/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_cstrspn-alloca-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:04:52,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:04:52,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:04:52,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:04:52,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:04:52,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:04:52,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:04:52,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:04:52,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:04:52,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:04:52,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:04:52,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:04:52,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:04:52,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:04:52,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:04:52,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:04:52,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:04:52,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:04:52,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:04:52,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:04:52,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:04:52,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:04:52,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:04:52,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:04:52,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:04:52,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:04:52,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:04:52,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:04:52,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:04:52,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:04:52,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:04:52,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:04:52,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:04:52,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:04:52,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:04:52,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:04:52,352 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 05:04:52,380 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:04:52,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:04:52,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:04:52,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:04:52,383 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:04:52,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:04:52,384 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:04:52,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:04:52,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:04:52,385 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:04:52,385 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:04:52,385 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:04:52,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:04:52,386 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:04:52,386 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:04:52,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:04:52,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:04:52,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:04:52,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:04:52,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:04:52,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:04:52,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:04:52,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:04:52,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:04:52,389 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:04:52,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:04:52,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:04:52,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:04:52,849 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:04:52,850 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:04:52,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstrspn-alloca-2.i [2021-01-07 05:04:52,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/90e36a77b/25fe7e29b3864922a8f16ab598eeef07/FLAG77ff5be26 [2021-01-07 05:04:53,703 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:04:53,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrspn-alloca-2.i [2021-01-07 05:04:53,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/90e36a77b/25fe7e29b3864922a8f16ab598eeef07/FLAG77ff5be26 [2021-01-07 05:04:53,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/90e36a77b/25fe7e29b3864922a8f16ab598eeef07 [2021-01-07 05:04:53,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:04:53,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:04:53,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:04:53,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:04:53,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:04:53,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:04:53" (1/1) ... [2021-01-07 05:04:53,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577643b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:53, skipping insertion in model container [2021-01-07 05:04:53,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:04:53" (1/1) ... [2021-01-07 05:04:53,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:04:53,838 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~spanp~0,] left hand side expression in assignment: lhs: VariableLHS[~sc~0,] left hand side expression in assignment: lhs: VariableLHS[~length1~0,] left hand side expression in assignment: lhs: VariableLHS[~length2~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString1~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString1~0,],offset],IdentifierExpression[~i~0,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString2~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString2~0,],offset],IdentifierExpression[~i~1,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString1~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString1~0,],offset],BinaryExpression[ARITHMINUS,IdentifierExpression[~length1~0,],IntegerLiteral[1]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString2~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString2~0,],offset],BinaryExpression[ARITHMINUS,IdentifierExpression[~length2~0,],IntegerLiteral[1]]]]] [2021-01-07 05:04:54,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:04:54,327 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~spanp~0,] left hand side expression in assignment: lhs: VariableLHS[~sc~0,] left hand side expression in assignment: lhs: VariableLHS[~length1~0,] left hand side expression in assignment: lhs: VariableLHS[~length2~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString1~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString1~0,],offset],IdentifierExpression[~i~0,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString2~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString2~0,],offset],IdentifierExpression[~i~1,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString1~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString1~0,],offset],BinaryExpression[ARITHMINUS,IdentifierExpression[~length1~0,],IntegerLiteral[1]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString2~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString2~0,],offset],BinaryExpression[ARITHMINUS,IdentifierExpression[~length2~0,],IntegerLiteral[1]]]]] [2021-01-07 05:04:54,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:04:54,467 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:04:54,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:54 WrapperNode [2021-01-07 05:04:54,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:04:54,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:04:54,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:04:54,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:04:54,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:54" (1/1) ... [2021-01-07 05:04:54,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:54" (1/1) ... [2021-01-07 05:04:54,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:04:54,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:04:54,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:04:54,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:04:54,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:54" (1/1) ... [2021-01-07 05:04:54,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:54" (1/1) ... [2021-01-07 05:04:54,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:54" (1/1) ... [2021-01-07 05:04:54,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:54" (1/1) ... [2021-01-07 05:04:54,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:54" (1/1) ... [2021-01-07 05:04:54,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:54" (1/1) ... [2021-01-07 05:04:54,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:54" (1/1) ... [2021-01-07 