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:04:30,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:04:30,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:04:30,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30" (1/1) ... [2021-01-07 05:04:30,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30" (1/1) ... [2021-01-07 05:04:30,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30" (1/1) ... [2021-01-07 05:04:30,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30" (1/1) ... [2021-01-07 05:04:30,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30" (1/1) ... [2021-01-07 05:04:30,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30" (1/1) ... [2021-01-07 05:04:30,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30" (1/1) ... [2021-01-07 05:04:30,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:04:30,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:04:30,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:04:30,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:04:30,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:04:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:04:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:04:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:04:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:04:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:04:30,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:04:30,997 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:04:30,997 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-01-07 05:04:30,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:04:30 BoogieIcfgContainer [2021-01-07 05:04:31,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:04:31,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:04:31,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:04:31,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:04:31,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:04:29" (1/3) ... [2021-01-07 05:04:31,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ac20dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:04:31, skipping insertion in model container [2021-01-07 05:04:31,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:30" (2/3) ... [2021-01-07 05:04:31,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ac20dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:04:31, skipping insertion in model container [2021-01-07 05:04:31,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:04:30" (3/3) ... [2021-01-07 05:04:31,011 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cstrncmp-alloca-2.i [2021-01-07 05:04:31,019 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:04:31,025 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2021-01-07 05:04:31,049 INFO L253 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-01-07 05:04:31,077 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:04:31,078 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:04:31,078 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:04:31,078 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:04:31,078 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:04:31,079 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:04:31,079 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:04:31,079 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:04:31,099 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2021-01-07 05:04:31,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:04:31,108 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:31,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:31,110 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 05:04:31,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:31,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2021-01-07 05:04:31,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:31,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458302522] [2021-01-07 05:04:31,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:31,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:31,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458302522] [2021-01-07 05:04:31,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:31,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:04:31,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542103298] [2021-01-07 05:04:31,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:04:31,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:31,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:04:31,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:04:31,409 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2021-01-07 05:04:31,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:31,469 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2021-01-07 05:04:31,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:04:31,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-01-07 05:04:31,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:31,484 INFO L225 Difference]: With dead ends: 100 [2021-01-07 05:04:31,484 INFO L226 Difference]: Without dead ends: 96 [2021-01-07 05:04:31,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:04:31,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-01-07 05:04:31,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 55. [2021-01-07 05:04:31,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-07 05:04:31,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-01-07 05:04:31,534 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 7 [2021-01-07 05:04:31,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:31,535 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-01-07 05:04:31,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:04:31,535 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2021-01-07 05:04:31,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:04:31,535 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:31,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:31,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:04:31,536 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 05:04:31,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:31,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1806876138, now seen corresponding path program 1 times [2021-01-07 05:04:31,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:31,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527535904] [2021-01-07 05:04:31,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:31,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:31,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527535904] [2021-01-07 05:04:31,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:31,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:04:31,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64948489] [2021-01-07 05:04:31,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:04:31,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:31,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:04:31,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:04:31,602 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 3 states. [2021-01-07 05:04:31,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:31,660 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2021-01-07 05:04:31,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:04:31,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-01-07 05:04:31,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:31,662 INFO L225 Difference]: With dead ends: 53 [2021-01-07 05:04:31,663 INFO L226 Difference]: Without dead ends: 53 [2021-01-07 05:04:31,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:04:31,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-01-07 05:04:31,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-01-07 05:04:31,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-07 05:04:31,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-01-07 05:04:31,670 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 7 [2021-01-07 05:04:31,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:31,671 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-01-07 05:04:31,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:04:31,671 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-01-07 05:04:31,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:04:31,672 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:31,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:31,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:04:31,672 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 05:04:31,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:31,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2021-01-07 05:04:31,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:31,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502622378] [2021-01-07 05:04:31,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:31,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502622378] [2021-01-07 05:04:31,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:31,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:04:31,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109316988] [2021-01-07 05:04:31,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:04:31,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:31,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:04:31,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:04:31,757 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 4 states. [2021-01-07 05:04:31,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:31,899 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2021-01-07 05:04:31,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:04:31,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-01-07 05:04:31,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:31,901 INFO L225 Difference]: With dead ends: 97 [2021-01-07 05:04:31,901 INFO L226 Difference]: Without dead ends: 97 [2021-01-07 05:04:31,902 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 05:04:31,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-01-07 05:04:31,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 55. [2021-01-07 05:04:31,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-07 05:04:31,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2021-01-07 05:04:31,910 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 7 [2021-01-07 05:04:31,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:31,910 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2021-01-07 05:04:31,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:04:31,910 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2021-01-07 05:04:31,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:04:31,911 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:31,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:31,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-07 05:04:31,912 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 05:04:31,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:31,913 INFO L82 PathProgramCache]: Analyzing trace with hash -533876960, now seen corresponding path program 1 times [2021-01-07 05:04:31,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:31,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191381935] [2021-01-07 05:04:31,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:32,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:32,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191381935] [2021-01-07 05:04:32,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:32,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:04:32,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506960049] [2021-01-07 05:04:32,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:04:32,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:32,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:04:32,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:04:32,016 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 4 states. [2021-01-07 05:04:32,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:32,083 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2021-01-07 05:04:32,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:04:32,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-07 05:04:32,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:32,087 INFO L225 Difference]: With dead ends: 54 [2021-01-07 05:04:32,088 INFO L226 Difference]: Without dead ends: 54 [2021-01-07 05:04:32,090 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 05:04:32,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-07 05:04:32,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-01-07 05:04:32,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-07 05:04:32,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2021-01-07 05:04:32,112 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 9 [2021-01-07 05:04:32,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:32,112 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2021-01-07 05:04:32,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:04:32,113 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2021-01-07 05:04:32,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:04:32,116 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:32,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:32,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-07 05:04:32,118 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 05:04:32,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:32,120 INFO L82 PathProgramCache]: Analyzing trace with hash -533876908, now seen corresponding path program 1 times [2021-01-07 05:04:32,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:32,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536483530] [2021-01-07 05:04:32,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:32,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:32,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536483530] [2021-01-07 05:04:32,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:32,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:04:32,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181543911] [2021-01-07 05:04:32,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:04:32,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:32,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:04:32,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:04:32,217 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 4 states. [2021-01-07 05:04:32,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:32,269 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2021-01-07 05:04:32,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:04:32,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-07 05:04:32,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:32,275 INFO L225 Difference]: With dead ends: 98 [2021-01-07 05:04:32,278 INFO L226 Difference]: Without dead ends: 98 [2021-01-07 05:04:32,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:04:32,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-01-07 05:04:32,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 65. [2021-01-07 05:04:32,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-07 05:04:32,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2021-01-07 05:04:32,290 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 9 [2021-01-07 05:04:32,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:32,290 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2021-01-07 05:04:32,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:04:32,290 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2021-01-07 05:04:32,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:04:32,293 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:32,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:32,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-07 05:04:32,294 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 05:04:32,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:32,295 INFO L82 PathProgramCache]: Analyzing trace with hash -476618606, now seen corresponding path program 1 times [2021-01-07 05:04:32,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:32,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504661100] [2021-01-07 05:04:32,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:32,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:32,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504661100] [2021-01-07 05:04:32,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:32,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:04:32,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449053913] [2021-01-07 05:04:32,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:04:32,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:32,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:04:32,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:04:32,352 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand 3 states. [2021-01-07 05:04:32,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:32,395 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2021-01-07 05:04:32,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:04:32,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2021-01-07 05:04:32,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:32,397 INFO L225 Difference]: With dead ends: 63 [2021-01-07 05:04:32,397 INFO L226 Difference]: Without dead ends: 63 [2021-01-07 05:04:32,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:04:32,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-01-07 05:04:32,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-01-07 05:04:32,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-01-07 05:04:32,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2021-01-07 05:04:32,411 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 9 [2021-01-07 05:04:32,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:32,411 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2021-01-07 05:04:32,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:04:32,411 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2021-01-07 05:04:32,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:04:32,413 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:32,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:32,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-07 05:04:32,413 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 05:04:32,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:32,415 INFO L82 PathProgramCache]: Analyzing trace with hash -476618605, now seen corresponding path program 1 times [2021-01-07 05:04:32,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:32,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751494824] [2021-01-07 05:04:32,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:32,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:32,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751494824] [2021-01-07 05:04:32,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:32,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:04:32,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200131812] [2021-01-07 05:04:32,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:04:32,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:32,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:04:32,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:04:32,526 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand 5 states. [2021-01-07 05:04:32,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:32,636 INFO L93 Difference]: Finished difference Result 98 states and 114 transitions. [2021-01-07 05:04:32,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:04:32,637 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2021-01-07 05:04:32,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:32,638 INFO L225 Difference]: With dead ends: 98 [2021-01-07 05:04:32,638 INFO L226 Difference]: Without dead ends: 98 [2021-01-07 05:04:32,638 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 05:04:32,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-01-07 05:04:32,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 65. [2021-01-07 05:04:32,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-07 05:04:32,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2021-01-07 05:04:32,644 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 9 [2021-01-07 05:04:32,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:32,644 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2021-01-07 05:04:32,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:04:32,644 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2021-01-07 05:04:32,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-07 05:04:32,645 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:32,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:32,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-07 05:04:32,646 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 05:04:32,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:32,647 INFO L82 PathProgramCache]: Analyzing trace with hash 629683418, now seen corresponding path program 1 times [2021-01-07 05:04:32,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:32,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382644582] [2021-01-07 05:04:32,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:32,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382644582] [2021-01-07 05:04:32,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:32,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:04:32,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472242122] [2021-01-07 05:04:32,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:04:32,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:32,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:04:32,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:04:32,694 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand 4 states. [2021-01-07 05:04:32,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:32,732 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2021-01-07 05:04:32,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:04:32,733 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-01-07 05:04:32,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:32,734 INFO L225 Difference]: With dead ends: 64 [2021-01-07 05:04:32,734 INFO L226 Difference]: Without dead ends: 64 [2021-01-07 05:04:32,734 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 05:04:32,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-01-07 05:04:32,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-01-07 05:04:32,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-01-07 05:04:32,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions. [2021-01-07 05:04:32,741 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 10 [2021-01-07 05:04:32,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:32,741 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions. [2021-01-07 05:04:32,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:04:32,742 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2021-01-07 05:04:32,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-07 05:04:32,742 