05:04:54,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:04:54,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:04:54,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:04:54,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:04:54,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:54" (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 05:04:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:04:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:04:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:04:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:04:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:04:54,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:04:55,199 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:04:55,199 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-01-07 05:04:55,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:04:55 BoogieIcfgContainer [2021-01-07 05:04:55,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:04:55,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:04:55,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:04:55,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:04:55,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:04:53" (1/3) ... [2021-01-07 05:04:55,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458e3d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:04:55, skipping insertion in model container [2021-01-07 05:04:55,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:54" (2/3) ... [2021-01-07 05:04:55,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458e3d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:04:55, skipping insertion in model container [2021-01-07 05:04:55,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:04:55" (3/3) ... [2021-01-07 05:04:55,225 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cstrspn-alloca-2.i [2021-01-07 05:04:55,241 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:04:55,253 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2021-01-07 05:04:55,301 INFO L253 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-01-07 05:04:55,361 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:04:55,361 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:04:55,361 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:04:55,362 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:04:55,362 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:04:55,362 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:04:55,362 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:04:55,362 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:04:55,387 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2021-01-07 05:04:55,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:04:55,394 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:55,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:55,396 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:55,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:55,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2021-01-07 05:04:55,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:55,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861736758] [2021-01-07 05:04:55,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:55,706 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 05:04:55,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861736758] [2021-01-07 05:04:55,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:55,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:04:55,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815605542] [2021-01-07 05:04:55,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:04:55,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:55,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:04:55,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:04:55,736 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 4 states. [2021-01-07 05:04:55,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:55,791 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2021-01-07 05:04:55,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:04:55,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-01-07 05:04:55,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:55,815 INFO L225 Difference]: With dead ends: 78 [2021-01-07 05:04:55,816 INFO L226 Difference]: Without dead ends: 74 [2021-01-07 05:04:55,819 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 05:04:55,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-01-07 05:04:55,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 44. [2021-01-07 05:04:55,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-01-07 05:04:55,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2021-01-07 05:04:55,869 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 7 [2021-01-07 05:04:55,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:55,871 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2021-01-07 05:04:55,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:04:55,871 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2021-01-07 05:04:55,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:04:55,871 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:55,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:55,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:04:55,872 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:55,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:55,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1806876138, now seen corresponding path program 1 times [2021-01-07 05:04:55,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:55,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419654898] [2021-01-07 05:04:55,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:55,941 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 05:04:55,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419654898] [2021-01-07 05:04:55,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:55,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:04:55,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607677214] [2021-01-07 05:04:55,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:04:55,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:55,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:04:55,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:04:55,945 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 3 states. [2021-01-07 05:04:55,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:55,982 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2021-01-07 05:04:55,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:04:55,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-01-07 05:04:55,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:55,984 INFO L225 Difference]: With dead ends: 42 [2021-01-07 05:04:55,984 INFO L226 Difference]: Without dead ends: 42 [2021-01-07 05:04:55,985 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 05:04:55,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-01-07 05:04:55,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-01-07 05:04:55,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-01-07 05:04:55,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2021-01-07 05:04:55,990 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 7 [2021-01-07 05:04:55,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:55,991 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2021-01-07 05:04:55,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:04:55,991 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2021-01-07 05:04:55,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:04:55,992 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:55,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:55,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:04:55,992 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:55,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:55,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2021-01-07 05:04:55,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:55,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120396438] [2021-01-07 05:04:55,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:56,078 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 05:04:56,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120396438] [2021-01-07 05:04:56,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:56,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:04:56,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915558083] [2021-01-07 05:04:56,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:04:56,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:56,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:04:56,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:04:56,081 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 4 states. [2021-01-07 05:04:56,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:56,183 INFO L93 Difference]: Finished difference Result 75 