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:32,743 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:32,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-07 05:04:32,744 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 05:04:32,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:32,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2021-01-07 05:04:32,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:32,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686389205] [2021-01-07 05:04:32,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:32,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:32,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686389205] [2021-01-07 05:04:32,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212144783] [2021-01-07 05:04:32,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:32,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-07 05:04:32,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:33,028 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_22|], 1=[|v_#valid_30|]} [2021-01-07 05:04:33,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:04:33,049 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:04:33,051 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:33,061 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:33,070 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-07 05:04:33,078 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:33,087 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:33,091 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:33,091 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2021-01-07 05:04:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:33,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:33,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-01-07 05:04:33,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554151291] [2021-01-07 05:04:33,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:04:33,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:33,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:04:33,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:04:33,129 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand 6 states. [2021-01-07 05:04:33,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:33,259 INFO L93 Difference]: Finished difference Result 107 states and 124 transitions. [2021-01-07 05:04:33,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:04:33,260 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-01-07 05:04:33,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:33,260 INFO L225 Difference]: With dead ends: 107 [2021-01-07 05:04:33,261 INFO L226 Difference]: Without dead ends: 107 [2021-01-07 05:04:33,262 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 05:04:33,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-01-07 05:04:33,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 59. [2021-01-07 05:04:33,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-01-07 05:04:33,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2021-01-07 05:04:33,277 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 11 [2021-01-07 05:04:33,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:33,281 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2021-01-07 05:04:33,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:04:33,282 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2021-01-07 05:04:33,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-07 05:04:33,282 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:33,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:33,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-07 05:04:33,501 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 05:04:33,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:33,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1518446106, now seen corresponding path program 1 times [2021-01-07 05:04:33,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:33,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929540776] [2021-01-07 05:04:33,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:33,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:33,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929540776] [2021-01-07 05:04:33,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:33,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:04:33,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126958756] [2021-01-07 05:04:33,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:04:33,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:33,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:04:33,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:04:33,542 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 4 states. [2021-01-07 05:04:33,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:33,591 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2021-01-07 05:04:33,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:04:33,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-01-07 05:04:33,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:33,593 INFO L225 Difference]: With dead ends: 57 [2021-01-07 05:04:33,593 INFO L226 Difference]: Without dead ends: 57 [2021-01-07 05:04:33,594 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 05:04:33,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-01-07 05:04:33,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-01-07 05:04:33,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-01-07 05:04:33,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2021-01-07 05:04:33,612 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 13 [2021-01-07 05:04:33,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:33,613 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2021-01-07 05:04:33,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:04:33,613 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2021-01-07 05:04:33,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-07 05:04:33,614 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:33,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:33,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-07 05:04:33,615 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 05:04:33,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:33,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1518446105, now seen corresponding path program 1 times [2021-01-07 05:04:33,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:33,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84598805] [2021-01-07 05:04:33,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:33,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:33,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84598805] [2021-01-07 05:04:33,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:33,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:04:33,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013895284] [2021-01-07 05:04:33,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:04:33,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:33,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:04:33,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:04:33,738 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 6 states. [2021-01-07 05:04:33,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:33,821 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2021-01-07 05:04:33,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:04:33,821 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2021-01-07 05:04:33,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:33,822 INFO L225 Difference]: With dead ends: 72 [2021-01-07 05:04:33,822 INFO L226 Difference]: Without dead ends: 72 [2021-01-07 05:04:33,823 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 05:04:33,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-01-07 05:04:33,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2021-01-07 05:04:33,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-01-07 05:04:33,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2021-01-07 05:04:33,825 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 13 [2021-01-07 05:04:33,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:33,826 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2021-01-07 05:04:33,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:04:33,826 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2021-01-07 05:04:33,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-07 05:04:33,826 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:33,827 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:33,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-07 05:04:33,827 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 05:04:33,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:33,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1862804906, now seen corresponding path program 1 times [2021-01-07 05:04:33,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:33,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070398137] [2021-01-07 05:04:33,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:33,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:33,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070398137] [2021-01-07 05:04:33,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897811931] [2021-01-07 05:04:33,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:33,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-07 05:04:33,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:34,001 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:34,001 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:04:34,008 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:34,037 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:04:34,040 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:34,040 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:04:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:34,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:34,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-01-07 05:04:34,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131978466] [2021-01-07 05:04:34,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:04:34,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:34,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:04:34,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:04:34,097 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand 7 states. [2021-01-07 05:04:34,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:34,227 INFO L93 Difference]: Finished difference Result 96 states and 115 transitions. [2021-01-07 05:04:34,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:04:34,228 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2021-01-07 05:04:34,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:34,229 INFO L225 Difference]: With dead ends: 96 [2021-01-07 05:04:34,229 INFO L226 Difference]: Without dead ends: 96 [2021-01-07 05:04:34,229 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 05:04:34,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-01-07 05:04:34,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 59. [2021-01-07 05:04:34,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-01-07 05:04:34,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2021-01-07 05:04:34,232 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 13 [2021-01-07 05:04:34,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:34,232 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2021-01-07 05:04:34,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:04:34,232 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2021-01-07 05:04:34,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-07 05:04:34,233 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:34,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:34,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-07 05:04:34,448 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 05:04:34,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:34,449 INFO L82 PathProgramCache]: Analyzing trace with hash 172810365, now seen corresponding path program 1 times [2021-01-07 05:04:34,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:34,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605864077] [2021-01-07 05:04:34,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:34,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:34,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605864077] [2021-01-07 05:04:34,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:34,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:04:34,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622523263] [2021-01-07 05:04:34,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:04:34,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:34,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:04:34,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:04:34,524 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand 4 states. [2021-01-07 05:04:34,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:34,552 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2021-01-07 05:04:34,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:04:34,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-01-07 05:04:34,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:34,554 INFO L225 Difference]: With dead ends: 58 [2021-01-07 05:04:34,554 INFO L226 Difference]: Without dead ends: 54 [2021-01-07 05:04:34,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:04:34,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-07 05:04:34,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-01-07 05:04:34,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-07 05:04:34,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2021-01-07 05:04:34,556 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 14 [2021-01-07 05:04:34,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:34,556 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2021-01-07 05:04:34,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:04:34,557 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2021-01-07 05:04:34,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-07 05:04:34,557 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:34,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:34,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-07 05:04:34,558 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 05:04:34,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:34,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1062174023, now seen corresponding path program 1 times [2021-01-07 05:04:34,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:34,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232889861] [2021-01-07 05:04:34,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:34,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:34,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232889861] [2021-01-07 05:04:34,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:34,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:04:34,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619237042] [2021-01-07 05:04:34,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:04:34,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:34,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:04:34,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:04:34,596 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 5 states. [2021-01-07 05:04:34,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:34,646 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2021-01-07 05:04:34,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:04:34,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-01-07 05:04:34,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:34,647 INFO L225 Difference]: With dead ends: 53 [2021-01-07 05:04:34,647 INFO L226 Difference]: Without dead ends: 53 [2021-01-07 05:04:34,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:04:34,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-01-07 05:04:34,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-01-07 05:04:34,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-07 05:04:34,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-01-07 05:04:34,650 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 15 [2021-01-07 05:04:34,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:34,650 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-01-07 05:04:34,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:04:34,650 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-01-07 05:04:34,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-07 05:04:34,651 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:34,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:34,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-07 05:04:34,651 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 05:04:34,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:34,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1062174024, now seen corresponding path program 1 times [2021-01-07 05:04:34,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:34,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097359737] [2021-01-07 05:04:34,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:34,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:34,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097359737] [2021-01-07 05:04:34,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:34,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-07 05:04:34,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045000822] [2021-01-07 05:04:34,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:04:34,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:34,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:04:34,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:04:34,735 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 7 states. [2021-01-07 05:04:34,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:34,822 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2021-01-07 05:04:34,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:04:34,823 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2021-01-07 05:04:34,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:34,824 INFO L225 Difference]: With dead ends: 53 [2021-01-07 05:04:34,824 INFO L226 Difference]: Without dead ends: 53 [2021-01-07 05:04:34,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:04:34,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-01-07 05:04:34,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-01-07 05:04:34,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-07 05:04:34,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2021-01-07 05:04:34,826 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 15 [2021-01-07 05:04:34,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:34,827 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2021-01-07 05:04:34,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:04:34,827 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2021-01-07 05:04:34,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-07 05:04:34,828 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:34,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:34,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-07 05:04:34,828 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 05:04:34,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:34,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1452978584, now seen corresponding path program 1 times [2021-01-07 05:04:34,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:34,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626115452] [2021-01-07 05:04:34,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:34,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:34,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626115452] [2021-01-07 05:04:34,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:34,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:04:34,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890615967] [2021-01-07 05:04:34,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:04:34,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:34,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:04:34,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:04:34,860 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 4 states. [2021-01-07 05:04:34,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:34,895 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-01-07 05:04:34,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:04:34,896 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2021-01-07 05:04:34,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:34,896 INFO L225 Difference]: With dead ends: 52 [2021-01-07 05:04:34,897 INFO L226 Difference]: Without dead ends: 52 [2021-01-07 05:04:34,897 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 05:04:34,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-07 05:04:34,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-01-07 05:04:34,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-01-07 05:04:34,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2021-01-07 05:04:34,899 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 17 [2021-01-07 05:04:34,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:34,900 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2021-01-07 05:04:34,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:04:34,900 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2021-01-07 05:04:34,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-07 05:04:34,900 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:34,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:34,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-07 05:04:34,901 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 05:04:34,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:34,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1452978583, now seen corresponding path program 1 times [2021-01-07 05:04:34,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:34,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978379002] [2021-01-07 05:04:34,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:34,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:34,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978379002] [2021-01-07 05:04:34,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:34,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-07 05:04:34,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065450739] [2021-01-07 05:04:34,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:04:34,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:34,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:04:34,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:04:34,972 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 7 states. [2021-01-07 05:04:35,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:35,066 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2021-01-07 05:04:35,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:04:35,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2021-01-07 05:04:35,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:35,067 INFO L225 Difference]: With dead ends: 58 [2021-01-07 05:04:35,068 INFO L226 Difference]: Without dead ends: 58 [2021-01-07 05:04:35,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:04:35,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-01-07 05:04:35,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2021-01-07 05:04:35,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-07 05:04:35,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2021-01-07 05:04:35,070 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 17 [2021-01-07 05:04:35,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:35,071 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2021-01-07 05:04:35,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:04:35,071 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2021-01-07 05:04:35,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-07 05:04:35,071 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:35,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:35,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-07 05:04:35,072 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 05:04:35,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:35,073 INFO L82 PathProgramCache]: Analyzing trace with hash -448353975, now seen corresponding path program 1 times [2021-01-07 05:04:35,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:35,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591646767] [2021-01-07 05:04:35,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:35,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:35,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591646767] [2021-01-07 05:04:35,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:35,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:04:35,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119768614] [2021-01-07 05:04:35,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:04:35,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:35,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:04:35,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:04:35,106 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 5 states. [2021-01-07 05:04:35,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:35,153 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-01-07 05:04:35,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:04:35,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2021-01-07 05:04:35,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:35,155 INFO L225 Difference]: With dead ends: 52 [2021-01-07 05:04:35,155 INFO L226 Difference]: Without dead ends: 52 [2021-01-07 05:04:35,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:04:35,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-07 05:04:35,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-01-07 05:04:35,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-01-07 05:04:35,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2021-01-07 05:04:35,157 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 19 [2021-01-07 05:04:35,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:35,157 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2021-01-07 05:04:35,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:04:35,158 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2021-01-07 05:04:35,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-07 05:04:35,158 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:35,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:35,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-07 05:04:35,159 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 05:04:35,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:35,159 INFO L82 PathProgramCache]: Analyzing trace with hash -448353974, now seen corresponding path program 1 times [2021-01-07 05:04:35,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:35,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086800926] [2021-01-07 05:04:35,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:35,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:35,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086800926] [2021-01-07 05:04:35,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:35,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-07 05:04:35,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370883690] [2021-01-07 05:04:35,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:04:35,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:35,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:04:35,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:04:35,253 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 9 states. [2021-01-07 05:04:35,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:35,399 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2021-01-07 05:04:35,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:04:35,400 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2021-01-07 05:04:35,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:35,400 INFO L225 Difference]: With dead ends: 60 [2021-01-07 05:04:35,400 INFO L226 Difference]: Without dead ends: 57 [2021-01-07 05:04:35,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:04:35,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-01-07 05:04:35,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2021-01-07 05:04:35,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-01-07 05:04:35,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2021-01-07 05:04:35,404 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 19 [2021-01-07 05:04:35,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:35,404 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2021-01-07 05:04:35,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:04:35,404 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2021-01-07 05:04:35,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-07 05:04:35,405 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:35,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:35,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-01-07 05:04:35,406 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 05:04:35,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:35,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1075479959, now seen corresponding path program 1 times [2021-01-07 05:04:35,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:35,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497470488] [2021-01-07 05:04:35,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:35,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:35,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497470488] [2021-01-07 05:04:35,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:35,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-07 05:04:35,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676923676] [2021-01-07 05:04:35,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:04:35,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:35,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:04:35,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:04:35,590 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 8 states. [2021-01-07 05:04:35,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:35,716 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2021-01-07 05:04:35,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:04:35,716 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2021-01-07 05:04:35,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:35,717 INFO L225 Difference]: With dead ends: 68 [2021-01-07 05:04:35,717 INFO L226 Difference]: Without dead ends: 46 [2021-01-07 05:04:35,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:04:35,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-01-07 05:04:35,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-01-07 05:04:35,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-07 05:04:35,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-01-07 05:04:35,719 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 21 [2021-01-07 05:04:35,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:35,719 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-01-07 05:04:35,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:04:35,720 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-01-07 05:04:35,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-07 05:04:35,720 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:35,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:35,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-01-07 05:04:35,721 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 05:04:35,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:35,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1530543595, now seen corresponding path program 1 times [2021-01-07 05:04:35,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:35,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71098115] [2021-01-07 05:04:35,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:35,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:35,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71098115] [2021-01-07 05:04:35,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:35,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-07 05:04:35,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17922950] [2021-01-07 05:04:35,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:04:35,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:35,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:04:35,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:04:35,865 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 9 states. [2021-01-07 05:04:36,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:36,019 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2021-01-07 05:04:36,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:04:36,019 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2021-01-07 05:04:36,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:36,020 INFO L225 Difference]: With dead ends: 71 [2021-01-07 05:04:36,020 INFO L226 Difference]: Without dead ends: 54 [2021-01-07 05:04:36,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:04:36,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-07 05:04:36,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2021-01-07 05:04:36,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-01-07 05:04:36,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-01-07 05:04:36,023 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 21 [2021-01-07 05:04:36,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:36,023 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-01-07 05:04:36,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:04:36,023 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-01-07 05:04:36,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-07 05:04:36,026 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:36,026 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] [2021-01-07 05:04:36,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-01-07 05:04:36,026 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 05:04:36,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:36,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1247746578, now seen corresponding path program 1 times [2021-01-07 05:04:36,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:36,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187902994] [2021-01-07 05:04:36,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:36,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187902994] [2021-01-07 05:04:36,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050063550] [2021-01-07 05:04:36,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:36,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-07 05:04:36,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:36,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:36,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:36,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-01-07 05:04:36,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265141228] [2021-01-07 05:04:36,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-07 05:04:36,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:36,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-07 05:04:36,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:04:36,389 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 14 states. [2021-01-07 05:04:36,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:36,629 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2021-01-07 05:04:36,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:04:36,630 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2021-01-07 05:04:36,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:36,631 INFO L225 Difference]: With dead ends: 66 [2021-01-07 05:04:36,631 INFO L226 Difference]: Without dead ends: 66 [2021-01-07 05:04:36,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-01-07 05:04:36,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-01-07 05:04:36,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 56. [2021-01-07 05:04:36,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-01-07 05:04:36,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2021-01-07 05:04:36,634 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 25 [2021-01-07 05:04:36,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:36,634 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2021-01-07 05:04:36,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-07 05:04:36,634 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2021-01-07 05:04:36,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-07 05:04:36,635 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:36,635 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:36,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-07 05:04:36,843 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 05:04:36,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:36,845 INFO L82 PathProgramCache]: Analyzing trace with hash -788585585, now seen corresponding path program 1 times [2021-01-07 05:04:36,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:36,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779886976] [2021-01-07 05:04:36,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:37,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:04:37,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779886976] [2021-01-07 05:04:37,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:37,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-01-07 05:04:37,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815528148] [2021-01-07 05:04:37,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:04:37,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:37,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:04:37,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:04:37,049 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand 11 states. [2021-01-07 05:04:37,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:37,234 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2021-01-07 05:04:37,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:04:37,234 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2021-01-07 05:04:37,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:37,235 INFO L225 Difference]: With dead ends: 66 [2021-01-07 05:04:37,235 INFO L226 Difference]: Without dead ends: 48 [2021-01-07 05:04:37,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-01-07 05:04:37,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-01-07 05:04:37,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-01-07 05:04:37,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-01-07 05:04:37,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-01-07 05:04:37,240 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 27 [2021-01-07 05:04:37,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:37,240 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-01-07 05:04:37,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-07 05:04:37,240 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-01-07 05:04:37,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-07 05:04:37,242 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:37,242 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:37,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-01-07 05:04:37,243 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 05:04:37,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:37,243 INFO L82 PathProgramCache]: Analyzing trace with hash -922599091, now seen corresponding path program 1 times [2021-01-07 05:04:37,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:37,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521307509] [2021-01-07 05:04:37,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:37,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:04:37,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521307509] [2021-01-07 05:04:37,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:37,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-01-07 05:04:37,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438711642] [2021-01-07 05:04:37,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-07 05:04:37,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:37,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-07 05:04:37,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:04:37,472 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 13 states. [2021-01-07 05:04:37,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:37,691 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2021-01-07 05:04:37,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-07 05:04:37,692 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2021-01-07 05:04:37,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:37,692 INFO L225 Difference]: With dead ends: 62 [2021-01-07 05:04:37,692 INFO L226 Difference]: Without dead ends: 52 [2021-01-07 05:04:37,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:04:37,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-07 05:04:37,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2021-01-07 05:04:37,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-01-07 05:04:37,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2021-01-07 05:04:37,698 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 27 [2021-01-07 05:04:37,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:37,698 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2021-01-07 05:04:37,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-07 05:04:37,698 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2021-01-07 05:04:37,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-07 05:04:37,700 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:37,700 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:37,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-01-07 05:04:37,700 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 05:04:37,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:37,701 INFO L82 PathProgramCache]: Analyzing trace with hash 904511312, now seen corresponding path program 1 times [2021-01-07 05:04:37,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:37,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016333756] [2021-01-07 05:04:37,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:37,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:04:37,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016333756] [2021-01-07 05:04:37,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442294491] [2021-01-07 05:04:37,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:37,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-07 05:04:37,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:38,070 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:04:38,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:38,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2021-01-07 05:04:38,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484556264] [2021-01-07 05:04:38,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-07 05:04:38,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:38,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-07 05:04:38,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:04:38,072 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 16 states. [2021-01-07 05:04:38,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:38,306 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2021-01-07 05:04:38,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:04:38,307 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 31 [2021-01-07 05:04:38,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:38,307 INFO L225 Difference]: With dead ends: 52 [2021-01-07 05:04:38,307 INFO L226 Difference]: Without dead ends: 52 [2021-01-07 05:04:38,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:04:38,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-07 05:04:38,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2021-01-07 05:04:38,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-01-07 05:04:38,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2021-01-07 05:04:38,310 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 31 [2021-01-07 05:04:38,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:38,310 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2021-01-07 05:04:38,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-07 05:04:38,310 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2021-01-07 05:04:38,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-07 05:04:38,311 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:38,311 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:38,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:38,525 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 05:04:38,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:38,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1651977841, now seen corresponding path program 1 times [2021-01-07 05:04:38,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:38,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567222581] [2021-01-07 05:04:38,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:38,600 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:04:38,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567222581] [2021-01-07 05:04:38,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728205370] [2021-01-07 05:04:38,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:38,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:38,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-07 05:04:38,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:38,685 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_24|], 1=[|v_#valid_31|]} [2021-01-07 05:04:38,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:04:38,689 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:04:38,690 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:38,698 