states and 84 transitions. [2021-01-07 05:04:56,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:04:56,184 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-01-07 05:04:56,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:56,185 INFO L225 Difference]: With dead ends: 75 [2021-01-07 05:04:56,186 INFO L226 Difference]: Without dead ends: 75 [2021-01-07 05:04:56,186 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 05:04:56,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-01-07 05:04:56,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 44. [2021-01-07 05:04:56,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-01-07 05:04:56,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2021-01-07 05:04:56,193 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 7 [2021-01-07 05:04:56,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:56,193 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2021-01-07 05:04:56,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:04:56,194 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2021-01-07 05:04:56,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:04:56,194 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:56,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:56,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-07 05:04:56,195 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:56,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:56,196 INFO L82 PathProgramCache]: Analyzing trace with hash -533876960, now seen corresponding path program 1 times [2021-01-07 05:04:56,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:56,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332734042] [2021-01-07 05:04:56,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:56,260 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 05:04:56,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332734042] [2021-01-07 05:04:56,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:56,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:04:56,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551864919] [2021-01-07 05:04:56,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:04:56,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:56,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:04:56,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:04:56,264 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 4 states. [2021-01-07 05:04:56,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:56,322 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2021-01-07 05:04:56,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:04:56,325 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-07 05:04:56,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:56,326 INFO L225 Difference]: With dead ends: 43 [2021-01-07 05:04:56,328 INFO L226 Difference]: Without dead ends: 43 [2021-01-07 05:04:56,328 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 05:04:56,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-01-07 05:04:56,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-01-07 05:04:56,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-01-07 05:04:56,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2021-01-07 05:04:56,334 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 9 [2021-01-07 05:04:56,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:56,334 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2021-01-07 05:04:56,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:04:56,334 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2021-01-07 05:04:56,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:04:56,335 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:56,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:56,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-07 05:04:56,336 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:56,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:56,338 INFO L82 PathProgramCache]: Analyzing trace with hash -533876908, now seen corresponding path program 1 times [2021-01-07 05:04:56,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:56,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778336223] [2021-01-07 05:04:56,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:56,431 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 05:04:56,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778336223] [2021-01-07 05:04:56,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:56,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:04:56,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494670237] [2021-01-07 05:04:56,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:04:56,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:56,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:04:56,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:04:56,434 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 4 states. [2021-01-07 05:04:56,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:56,466 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2021-01-07 05:04:56,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:04:56,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-07 05:04:56,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:56,468 INFO L225 Difference]: With dead ends: 76 [2021-01-07 05:04:56,468 INFO L226 Difference]: Without dead ends: 76 [2021-01-07 05:04:56,472 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 05:04:56,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-01-07 05:04:56,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 54. [2021-01-07 05:04:56,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-07 05:04:56,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2021-01-07 05:04:56,485 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 9 [2021-01-07 05:04:56,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:56,485 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2021-01-07 05:04:56,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:04:56,485 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2021-01-07 05:04:56,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:04:56,487 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:56,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:56,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-07 05:04:56,488 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:56,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:56,488 INFO L82 PathProgramCache]: Analyzing trace with hash -476618606, now seen corresponding path program 1 times [2021-01-07 05:04:56,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:56,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729659526] [2021-01-07 05:04:56,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:56,573 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 05:04:56,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729659526] [2021-01-07 05:04:56,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:56,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:04:56,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449294152] [2021-01-07 05:04:56,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:04:56,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:56,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:04:56,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:04:56,575 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 3 states. [2021-01-07 05:04:56,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:56,616 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2021-01-07 05:04:56,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:04:56,617 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2021-01-07 05:04:56,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:56,618 INFO L225 Difference]: With dead ends: 52 [2021-01-07 05:04:56,618 INFO L226 Difference]: Without dead ends: 52 [2021-01-07 05:04:56,620 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 05:04:56,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-07 05:04:56,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-01-07 05:04:56,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-01-07 05:04:56,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2021-01-07 05:04:56,631 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 9 [2021-01-07 05:04:56,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:56,632 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2021-01-07 05:04:56,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:04:56,632 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2021-01-07 05:04:56,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:04:56,632 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:56,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:56,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-07 05:04:56,633 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:56,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:56,634 INFO L82 PathProgramCache]: Analyzing trace with