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:38,703 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 05:04:38,705 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:38,712 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:38,717 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:38,717 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2021-01-07 05:04:38,859 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:04:38,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:38,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-01-07 05:04:38,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361252970] [2021-01-07 05:04:38,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-07 05:04:38,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:38,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-07 05:04:38,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:04:38,862 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 14 states. [2021-01-07 05:04:39,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:39,269 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2021-01-07 05:04:39,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:04:39,270 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2021-01-07 05:04:39,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:39,270 INFO L225 Difference]: With dead ends: 52 [2021-01-07 05:04:39,271 INFO L226 Difference]: Without dead ends: 52 [2021-01-07 05:04:39,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:04:39,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-07 05:04:39,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2021-01-07 05:04:39,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-07 05:04:39,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2021-01-07 05:04:39,273 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 33 [2021-01-07 05:04:39,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:39,273 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2021-01-07 05:04:39,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-07 05:04:39,273 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2021-01-07 05:04:39,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-01-07 05:04:39,274 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:39,274 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:39,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-07 05:04:39,483 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 05:04:39,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:39,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1587501230, now seen corresponding path program 1 times [2021-01-07 05:04:39,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:39,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189750066] [2021-01-07 05:04:39,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:39,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:39,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:04:39,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189750066] [2021-01-07 05:04:39,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837987946] [2021-01-07 05:04:39,618 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:39,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-07 05:04:39,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:39,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:04:39,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:39,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2021-01-07 05:04:39,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971532339] [2021-01-07 05:04:39,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-07 05:04:39,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:39,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-07 05:04:39,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:04:39,808 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 17 states. [2021-01-07 05:04:40,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:40,122 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2021-01-07 05:04:40,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:04:40,123 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 35 [2021-01-07 05:04:40,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:40,123 INFO L225 Difference]: With dead ends: 59 [2021-01-07 05:04:40,124 INFO L226 Difference]: Without dead ends: 56 [2021-01-07 05:04:40,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:04:40,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-01-07 05:04:40,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 46. [2021-01-07 05:04:40,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-07 05:04:40,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2021-01-07 05:04:40,126 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 35 [2021-01-07 05:04:40,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:40,126 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2021-01-07 05:04:40,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-07 05:04:40,126 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2021-01-07 05:04:40,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-07 05:04:40,127 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:40,127 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:40,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:40,328 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 05:04:40,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:40,330 INFO L82 PathProgramCache]: Analyzing trace with hash -579332495, now seen corresponding path program 1 times [2021-01-07 05:04:40,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:40,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667809679] [2021-01-07 05:04:40,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:40,648 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:04:40,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667809679] [2021-01-07 05:04:40,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182273950] [2021-01-07 05:04:40,649 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:40,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 51 conjunts are in the unsatisfiable core [2021-01-07 05:04:40,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:40,834 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:04:40,835 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:40,840 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:40,842 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 05:04:40,842 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:04:41,216 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 05:04:41,217 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:41,218 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:41,219 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 05:04:41,219 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 05:04:41,227 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:04:41,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:41,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 22 [2021-01-07 05:04:41,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027548207] [2021-01-07 05:04:41,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-07 05:04:41,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:41,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-07 05:04:41,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2021-01-07 05:04:41,229 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 22 states. [2021-01-07 05:04:42,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:42,884 INFO L93 Difference]: Finished difference Result 127 states and 130 transitions. [2021-01-07 05:04:42,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-07 05:04:42,884 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 37 [2021-01-07 05:04:42,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:42,885 INFO L225 Difference]: With dead ends: 127 [2021-01-07 05:04:42,885 INFO L226 Difference]: Without dead ends: 60 [2021-01-07 05:04:42,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=398, Invalid=2254, Unknown=0, NotChecked=0, Total=2652 [2021-01-07 05:04:42,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-01-07 05:04:42,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2021-01-07 05:04:42,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-07 05:04:42,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2021-01-07 05:04:42,892 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 37 [2021-01-07 05:04:42,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:42,892 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2021-01-07 05:04:42,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-07 05:04:42,892 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2021-01-07 05:04:42,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-07 05:04:42,893 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:42,893 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-01-07 05:04:43,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-01-07 05:04:43,104 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 05:04:43,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:43,105 INFO L82 PathProgramCache]: Analyzing trace with hash -491067849, now seen corresponding path program 2 times [2021-01-07 05:04:43,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:43,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406957328] [2021-01-07 05:04:43,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:43,280 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:04:43,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406957328] [2021-01-07 05:04:43,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686813570] [2021-01-07 05:04:43,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:43,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:04:43,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:04:43,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-07 05:04:43,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:43,493 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:04:43,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:43,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-01-07 05:04:43,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662507458] [2021-01-07 05:04:43,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-07 05:04:43,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:43,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-07 05:04:43,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:04:43,495 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 17 states. [2021-01-07 05:04:43,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:43,803 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2021-01-07 05:04:43,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:04:43,804 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2021-01-07 05:04:43,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:43,805 INFO L225 Difference]: With dead ends: 67 [2021-01-07 05:04:43,805 INFO L226 Difference]: Without dead ends: 67 [2021-01-07 05:04:43,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:04:43,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-01-07 05:04:43,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 59. [2021-01-07 05:04:43,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-01-07 05:04:43,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2021-01-07 05:04:43,808 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 45 [2021-01-07 05:04:43,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:43,809 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2021-01-07 05:04:43,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-07 05:04:43,809 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2021-01-07 05:04:43,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-07 05:04:43,809 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:43,809 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-01-07 05:04:44,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-07 05:04:44,025 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 05:04:44,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:44,026 INFO L82 PathProgramCache]: Analyzing trace with hash 530199960, now seen corresponding path program 2 times [2021-01-07 05:04:44,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:44,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599968961] [2021-01-07 05:04:44,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:44,230 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:04:44,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599968961] [2021-01-07 05:04:44,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211923874] [2021-01-07 05:04:44,231 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:44,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:04:44,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:04:44,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-07 05:04:44,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:44,446 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:04:44,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:44,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 17 [2021-01-07 05:04:44,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671659277] [2021-01-07 05:04:44,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-07 05:04:44,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:44,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-07 05:04:44,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-01-07 05:04:44,448 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 18 states. [2021-01-07 05:04:44,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:44,765 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2021-01-07 05:04:44,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:04:44,766 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 47 [2021-01-07 05:04:44,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:44,766 INFO L225 Difference]: With dead ends: 62 [2021-01-07 05:04:44,766 INFO L226 Difference]: Without dead ends: 62 [2021-01-07 05:04:44,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:04:44,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-01-07 05:04:44,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2021-01-07 05:04:44,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-01-07 05:04:44,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2021-01-07 05:04:44,769 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 47 [2021-01-07 05:04:44,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:44,769 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2021-01-07 05:04:44,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-07 05:04:44,770 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2021-01-07 05:04:44,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-07 05:04:44,770 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:44,770 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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 05:04:44,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:44,985 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 05:04:44,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:44,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1243825766, now seen corresponding path program 2 times [2021-01-07 05:04:44,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:44,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742271737] [2021-01-07 05:04:44,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:45,170 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:04:45,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742271737] [2021-01-07 05:04:45,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574514064] [2021-01-07 05:04:45,170 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:45,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-07 05:04:45,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:04:45,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-07 05:04:45,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:45,341 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-01-07 05:04:45,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:04:45,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2021-01-07 05:04:45,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728848419] [2021-01-07 05:04:45,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:04:45,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:45,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:04:45,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:04:45,343 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 5 states. [2021-01-07 05:04:45,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:45,406 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2021-01-07 05:04:45,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:04:45,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2021-01-07 05:04:45,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:45,407 INFO L225 Difference]: With dead ends: 60 [2021-01-07 05:04:45,407 INFO L226 Difference]: Without dead ends: 57 [2021-01-07 05:04:45,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:04:45,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-01-07 05:04:45,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-01-07 05:04:45,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-01-07 05:04:45,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2021-01-07 05:04:45,416 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 51 [2021-01-07 05:04:45,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:45,417 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2021-01-07 05:04:45,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:04:45,417 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2021-01-07 05:04:45,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-07 05:04:45,418 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:45,418 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:45,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:45,622 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 05:04:45,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:45,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1019693383, now seen corresponding path program 3 times [2021-01-07 05:04:45,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:45,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524375332] [2021-01-07 05:04:45,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:45,887 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:04:45,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524375332] [2021-01-07 05:04:45,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208651312] [2021-01-07 05:04:45,888 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:45,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-07 05:04:45,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:04:45,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 81 conjunts are in the unsatisfiable core [2021-01-07 05:04:45,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:46,169 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:04:46,170 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:46,177 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:46,179 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 05:04:46,179 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:23 [2021-01-07 05:04:47,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:04:47,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:04:47,030 INFO L348 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-01-07 05:04:47,031 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 21 [2021-01-07 05:04:47,033 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:47,041 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:47,044 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:47,044 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:46, output treesize:3 [2021-01-07 05:04:47,067 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:04:47,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:47,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 20] total 31 [2021-01-07 05:04:47,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738134126] [2021-01-07 05:04:47,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-01-07 05:04:47,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:47,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-01-07 05:04:47,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=859, Unknown=0, NotChecked=0, Total=930 [2021-01-07 05:04:47,070 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 31 states. [2021-01-07 05:04:50,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:50,779 INFO L93 Difference]: Finished difference Result 166 states and 169 transitions. [2021-01-07 05:04:50,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-01-07 05:04:50,780 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 53 [2021-01-07 05:04:50,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:50,780 INFO L225 Difference]: With dead ends: 166 [2021-01-07 05:04:50,780 INFO L226 Difference]: Without dead ends: 71 [2021-01-07 05:04:50,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1053 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=648, Invalid=4902, Unknown=0, NotChecked=0, Total=5550 [2021-01-07 05:04:50,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-01-07 05:04:50,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2021-01-07 05:04:50,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-07 05:04:50,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2021-01-07 05:04:50,789 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 53 [2021-01-07 05:04:50,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:50,789 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2021-01-07 05:04:50,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2021-01-07 05:04:50,790 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2021-01-07 05:04:50,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-07 05:04:50,790 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:50,790 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-01-07 05:04:51,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-01-07 05:04:51,005 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 05:04:51,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:51,006 INFO L82 PathProgramCache]: Analyzing trace with hash -2077042049, now seen corresponding path program 4 times [2021-01-07 05:04:51,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:51,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737326068] [2021-01-07 05:04:51,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:51,233 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 41 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:04:51,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737326068] [2021-01-07 05:04:51,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109143302] [2021-01-07 05:04:51,234 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 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 05:04:51,338 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:04:51,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:04:51,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 60 conjunts are in the unsatisfiable core [2021-01-07 05:04:51,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:51,785 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:04:51,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:51,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-01-07 05:04:51,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275983746] [2021-01-07 05:04:51,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-07 05:04:51,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:51,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-07 05:04:51,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2021-01-07 05:04:51,787 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 26 states. [2021-01-07 05:04:52,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:52,615 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2021-01-07 05:04:52,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-07 05:04:52,616 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 61 [2021-01-07 05:04:52,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:52,616 INFO L225 Difference]: With dead ends: 75 [2021-01-07 05:04:52,617 INFO L226 Difference]: Without dead ends: 75 [2021-01-07 05:04:52,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2021-01-07 05:04:52,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-01-07 05:04:52,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2021-01-07 05:04:52,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-01-07 05:04:52,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2021-01-07 05:04:52,620 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 61 [2021-01-07 05:04:52,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:52,621 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2021-01-07 05:04:52,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-01-07 05:04:52,621 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2021-01-07 05:04:52,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-07 05:04:52,621 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:52,621 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-01-07 05:04:52,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:52,831 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 05:04:52,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:52,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1122383840, now seen corresponding path program 3 times [2021-01-07 05:04:52,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:52,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211755661] [2021-01-07 05:04:52,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:53,094 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:04:53,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211755661] [2021-01-07 05:04:53,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059402057] [2021-01-07 05:04:53,095 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 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 05:04:53,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-07 05:04:53,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:04:53,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-07 05:04:53,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:53,477 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:04:53,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:53,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2021-01-07 05:04:53,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350935098] [2021-01-07 05:04:53,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-07 05:04:53,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:53,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-07 05:04:53,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2021-01-07 05:04:53,480 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 25 states. [2021-01-07 05:04:53,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:53,966 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2021-01-07 05:04:53,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-07 05:04:53,967 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 63 [2021-01-07 05:04:53,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:53,968 INFO L225 Difference]: With dead ends: 74 [2021-01-07 05:04:53,968 INFO L226 Difference]: Without dead ends: 74 [2021-01-07 05:04:53,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=231, Invalid=891, Unknown=0, NotChecked=0, Total=1122 [2021-01-07 05:04:53,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-01-07 05:04:53,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2021-01-07 05:04:53,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-01-07 05:04:53,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2021-01-07 05:04:53,971 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 63 [2021-01-07 05:04:53,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:53,971 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2021-01-07 05:04:53,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-01-07 05:04:53,972 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2021-01-07 05:04:53,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-01-07 05:04:53,972 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:53,972 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:54,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-01-07 05:04:54,173 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 05:04:54,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:54,174 INFO L82 PathProgramCache]: Analyzing trace with hash -356785407, now seen corresponding path program 5 times [2021-01-07 05:04:54,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:54,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58612858] [2021-01-07 05:04:54,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:54,487 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 57 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:04:54,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58612858] [2021-01-07 05:04:54,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156312378] [2021-01-07 05:04:54,487 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 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 05:04:54,924 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-07 05:04:54,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:04:54,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 87 conjunts are in the unsatisfiable core [2021-01-07 05:04:54,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:55,094 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:04:55,094 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:55,101 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:55,102 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 05:04:55,103 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:04:55,698 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 05:04:55,699 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:55,700 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:55,701 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 05:04:55,701 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 05:04:55,720 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 57 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:04:55,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:55,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 30 [2021-01-07 05:04:55,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491738275] [2021-01-07 05:04:55,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-01-07 05:04:55,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:55,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-01-07 05:04:55,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=808, Unknown=0, NotChecked=0, Total=870 [2021-01-07 05:04:55,723 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 30 states. [2021-01-07 05:04:59,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:59,033 INFO L93 Difference]: Finished difference Result 210 states and 213 transitions. [2021-01-07 05:04:59,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-01-07 05:04:59,034 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 69 [2021-01-07 05:04:59,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:59,035 INFO L225 Difference]: With dead ends: 210 [2021-01-07 05:04:59,035 INFO L226 Difference]: Without dead ends: 87 [2021-01-07 05:04:59,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=566, Invalid=4546, Unknown=0, NotChecked=0, Total=5112 [2021-01-07 05:04:59,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-01-07 05:04:59,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 81. [2021-01-07 05:04:59,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-01-07 05:04:59,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2021-01-07 05:04:59,039 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 69 [2021-01-07 05:04:59,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:59,039 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2021-01-07 05:04:59,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-01-07 05:04:59,039 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2021-01-07 05:04:59,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-01-07 05:04:59,040 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:59,040 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-01-07 05:04:59,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:59,253 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 05:04:59,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:59,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1781179705, now seen corresponding path program 6 times [2021-01-07 05:04:59,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:59,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815982725] [2021-01-07 05:04:59,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:59,496 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 6 proven. 74 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:04:59,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815982725] [2021-01-07 05:04:59,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110404350] [2021-01-07 05:04:59,497 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 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 05:04:59,639 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-07 05:04:59,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:04:59,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 41 conjunts are in the unsatisfiable core [2021-01-07 05:04:59,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 15 proven. 65 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:04:59,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:59,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2021-01-07 05:04:59,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781836801] [2021-01-07 05:04:59,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-01-07 05:04:59,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:59,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-01-07 05:04:59,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2021-01-07 05:04:59,950 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 27 states. [2021-01-07 05:05:00,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:00,749 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2021-01-07 05:05:00,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-07 05:05:00,750 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 77 [2021-01-07 05:05:00,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:00,750 INFO L225 Difference]: With dead ends: 91 [2021-01-07 05:05:00,750 INFO L226 Difference]: Without dead ends: 91 [2021-01-07 05:05:00,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=302, Invalid=1104, Unknown=0, NotChecked=0, Total=1406 [2021-01-07 05:05:00,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-01-07 05:05:00,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2021-01-07 05:05:00,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-01-07 05:05:00,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2021-01-07 05:05:00,756 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 77 [2021-01-07 05:05:00,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:00,757 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2021-01-07 05:05:00,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-01-07 05:05:00,757 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2021-01-07 05:05:00,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-01-07 05:05:00,759 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:00,759 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-01-07 05:05:00,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-01-07 05:05:00,968 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 05:05:00,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:00,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1978254888, now seen corresponding path program 4 times [2021-01-07 05:05:00,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:00,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271770240] [2021-01-07 05:05:00,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:01,251 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 6 proven. 82 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:05:01,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271770240] [2021-01-07 05:05:01,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036503591] [2021-01-07 05:05:01,252 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:01,433 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:05:01,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:01,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 51 conjunts are in the unsatisfiable core [2021-01-07 05:05:01,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 15 proven. 73 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:05:01,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:01,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 23 [2021-01-07 05:05:01,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360491298] [2021-01-07 05:05:01,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-07 05:05:01,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:01,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-07 05:05:01,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:05:01,680 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand 24 states. [2021-01-07 05:05:02,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:02,244 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2021-01-07 05:05:02,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-07 05:05:02,245 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 79 [2021-01-07 05:05:02,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:02,246 INFO L225 Difference]: With dead ends: 90 [2021-01-07 05:05:02,246 INFO L226 Difference]: Without dead ends: 90 [2021-01-07 05:05:02,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=205, Invalid=787, Unknown=0, NotChecked=0, Total=992 [2021-01-07 05:05:02,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-01-07 05:05:02,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2021-01-07 05:05:02,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-01-07 05:05:02,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2021-01-07 05:05:02,252 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 79 [2021-01-07 05:05:02,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:02,253 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2021-01-07 05:05:02,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-01-07 05:05:02,253 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2021-01-07 05:05:02,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-01-07 05:05:02,253 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:02,253 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:02,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:02,461 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 05:05:02,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:02,465 INFO L82 PathProgramCache]: Analyzing trace with hash 622697289, now seen corresponding path program 7 times [2021-01-07 05:05:02,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:02,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869894858] [2021-01-07 05:05:02,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:02,873 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 13 proven. 100 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:05:02,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869894858] [2021-01-07 05:05:02,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659075473] [2021-01-07 05:05:02,873 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:02,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 65 conjunts are in the unsatisfiable core [2021-01-07 05:05:02,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:02,999 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-07 05:05:03,009 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:03,012 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:03,013 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:03,013 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-07 05:05:03,232 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 05:05:03,232 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:03,238 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:03,239 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:05:03,240 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2021-01-07 05:05:03,307 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 05:05:03,308 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:03,315 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:03,318 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 05:05:03,318 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:35, output treesize:31 [2021-01-07 05:05:04,042 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:04,043 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2021-01-07 05:05:04,045 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:05:04,059 INFO L625 ElimStorePlain]: treesize reduction 5, result has 73.7 percent of original size [2021-01-07 05:05:04,061 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:04,061 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:38, output treesize:3 [2021-01-07 05:05:04,138 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 13 proven. 100 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:05:04,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:04,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2021-01-07 05:05:04,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342095747] [2021-01-07 05:05:04,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-01-07 05:05:04,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:04,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-01-07 05:05:04,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=976, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 05:05:04,141 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand 33 states. [2021-01-07 05:05:08,947 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2021-01-07 05:05:13,064 WARN L197 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:05:17,231 WARN L197 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:05:21,407 WARN L197 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:05:25,596 WARN L197 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:05:27,906 WARN L197 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:05:32,029 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-01-07 05:05:32,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:32,039 INFO L93 Difference]: Finished difference Result 156 states and 159 transitions. [2021-01-07 05:05:32,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-07 05:05:32,040 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 85 [2021-01-07 05:05:32,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:32,041 INFO L225 Difference]: With dead ends: 156 [2021-01-07 05:05:32,041 INFO L226 Difference]: Without dead ends: 96 [2021-01-07 05:05:32,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 27.9s TimeCoverageRelationStatistics Valid=230, Invalid=1750, Unknown=0, NotChecked=0, Total=1980 [2021-01-07 05:05:32,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-01-07 05:05:32,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93. [2021-01-07 05:05:32,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-01-07 05:05:32,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2021-01-07 05:05:32,047 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 85 [2021-01-07 05:05:32,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:32,047 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2021-01-07 05:05:32,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2021-01-07 05:05:32,047 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2021-01-07 05:05:32,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-01-07 05:05:32,048 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:32,048 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-01-07 05:05:32,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-01-07 05:05:32,249 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 05:05:32,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:32,250 INFO L82 PathProgramCache]: Analyzing trace with hash 224549964, now seen corresponding path program 8 times [2021-01-07 05:05:32,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:32,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972426746] [2021-01-07 05:05:32,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:32,583 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 15 proven. 115 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:05:32,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972426746] [2021-01-07 05:05:32,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251757971] [2021-01-07 05:05:32,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:32,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:05:32,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:32,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 56 conjunts are in the unsatisfiable core [2021-01-07 05:05:32,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 28 proven. 