hash -476618605, now seen corresponding path program 1 times [2021-01-07 05:04:56,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:56,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202574586] [2021-01-07 05:04:56,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:56,733 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 05:04:56,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202574586] [2021-01-07 05:04:56,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:56,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:04:56,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721455090] [2021-01-07 05:04:56,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:04:56,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:56,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:04:56,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:04:56,740 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 5 states. [2021-01-07 05:04:56,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:56,832 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2021-01-07 05:04:56,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:04:56,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2021-01-07 05:04:56,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:56,833 INFO L225 Difference]: With dead ends: 76 [2021-01-07 05:04:56,834 INFO L226 Difference]: Without dead ends: 76 [2021-01-07 05:04:56,834 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 05:04:56,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-01-07 05:04:56,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 54. [2021-01-07 05:04:56,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-07 05:04:56,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2021-01-07 05:04:56,839 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 9 [2021-01-07 05:04:56,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:56,840 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2021-01-07 05:04:56,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:04:56,840 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2021-01-07 05:04:56,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-07 05:04:56,840 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:56,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:56,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-07 05:04:56,841 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:56,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:56,842 INFO L82 PathProgramCache]: Analyzing trace with hash 629683418, now seen corresponding path program 1 times [2021-01-07 05:04:56,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:56,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662923421] [2021-01-07 05:04:56,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:56,884 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 05:04:56,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662923421] [2021-01-07 05:04:56,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:56,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:04:56,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576573656] [2021-01-07 05:04:56,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:04:56,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:56,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:04:56,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:04:56,886 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand 4 states. [2021-01-07 05:04:56,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:56,913 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2021-01-07 05:04:56,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:04:56,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-01-07 05:04:56,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:56,914 INFO L225 Difference]: With dead ends: 53 [2021-01-07 05:04:56,914 INFO L226 Difference]: Without dead ends: 53 [2021-01-07 05:04:56,915 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 05:04:56,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-01-07 05:04:56,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-01-07 05:04:56,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-07 05:04:56,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2021-01-07 05:04:56,919 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 10 [2021-01-07 05:04:56,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:56,919 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2021-01-07 05:04:56,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:04:56,920 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2021-01-07 05:04:56,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-07 05:04:56,920 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:56,921 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:56,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-07 05:04:56,921 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:56,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:56,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2021-01-07 05:04:56,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:56,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352922321] [2021-01-07 05:04:56,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:57,011 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 05:04:57,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352922321] [2021-01-07 05:04:57,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786719434] [2021-01-07 05:04:57,014 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 05:04:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:57,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-07 05:04:57,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:57,155 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_16|], 1=[|v_#valid_24|]} [2021-01-07 05:04:57,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:04:57,179 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 05:04:57,181 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:57,191 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:57,199 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 05:04:57,206 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:57,215 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:57,218 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 05:04:57,219 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2021-01-07 05:04:57,256 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 05:04:57,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:57,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-01-07 05:04:57,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941907157] [2021-01-07 05:04:57,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:04:57,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:57,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:04:57,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:04:57,259 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand 6 states. [2021-01-07 05:04:57,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:57,352 INFO L93 Difference]: Finished difference Result 85 states and 98 transitions. [2021-01-07 05:04:57,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:04:57,353 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-01-07 05:04:57,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:57,354 INFO L225 Difference]: With dead ends: 85 [2021-01-07 05:04:57,354 INFO L226 Difference]: Without dead ends: 85 [2021-01-07 05:04:57,354 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 05:04:57,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-01-07 05:04:57,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 48. [2021-01-07 05:04:57,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-01-07 05:04:57,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2021-01-07 05:04:57,358 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 11 [2021-01-07 05:04:57,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:57,359 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2021-01-07 05:04:57,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:04:57,359 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2021-01-07 05:04:57,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-07 05:04:57,360 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:57,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:57,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-07 05:04:57,576 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:57,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:57,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1518446205, now seen corresponding path program 1 times [2021-01-07 05:04:57,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:57,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953508188] [2021-01-07 05:04:57,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:57,635 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 05:04:57,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953508188] [2021-01-07 