102 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:05:32,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:32,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 25 [2021-01-07 05:05:32,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583972939] [2021-01-07 05:05:32,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-07 05:05:32,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:32,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-07 05:05:32,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2021-01-07 05:05:32,984 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand 26 states. [2021-01-07 05:05:33,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:33,809 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2021-01-07 05:05:33,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-07 05:05:33,809 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 89 [2021-01-07 05:05:33,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:33,810 INFO L225 Difference]: With dead ends: 103 [2021-01-07 05:05:33,810 INFO L226 Difference]: Without dead ends: 103 [2021-01-07 05:05:33,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=996, Unknown=0, NotChecked=0, Total=1260 [2021-01-07 05:05:33,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-01-07 05:05:33,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2021-01-07 05:05:33,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-01-07 05:05:33,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2021-01-07 05:05:33,813 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 89 [2021-01-07 05:05:33,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:33,814 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2021-01-07 05:05:33,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-01-07 05:05:33,814 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2021-01-07 05:05:33,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-01-07 05:05:33,814 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:33,815 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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] [2021-01-07 05:05:34,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-01-07 05:05:34,024 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 05:05:34,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:34,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1044150893, now seen corresponding path program 5 times [2021-01-07 05:05:34,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:34,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116665130] [2021-01-07 05:05:34,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:34,840 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 23 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:05:34,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116665130] [2021-01-07 05:05:34,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732719874] [2021-01-07 05:05:34,840 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 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 05:05:35,549 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-01-07 05:05:35,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:35,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 114 conjunts are in the unsatisfiable core [2021-01-07 05:05:35,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:35,570 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:35,571 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:05:35,572 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:35,598 INFO L625 ElimStorePlain]: treesize reduction 10, result has 70.6 percent of original size [2021-01-07 05:05:35,600 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 05:05:35,600 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:15 [2021-01-07 05:05:36,153 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 05:05:36,154 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:36,160 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:36,161 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:36,161 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:20 [2021-01-07 05:05:37,007 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 05:05:37,009 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 05:05:37,024 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:37,027 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-01-07 05:05:37,028 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:38 [2021-01-07 05:05:37,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:05:37,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:05:37,269 INFO L348 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-01-07 05:05:37,270 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 21 [2021-01-07 05:05:37,271 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:37,280 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:37,282 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 05:05:37,282 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:39, output treesize:3 [2021-01-07 05:05:37,324 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 23 proven. 144 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:37,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:37,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 29] total 53 [2021-01-07 05:05:37,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003046062] [2021-01-07 05:05:37,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-01-07 05:05:37,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:37,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-01-07 05:05:37,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2587, Unknown=0, NotChecked=0, Total=2756 [2021-01-07 05:05:37,326 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand 53 states. [2021-01-07 05:05:40,994 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2021-01-07 05:05:41,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:41,322 INFO L93 Difference]: Finished difference Result 151 states and 153 transitions. [2021-01-07 05:05:41,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-07 05:05:41,323 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 91 [2021-01-07 05:05:41,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:41,324 INFO L225 Difference]: With dead ends: 151 [2021-01-07 05:05:41,324 INFO L226 Difference]: Without dead ends: 109 [2021-01-07 05:05:41,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1403 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=612, Invalid=5708, Unknown=0, NotChecked=0, Total=6320 [2021-01-07 05:05:41,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-01-07 05:05:41,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2021-01-07 05:05:41,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2021-01-07 05:05:41,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2021-01-07 05:05:41,330 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 91 [2021-01-07 05:05:41,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:41,330 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2021-01-07 05:05:41,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2021-01-07 05:05:41,330 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2021-01-07 05:05:41,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-01-07 05:05:41,331 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:41,331 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:41,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-01-07 05:05:41,532 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 05:05:41,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:41,532 INFO L82 PathProgramCache]: Analyzing trace with hash 180412528, now seen corresponding path program 6 times [2021-01-07 05:05:41,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:41,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696853234] [2021-01-07 05:05:41,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:41,882 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 15 proven. 125 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-01-07 05:05:41,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696853234] [2021-01-07 05:05:41,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427090036] [2021-01-07 05:05:41,883 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 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 05:05:42,098 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-01-07 05:05:42,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:42,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 54 conjunts are in the unsatisfiable core [2021-01-07 05:05:42,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:42,124 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:42,124 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:05:42,125 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:42,143 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:05:42,144 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:42,145 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:05:42,706 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 28 proven. 112 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-01-07 05:05:42,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:42,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 32 [2021-01-07 05:05:42,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13298987] [2021-01-07 05:05:42,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-01-07 05:05:42,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:42,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-01-07 05:05:42,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=925, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 05:05:42,708 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand 33 states. [2021-01-07 05:05:43,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:43,895 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2021-01-07 05:05:43,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-07 05:05:43,895 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 95 [2021-01-07 05:05:43,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:43,897 INFO L225 Difference]: With dead ends: 106 [2021-01-07 05:05:43,897 INFO L226 Difference]: Without dead ends: 106 [2021-01-07 05:05:43,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=414, Invalid=1656, Unknown=0, NotChecked=0, Total=2070 [2021-01-07 05:05:43,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-01-07 05:05:43,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2021-01-07 05:05:43,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2021-01-07 05:05:43,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2021-01-07 05:05:43,901 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 95 [2021-01-07 05:05:43,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:43,901 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2021-01-07 05:05:43,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2021-01-07 05:05:43,902 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2021-01-07 05:05:43,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-01-07 05:05:43,902 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:43,902 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:44,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-01-07 05:05:44,117 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:05:44,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:44,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1082531951, now seen corresponding path program 9 times [2021-01-07 05:05:44,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:44,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51323510] [2021-01-07 05:05:44,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:44,608 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 16 proven. 155 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-01-07 05:05:44,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51323510] [2021-01-07 05:05:44,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762884890] [2021-01-07 05:05:44,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:45,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-07 05:05:45,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:45,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 116 conjunts are in the unsatisfiable core [2021-01-07 05:05:45,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:45,040 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-07 05:05:45,042 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:45,048 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:45,049 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:45,049 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2021-01-07 05:05:45,393 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 05:05:45,394 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:45,421 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:45,422 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:05:45,423 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:27 [2021-01-07 05:05:45,490 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 05:05:45,491 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:45,505 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:45,506 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:05:45,506 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:41, output treesize:37 [2021-01-07 05:05:46,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:05:46,879 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-01-07 05:05:46,881 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:46,888 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:46,891 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 05:05:46,892 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:36, output treesize:3 [2021-01-07 05:05:47,010 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 16 proven. 155 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-01-07 05:05:47,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:47,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 26] total 43 [2021-01-07 05:05:47,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134206649] [2021-01-07 05:05:47,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-01-07 05:05:47,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:47,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-01-07 05:05:47,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1692, Unknown=0, NotChecked=0, Total=1806 [2021-01-07 05:05:47,013 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 43 states. [2021-01-07 05:05:50,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:50,063 INFO L93 Difference]: Finished difference Result 184 states and 187 transitions. [2021-01-07 05:05:50,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-07 05:05:50,064 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 101 [2021-01-07 05:05:50,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:50,065 INFO L225 Difference]: With dead ends: 184 [2021-01-07 05:05:50,065 INFO L226 Difference]: Without dead ends: 112 [2021-01-07 05:05:50,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=356, Invalid=3304, Unknown=0, NotChecked=0, Total=3660 [2021-01-07 05:05:50,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-01-07 05:05:50,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2021-01-07 05:05:50,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-01-07 05:05:50,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2021-01-07 05:05:50,070 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 101 [2021-01-07 05:05:50,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:50,070 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2021-01-07 05:05:50,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2021-01-07 05:05:50,070 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2021-01-07 05:05:50,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-01-07 05:05:50,071 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:50,071 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:50,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:50,272 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:05:50,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:50,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1575339372, now seen corresponding path program 10 times [2021-01-07 05:05:50,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:50,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59417538] [2021-01-07 05:05:50,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:50,662 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 28 proven. 164 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-01-07 05:05:50,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59417538] [2021-01-07 05:05:50,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652877896] [2021-01-07 05:05:50,663 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:50,881 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:05:50,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:50,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 104 conjunts are in the unsatisfiable core [2021-01-07 05:05:50,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:50,908 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:50,909 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:05:50,910 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:50,925 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:05:50,927 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 05:05:50,927 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:05:51,230 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 05:05:51,231 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:51,236 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:51,236 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:51,237 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2021-01-07 05:05:51,739 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 05:05:51,740 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 05:05:51,755 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:51,758 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-01-07 05:05:51,758 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:41, output treesize:35 [2021-01-07 05:05:51,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:05:51,974 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:51,974 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 39 [2021-01-07 05:05:51,976 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:51,983 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:51,985 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:51,986 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:39, output treesize:3 [2021-01-07 05:05:52,063 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 102 proven. 69 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-01-07 05:05:52,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:52,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23] total 40 [2021-01-07 05:05:52,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566046210] [2021-01-07 05:05:52,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-01-07 05:05:52,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:52,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-01-07 05:05:52,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1427, Unknown=0, NotChecked=0, Total=1560 [2021-01-07 05:05:52,065 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand 40 states. [2021-01-07 05:05:58,204 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2021-01-07 05:05:58,389 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2021-01-07 05:05:58,579 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2021-01-07 05:05:58,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:58,840 INFO L93 Difference]: Finished difference Result 176 states and 178 transitions. [2021-01-07 05:05:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-01-07 05:05:58,841 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 105 [2021-01-07 05:05:58,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:58,842 INFO L225 Difference]: With dead ends: 176 [2021-01-07 05:05:58,842 INFO L226 Difference]: Without dead ends: 126 [2021-01-07 05:05:58,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1141, Invalid=5831, Unknown=0, NotChecked=0, Total=6972 [2021-01-07 05:05:58,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-01-07 05:05:58,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 119. [2021-01-07 05:05:58,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2021-01-07 05:05:58,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2021-01-07 05:05:58,847 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 105 [2021-01-07 05:05:58,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:58,850 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2021-01-07 05:05:58,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2021-01-07 05:05:58,850 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2021-01-07 05:05:58,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-07 05:05:58,854 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:58,854 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:59,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:59,062 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:05:59,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:59,063 INFO L82 PathProgramCache]: Analyzing trace with hash -813201736, now seen corresponding path program 7 times [2021-01-07 05:05:59,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:59,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826096802] [2021-01-07 05:05:59,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 28 proven. 176 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-01-07 05:05:59,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826096802] [2021-01-07 05:05:59,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089887717] [2021-01-07 05:05:59,489 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:59,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 69 conjunts are in the unsatisfiable core [2021-01-07 05:05:59,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:59,976 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 45 proven. 159 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-01-07 05:05:59,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:59,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 29 [2021-01-07 05:05:59,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629653724] [2021-01-07 05:05:59,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-01-07 05:05:59,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:59,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-01-07 05:05:59,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2021-01-07 05:05:59,977 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 30 states. [2021-01-07 05:06:00,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:00,906 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2021-01-07 05:06:00,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-07 05:06:00,907 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 111 [2021-01-07 05:06:00,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:00,908 INFO L225 Difference]: With dead ends: 122 [2021-01-07 05:06:00,908 INFO L226 Difference]: Without dead ends: 122 [2021-01-07 05:06:00,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=318, Invalid=1242, Unknown=0, NotChecked=0, Total=1560 [2021-01-07 05:06:00,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-01-07 05:06:00,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2021-01-07 05:06:00,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2021-01-07 05:06:00,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2021-01-07 05:06:00,911 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 111 [2021-01-07 05:06:00,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:00,911 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2021-01-07 05:06:00,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-01-07 05:06:00,911 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2021-01-07 05:06:00,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-01-07 05:06:00,912 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:00,912 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:01,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-01-07 05:06:01,123 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:01,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:01,124 INFO L82 PathProgramCache]: Analyzing trace with hash -2098417703, now seen corresponding path program 11 times [2021-01-07 05:06:01,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:01,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683403956] [2021-01-07 05:06:01,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:01,696 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 19 proven. 222 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-01-07 05:06:01,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683403956] [2021-01-07 05:06:01,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420494144] [2021-01-07 05:06:01,697 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:03,275 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-01-07 05:06:03,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:06:03,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 95 conjunts are in the unsatisfiable core [2021-01-07 05:06:03,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:03,296 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 05:06:03,300 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:03,304 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:03,305 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:06:03,305 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-07 05:06:03,706 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 05:06:03,706 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:03,714 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:03,715 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 05:06:03,716 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2021-01-07 05:06:03,785 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 05:06:03,786 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:03,797 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:03,799 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-01-07 05:06:03,799 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:31 [2021-01-07 05:06:05,027 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:05,028 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2021-01-07 05:06:05,030 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:06:05,047 INFO L625 ElimStorePlain]: treesize reduction 5, result has 73.7 percent of original size [2021-01-07 05:06:05,049 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 05:06:05,050 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:38, output treesize:3 [2021-01-07 05:06:05,177 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 19 proven. 222 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-01-07 05:06:05,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:05,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 42 [2021-01-07 05:06:05,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23612945] [2021-01-07 05:06:05,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-01-07 05:06:05,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:05,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-01-07 05:06:05,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1617, Unknown=0, NotChecked=0, Total=1722 [2021-01-07 05:06:05,179 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand 42 states. [2021-01-07 05:06:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:08,006 INFO L93 Difference]: Finished difference Result 212 states and 215 transitions. [2021-01-07 05:06:08,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-07 05:06:08,007 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 117 [2021-01-07 05:06:08,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:08,008 INFO L225 Difference]: With dead ends: 212 [2021-01-07 05:06:08,008 INFO L226 Difference]: Without dead ends: 128 [2021-01-07 05:06:08,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=285, Invalid=2795, Unknown=0, NotChecked=0, Total=3080 [2021-01-07 05:06:08,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-01-07 05:06:08,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 125. [2021-01-07 05:06:08,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2021-01-07 05:06:08,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2021-01-07 05:06:08,012 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 117 [2021-01-07 05:06:08,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:08,013 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2021-01-07 05:06:08,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2021-01-07 05:06:08,013 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2021-01-07 05:06:08,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-01-07 05:06:08,013 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:08,014 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:08,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:08,219 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:08,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:08,220 INFO L82 PathProgramCache]: Analyzing trace with hash 2037687516, now seen corresponding path program 12 times [2021-01-07 05:06:08,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:08,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843364905] [2021-01-07 05:06:08,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:08,731 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 45 proven. 221 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-01-07 05:06:08,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843364905] [2021-01-07 05:06:08,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058712822] [2021-01-07 05:06:08,732 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:09,514 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-01-07 05:06:09,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:06:09,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 99 conjunts are in the unsatisfiable core [2021-01-07 05:06:09,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:09,971 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 05:06:09,975 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:09,982 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:09,984 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 05:06:09,984 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2021-01-07 05:06:11,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:06:11,110 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:11,111 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 39 [2021-01-07 05:06:11,113 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:11,118 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:11,120 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 05:06:11,120 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:34, output treesize:3 [2021-01-07 05:06:11,223 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 19 proven. 222 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-01-07 05:06:11,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:11,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25] total 44 [2021-01-07 05:06:11,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208641788] [2021-01-07 05:06:11,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-01-07 05:06:11,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:11,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-01-07 05:06:11,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1777, Unknown=0, NotChecked=0, Total=1892 [2021-01-07 05:06:11,225 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 44 states. [2021-01-07 05:06:17,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:17,981 INFO L93 Difference]: Finished difference Result 200 states and 202 transitions. [2021-01-07 05:06:17,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-01-07 05:06:17,982 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 121 [2021-01-07 05:06:17,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:17,984 INFO L225 Difference]: With dead ends: 200 [2021-01-07 05:06:17,984 INFO L226 Difference]: Without dead ends: 142 [2021-01-07 05:06:17,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1191, Invalid=7365, Unknown=0, NotChecked=0, Total=8556 [2021-01-07 05:06:17,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-01-07 05:06:17,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 135. [2021-01-07 05:06:17,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2021-01-07 05:06:17,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2021-01-07 05:06:17,989 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 121 [2021-01-07 05:06:17,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:17,989 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2021-01-07 05:06:17,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2021-01-07 05:06:17,990 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2021-01-07 05:06:17,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-01-07 05:06:17,990 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:17,990 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:18,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-01-07 05:06:18,205 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:18,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:18,206 INFO L82 PathProgramCache]: Analyzing trace with hash 240761088, now seen corresponding path program 8 times [2021-01-07 05:06:18,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:18,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296737391] [2021-01-07 05:06:18,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:18,786 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 45 proven. 235 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-01-07 05:06:18,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296737391] [2021-01-07 05:06:18,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867260082] [2021-01-07 05:06:18,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:18,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:06:18,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:06:18,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 80 conjunts are in the unsatisfiable core [2021-01-07 05:06:18,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:18,932 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:18,932 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 05:06:18,934 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:18,954 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:06:18,959 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 05:06:18,959 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:06:19,862 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 66 proven. 214 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-01-07 05:06:19,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:19,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 40 [2021-01-07 05:06:19,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087688619] [2021-01-07 05:06:19,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-01-07 05:06:19,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:19,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-01-07 05:06:19,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2021-01-07 05:06:19,866 INFO L87 Difference]: Start difference. First operand 135 states and 137 transitions. Second operand 41 states. [2021-01-07 05:06:21,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:21,182 INFO L93 Difference]: Finished difference Result 138 states and 140 transitions. [2021-01-07 05:06:21,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-07 05:06:21,183 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 127 [2021-01-07 05:06:21,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:21,184 INFO L225 Difference]: With dead ends: 138 [2021-01-07 05:06:21,184 INFO L226 Difference]: Without dead ends: 138 [2021-01-07 05:06:21,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=433, Invalid=2219, Unknown=0, NotChecked=0, Total=2652 [2021-01-07 05:06:21,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-01-07 05:06:21,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2021-01-07 05:06:21,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2021-01-07 05:06:21,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2021-01-07 05:06:21,188 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 127 [2021-01-07 05:06:21,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:21,189 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2021-01-07 05:06:21,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2021-01-07 05:06:21,189 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2021-01-07 05:06:21,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-01-07 05:06:21,189 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:21,190 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:21,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-01-07 05:06:21,392 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:21,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:21,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1265497055, now seen corresponding path program 13 times [2021-01-07 05:06:21,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:21,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015734818] [2021-01-07 05:06:21,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:22,136 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 22 proven. 301 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-01-07 05:06:22,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015734818] [2021-01-07 05:06:22,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398674751] [2021-01-07 05:06:22,137 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:22,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 96 conjunts are in the unsatisfiable core [2021-01-07 05:06:22,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:22,299 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 05:06:22,300 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:22,304 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:22,305 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:06:22,305 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-07 05:06:22,808 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 05:06:22,809 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:22,817 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:22,818 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 05:06:22,819 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2021-01-07 05:06:22,899 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 05:06:22,900 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:22,912 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:22,914 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 05:06:22,915 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:35, output treesize:31 [2021-01-07 05:06:24,456 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:24,456 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2021-01-07 05:06:24,458 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:06:24,475 INFO L625 ElimStorePlain]: treesize reduction 5, result has 73.7 percent of original size [2021-01-07 05:06:24,477 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 05:06:24,477 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:38, output treesize:3 [2021-01-07 05:06:24,645 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 22 proven. 301 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-01-07 05:06:24,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:24,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 45 [2021-01-07 05:06:24,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633378944] [2021-01-07 05:06:24,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-01-07 05:06:24,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:24,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-01-07 05:06:24,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1870, Unknown=0, NotChecked=0, Total=1980 [2021-01-07 05:06:24,648 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand 45 states. [2021-01-07 05:06:30,294 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2021-01-07 05:06:34,474 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:06:38,738 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:06:43,052 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:06:47,386 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:06:51,714 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:06:56,075 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:07:00,410 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:07:04,776 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:07:09,002 WARN L197 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-01-07 05:07:09,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:09,036 INFO L93 Difference]: Finished difference Result 240 states and 243 transitions. [2021-01-07 05:07:09,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-07 05:07:09,037 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 133 [2021-01-07 05:07:09,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:09,039 INFO L225 Difference]: With dead ends: 240 [2021-01-07 05:07:09,039 INFO L226 Difference]: Without dead ends: 144 [2021-01-07 05:07:09,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 43.9s TimeCoverageRelationStatistics Valid=302, Invalid=3238, Unknown=0, NotChecked=0, Total=3540 [2021-01-07 05:07:09,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-01-07 05:07:09,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2021-01-07 05:07:09,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2021-01-07 05:07:09,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2021-01-07 05:07:09,045 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 133 [2021-01-07 05:07:09,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:09,045 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 143 transitions. [2021-01-07 05:07:09,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2021-01-07 05:07:09,046 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 143 transitions. [2021-01-07 05:07:09,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-01-07 05:07:09,047 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:09,047 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:09,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-01-07 05:07:09,248 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:09,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:09,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1083022116, now seen corresponding path program 14 times [2021-01-07 05:07:09,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:09,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062787272] [2021-01-07 05:07:09,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:10,026 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 66 proven. 286 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-01-07 05:07:10,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062787272] [2021-01-07 05:07:10,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746001904] [2021-01-07 05:07:10,027 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:10,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:07:10,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:10,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 83 conjunts are in the unsatisfiable core [2021-01-07 05:07:10,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 91 proven. 261 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-01-07 05:07:10,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:10,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 34 [2021-01-07 05:07:10,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429047153] [2021-01-07 05:07:10,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-01-07 05:07:10,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:10,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-01-07 05:07:10,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1033, Unknown=0, NotChecked=0, Total=1190 [2021-01-07 05:07:10,805 INFO L87 Difference]: Start difference. First operand 141 states and 143 transitions. Second operand 35 states. [2021-01-07 05:07:12,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:12,369 INFO L93 Difference]: Finished difference Result 151 states and 153 transitions. [2021-01-07 05:07:12,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-07 05:07:12,370 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 137 [2021-01-07 05:07:12,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:12,372 INFO L225 Difference]: With dead ends: 151 [2021-01-07 05:07:12,372 INFO L226 Difference]: Without dead ends: 151 [2021-01-07 05:07:12,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=468, Invalid=1788, Unknown=0, NotChecked=0, Total=2256 [2021-01-07 05:07:12,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-01-07 05:07:12,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2021-01-07 05:07:12,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2021-01-07 05:07:12,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2021-01-07 05:07:12,376 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 137 [2021-01-07 05:07:12,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:12,377 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 149 transitions. [2021-01-07 05:07:12,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2021-01-07 05:07:12,377 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 149 transitions. [2021-01-07 05:07:12,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-01-07 05:07:12,378 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:12,378 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:12,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-01-07 05:07:12,585 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:12,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:12,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1402168133, now seen corresponding path program 9 times [2021-01-07 05:07:12,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:12,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296887047] [2021-01-07 05:07:12,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:14,275 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 38 proven. 