05:04:57,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:57,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:04:57,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001001111] [2021-01-07 05:04:57,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:04:57,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:57,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:04:57,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:04:57,638 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 5 states. [2021-01-07 05:04:57,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:57,706 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2021-01-07 05:04:57,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:04:57,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-01-07 05:04:57,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:57,707 INFO L225 Difference]: With dead ends: 47 [2021-01-07 05:04:57,707 INFO L226 Difference]: Without dead ends: 47 [2021-01-07 05:04:57,708 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 05:04:57,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-01-07 05:04:57,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-01-07 05:04:57,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-01-07 05:04:57,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2021-01-07 05:04:57,711 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 13 [2021-01-07 05:04:57,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:57,712 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2021-01-07 05:04:57,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:04:57,712 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2021-01-07 05:04:57,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-07 05:04:57,713 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:57,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:57,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-07 05:04:57,713 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:57,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:57,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1518446204, now seen corresponding path program 1 times [2021-01-07 05:04:57,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:57,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182765772] [2021-01-07 05:04:57,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:57,784 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 05:04:57,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182765772] [2021-01-07 05:04:57,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:57,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-07 05:04:57,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382772991] [2021-01-07 05:04:57,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:04:57,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:57,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:04:57,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:04:57,786 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 7 states. [2021-01-07 05:04:57,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:57,874 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2021-01-07 05:04:57,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:04:57,875 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2021-01-07 05:04:57,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:57,876 INFO L225 Difference]: With dead ends: 50 [2021-01-07 05:04:57,876 INFO L226 Difference]: Without dead ends: 50 [2021-01-07 05:04:57,877 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 05:04:57,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-07 05:04:57,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2021-01-07 05:04:57,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-01-07 05:04:57,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2021-01-07 05:04:57,880 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 13 [2021-01-07 05:04:57,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:57,880 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2021-01-07 05:04:57,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:04:57,881 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2021-01-07 05:04:57,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-07 05:04:57,881 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:57,882 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:57,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-07 05:04:57,882 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:57,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:57,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1862804906, now seen corresponding path program 1 times [2021-01-07 05:04:57,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:57,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957449791] [2021-01-07 05:04:57,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:57,948 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 05:04:57,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957449791] [2021-01-07 05:04:57,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730948767] [2021-01-07 05:04:57,949 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 05:04:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:58,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-07 05:04:58,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:58,056 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:58,057 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 05:04:58,062 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:58,087 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:04:58,091 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 05:04:58,091 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:04:58,151 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 05:04:58,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:58,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-01-07 05:04:58,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565296294] [2021-01-07 05:04:58,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:04:58,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:58,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:04:58,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:04:58,156 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 7 states. [2021-01-07 05:04:58,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:58,245 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2021-01-07 05:04:58,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:04:58,246 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2021-01-07 05:04:58,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:58,246 INFO L225 Difference]: With dead ends: 70 [2021-01-07 05:04:58,247 INFO L226 Difference]: Without dead ends: 70 [2021-01-07 05:04:58,247 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 05:04:58,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-01-07 05:04:58,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 46. [2021-01-07 05:04:58,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-07 05:04:58,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2021-01-07 05:04:58,250 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 13 [2021-01-07 05:04:58,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:58,250 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2021-01-07 05:04:58,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:04:58,251 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2021-01-07 05:04:58,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-07 05:04:58,251 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:58,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:58,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-07 05:04:58,465 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:58,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:58,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1435298785, now seen corresponding path program 1 times [2021-01-07 05:04:58,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:58,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078653505] [2021-01-07 05:04:58,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:58,504 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 05:04:58,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078653505] [2021-01-07 05:04:58,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:58,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:04:58,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892093644] [2021-01-07 05:04:58,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:04:58,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:58,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:04:58,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:04:58,506 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 6 states. [2021-01-07 05:04:58,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:58,579 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2021-01-07 