421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:14,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296887047] [2021-01-07 05:07:14,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51924682] [2021-01-07 05:07:14,276 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:15,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-01-07 05:07:15,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:15,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 191 conjunts are in the unsatisfiable core [2021-01-07 05:07:15,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:16,233 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 13 treesize of output 9 [2021-01-07 05:07:16,233 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:16,240 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:16,241 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:16,241 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2021-01-07 05:07:17,904 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:17,904 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 26 treesize of output 18 [2021-01-07 05:07:17,906 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:17,908 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:17,909 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 05:07:17,909 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:3 [2021-01-07 05:07:17,969 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 38 proven. 420 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:07:17,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:17,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 41] total 63 [2021-01-07 05:07:17,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526286535] [2021-01-07 05:07:17,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-01-07 05:07:17,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:17,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-01-07 05:07:17,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=3711, Unknown=0, NotChecked=0, Total=3906 [2021-01-07 05:07:17,971 INFO L87 Difference]: Start difference. First operand 147 states and 149 transitions. Second operand 63 states. [2021-01-07 05:07:24,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:24,742 INFO L93 Difference]: Finished difference Result 223 states and 225 transitions. [2021-01-07 05:07:24,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-01-07 05:07:24,743 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 139 [2021-01-07 05:07:24,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:24,745 INFO L225 Difference]: With dead ends: 223 [2021-01-07 05:07:24,745 INFO L226 Difference]: Without dead ends: 157 [2021-01-07 05:07:24,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1868 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=659, Invalid=7713, Unknown=0, NotChecked=0, Total=8372 [2021-01-07 05:07:24,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-01-07 05:07:24,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2021-01-07 05:07:24,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2021-01-07 05:07:24,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2021-01-07 05:07:24,750 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 139 [2021-01-07 05:07:24,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:24,751 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2021-01-07 05:07:24,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2021-01-07 05:07:24,751 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2021-01-07 05:07:24,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-01-07 05:07:24,752 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:24,752 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:24,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-01-07 05:07:24,959 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:24,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:24,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1923909816, now seen corresponding path program 10 times [2021-01-07 05:07:24,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:24,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109046122] [2021-01-07 05:07:24,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:25,732 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 66 proven. 302 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-01-07 05:07:25,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109046122] [2021-01-07 05:07:25,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898489852] [2021-01-07 05:07:25,733 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 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:26,395 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:07:26,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:26,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 87 conjunts are in the unsatisfiable core [2021-01-07 05:07:26,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:26,428 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:26,429 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:07:26,430 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:26,454 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:07:26,456 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:26,456 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:07:27,690 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 91 proven. 277 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-01-07 05:07:27,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:27,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 44 [2021-01-07 05:07:27,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964338540] [2021-01-07 05:07:27,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-01-07 05:07:27,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:27,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-01-07 05:07:27,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1774, Unknown=0, NotChecked=0, Total=1980 [2021-01-07 05:07:27,692 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand 45 states. [2021-01-07 05:07:30,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:30,441 INFO L93 Difference]: Finished difference Result 154 states and 156 transitions. [2021-01-07 05:07:30,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-07 05:07:30,442 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 143 [2021-01-07 05:07:30,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:30,443 INFO L225 Difference]: With dead ends: 154 [2021-01-07 05:07:30,444 INFO L226 Difference]: Without dead ends: 154 [2021-01-07 05:07:30,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=570, Invalid=2852, Unknown=0, NotChecked=0, Total=3422 [2021-01-07 05:07:30,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-01-07 05:07:30,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2021-01-07 05:07:30,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2021-01-07 05:07:30,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 155 transitions. [2021-01-07 05:07:30,448 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 155 transitions. Word has length 143 [2021-01-07 05:07:30,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:30,448 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 155 transitions. [2021-01-07 05:07:30,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2021-01-07 05:07:30,449 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 155 transitions. [2021-01-07 05:07:30,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-01-07 05:07:30,449 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:30,450 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:30,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:30,665 INFO L429 AbstractCegarLoop]: === Iteration 52 === [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 05:07:30,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:30,666 INFO L82 PathProgramCache]: Analyzing trace with hash 361100393, now seen corresponding path program 15 times [2021-01-07 05:07:30,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:30,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877539717] [2021-01-07 05:07:30,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:31,680 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 25 proven. 392 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-01-07 05:07:31,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877539717] [2021-01-07 05:07:31,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971316547] [2021-01-07 05:07:31,680 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 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:33,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-07 05:07:33,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:33,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 106 conjunts are in the unsatisfiable core [2021-01-07 05:07:33,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:33,338 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 05:07:33,340 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:33,346 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:33,347 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:33,348 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-07 05:07:34,085 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 05:07:34,087 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:34,101 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:34,104 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 05:07:34,105 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2021-01-07 05:07:34,226 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 05:07:34,228 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:34,243 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:34,245 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 05:07:34,246 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:35, output treesize:31 [2021-01-07 05:07:36,671 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:36,672 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2021-01-07 05:07:36,675 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:07:36,695 INFO L625 ElimStorePlain]: treesize reduction 5, result has 73.7 percent of original size [2021-01-07 05:07:36,699 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 05:07:36,699 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:38, output treesize:3 [2021-01-07 05:07:36,832 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 25 proven. 392 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-01-07 05:07:36,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:36,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 49 [2021-01-07 05:07:36,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203218747] [2021-01-07 05:07:36,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-01-07 05:07:36,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:36,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-01-07 05:07:36,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=2232, Unknown=0, NotChecked=0, Total=2352 [2021-01-07 05:07:36,835 INFO L87 Difference]: Start difference. First operand 153 states and 155 transitions. Second operand 49 states. [2021-01-07 05:07:43,567 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:07:47,859 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:07:52,194 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:07:54,595 WARN L197 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:07:59,700 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:08:04,047 WARN L197 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:08:08,259 WARN L197 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-01-07 05:08:08,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:08,283 INFO L93 Difference]: Finished difference Result 268 states and 271 transitions. [2021-01-07 05:08:08,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-07 05:08:08,284 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 149 [2021-01-07 05:08:08,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:08,285 INFO L225 Difference]: With dead ends: 268 [2021-01-07 05:08:08,286 INFO L226 Difference]: Without dead ends: 160 [2021-01-07 05:08:08,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 31.6s TimeCoverageRelationStatistics Valid=326, Invalid=3834, Unknown=0, NotChecked=0, Total=4160 [2021-01-07 05:08:08,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-01-07 05:08:08,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 157. [2021-01-07 05:08:08,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2021-01-07 05:08:08,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 159 transitions. [2021-01-07 05:08:08,291 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 159 transitions. Word has length 149 [2021-01-07 05:08:08,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:08,291 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 159 transitions. [2021-01-07 05:08:08,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2021-01-07 05:08:08,291 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 159 transitions. [2021-01-07 05:08:08,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-01-07 05:08:08,292 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:08,292 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:08,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:08,494 INFO L429 AbstractCegarLoop]: === Iteration 53 === [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 05:08:08,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:08,495 INFO L82 PathProgramCache]: Analyzing trace with hash 545332588, now seen corresponding path program 16 times [2021-01-07 05:08:08,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:08,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387689311] [2021-01-07 05:08:08,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:09,328 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 91 proven. 359 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-01-07 05:08:09,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387689311] [2021-01-07 05:08:09,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929892791] [2021-01-07 05:08:09,329 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 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:09,679 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:08:09,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:09,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 92 conjunts are in the unsatisfiable core [2021-01-07 05:08:09,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:10,458 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 120 proven. 330 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-01-07 05:08:10,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:10,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 37 [2021-01-07 05:08:10,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9977861] [2021-01-07 05:08:10,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-01-07 05:08:10,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:10,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-01-07 05:08:10,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1219, Unknown=0, NotChecked=0, Total=1406 [2021-01-07 05:08:10,460 INFO L87 Difference]: Start difference. First operand 157 states and 159 transitions. Second operand 38 states. [2021-01-07 05:08:12,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:12,561 INFO L93 Difference]: Finished difference Result 167 states and 169 transitions. [2021-01-07 05:08:12,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-07 05:08:12,563 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 153 [2021-01-07 05:08:12,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:12,565 INFO L225 Difference]: With dead ends: 167 [2021-01-07 05:08:12,565 INFO L226 Difference]: Without dead ends: 167 [2021-01-07 05:08:12,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=550, Invalid=2102, Unknown=0, NotChecked=0, Total=2652 [2021-01-07 05:08:12,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-01-07 05:08:12,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 163. [2021-01-07 05:08:12,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-01-07 05:08:12,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 165 transitions. [2021-01-07 05:08:12,569 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 165 transitions. Word has length 153 [2021-01-07 05:08:12,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:12,570 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 165 transitions. [2021-01-07 05:08:12,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2021-01-07 05:08:12,570 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 165 transitions. [2021-01-07 05:08:12,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-01-07 05:08:12,571 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:12,571 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:12,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-01-07 05:08:12,784 INFO L429 AbstractCegarLoop]: === Iteration 54 === [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 05:08:12,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:12,785 INFO L82 PathProgramCache]: Analyzing trace with hash 78607245, now seen corresponding path program 11 times [2021-01-07 05:08:12,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:12,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083953601] [2021-01-07 05:08:12,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 43 proven. 545 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:14,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083953601] [2021-01-07 05:08:14,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704251970] [2021-01-07 05:08:14,873 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 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:16,759 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-01-07 05:08:16,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:16,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 201 conjunts are in the unsatisfiable core [2021-01-07 05:08:16,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:18,148 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 05:08:18,149 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:18,157 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:18,158 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 05:08:18,158 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:08:18,925 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 05:08:18,926 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:18,928 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:18,928 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 05:08:18,929 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 05:08:18,979 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 43 proven. 544 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:08:18,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:18,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 36] total 61 [2021-01-07 05:08:18,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214146732] [2021-01-07 05:08:18,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-01-07 05:08:18,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:18,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-01-07 05:08:18,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=3492, Unknown=0, NotChecked=0, Total=3660 [2021-01-07 05:08:18,981 INFO L87 Difference]: Start difference. First operand 163 states and 165 transitions. Second operand 61 states. [2021-01-07 05:08:27,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:27,121 INFO L93 Difference]: Finished difference Result 247 states and 249 transitions. [2021-01-07 05:08:27,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-01-07 05:08:27,122 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 155 [2021-01-07 05:08:27,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:27,124 INFO L225 Difference]: With dead ends: 247 [2021-01-07 05:08:27,124 INFO L226 Difference]: Without dead ends: 173 [2021-01-07 05:08:27,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1439 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=655, Invalid=8275, Unknown=0, NotChecked=0, Total=8930 [2021-01-07 05:08:27,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-01-07 05:08:27,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2021-01-07 05:08:27,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2021-01-07 05:08:27,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 169 transitions. [2021-01-07 05:08:27,129 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 169 transitions. Word has length 155 [2021-01-07 05:08:27,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:27,130 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 169 transitions. [2021-01-07 05:08:27,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2021-01-07 05:08:27,130 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 169 transitions. [2021-01-07 05:08:27,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-01-07 05:08:27,131 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:27,131 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:27,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:27,337 INFO L429 AbstractCegarLoop]: === Iteration 55 === [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 05:08:27,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:27,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1903115888, now seen corresponding path program 12 times [2021-01-07 05:08:27,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:27,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268801643] [2021-01-07 05:08:27,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:28,211 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 91 proven. 377 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-01-07 05:08:28,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268801643] [2021-01-07 05:08:28,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400460830] [2021-01-07 05:08:28,212 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 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:30,136 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-01-07 05:08:30,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:30,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 82 conjunts are in the unsatisfiable core [2021-01-07 05:08:30,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:30,176 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:30,176 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:08:30,178 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:30,204 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:08:30,207 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 05:08:30,207 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:08:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 120 proven. 348 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-01-07 05:08:31,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:31,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 48 [2021-01-07 05:08:31,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327708884] [2021-01-07 05:08:31,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-01-07 05:08:31,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:31,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-01-07 05:08:31,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=2069, Unknown=0, NotChecked=0, Total=2352 [2021-01-07 05:08:31,703 INFO L87 Difference]: Start difference. First operand 167 states and 169 transitions. Second operand 49 states.