05:04:58,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:04:58,579 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-01-07 05:04:58,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:58,580 INFO L225 Difference]: With dead ends: 46 [2021-01-07 05:04:58,580 INFO L226 Difference]: Without dead ends: 46 [2021-01-07 05:04:58,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:04:58,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-01-07 05:04:58,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-01-07 05:04:58,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-07 05:04:58,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2021-01-07 05:04:58,583 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 16 [2021-01-07 05:04:58,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:58,583 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2021-01-07 05:04:58,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:04:58,584 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2021-01-07 05:04:58,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-07 05:04:58,584 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:58,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:58,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-07 05:04:58,585 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:58,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:58,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1435298784, now seen corresponding path program 1 times [2021-01-07 05:04:58,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:58,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787100471] [2021-01-07 05:04:58,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:58,656 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 05:04:58,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787100471] [2021-01-07 05:04:58,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:58,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-07 05:04:58,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906073295] [2021-01-07 05:04:58,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:04:58,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:58,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:04:58,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:04:58,659 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 8 states. [2021-01-07 05:04:58,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:58,769 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2021-01-07 05:04:58,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:04:58,769 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2021-01-07 05:04:58,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:58,770 INFO L225 Difference]: With dead ends: 49 [2021-01-07 05:04:58,770 INFO L226 Difference]: Without dead ends: 49 [2021-01-07 05:04:58,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:04:58,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-01-07 05:04:58,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2021-01-07 05:04:58,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-01-07 05:04:58,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2021-01-07 05:04:58,773 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 16 [2021-01-07 05:04:58,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:58,773 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2021-01-07 05:04:58,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:04:58,773 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2021-01-07 05:04:58,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-07 05:04:58,774 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:58,774 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 05:04:58,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-07 05:04:58,775 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:58,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:58,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1033258167, now seen corresponding path program 1 times [2021-01-07 05:04:58,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:58,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903343212] [2021-01-07 05:04:58,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:58,843 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 05:04:58,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903343212] [2021-01-07 05:04:58,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:58,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:04:58,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362453780] [2021-01-07 05:04:58,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:04:58,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:58,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:04:58,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:04:58,846 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 4 states. [2021-01-07 05:04:58,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:58,865 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2021-01-07 05:04:58,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:04:58,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2021-01-07 05:04:58,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:58,866 INFO L225 Difference]: With dead ends: 46 [2021-01-07 05:04:58,866 INFO L226 Difference]: Without dead ends: 43 [2021-01-07 05:04:58,866 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 05:04:58,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-01-07 05:04:58,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-01-07 05:04:58,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-01-07 05:04:58,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2021-01-07 05:04:58,868 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 21 [2021-01-07 05:04:58,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:58,869 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2021-01-07 05:04:58,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:04:58,869 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2021-01-07 05:04:58,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-07 05:04:58,870 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:58,870 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:58,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-07 05:04:58,870 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:58,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:58,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1033312273, now seen corresponding path program 1 times [2021-01-07 05:04:58,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:58,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423185986] [2021-01-07 05:04:58,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:58,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423185986] [2021-01-07 05:04:58,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:58,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-01-07 05:04:58,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330945016] [2021-01-07 05:04:58,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-07 05:04:58,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:58,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-07 05:04:58,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:04:58,995 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 10 states. [2021-01-07 05:04:59,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:59,158 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2021-01-07 05:04:59,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:04:59,158 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2021-01-07 05:04:59,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:59,159 INFO L225 Difference]: With dead ends: 53 [2021-01-07 05:04:59,159 INFO L226 Difference]: Without dead ends: 34 [2021-01-07 05:04:59,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:04:59,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-01-07 05:04:59,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-01-07 05:04:59,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-01-07 05:04:59,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2021-01-07 05:04:59,163 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 21 [2021-01-07 05:04:59,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:59,163 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2021-01-07 05:04:59,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-07 05:04:59,164 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2021-01-07 05:04:59,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-07 05:04:59,164 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:59,165 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:59,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-07 05:04:59,165 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:59,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:59,166 INFO L82 PathProgramCache]: Analyzing trace with hash -960832433, now seen corresponding path program 1 times [2021-01-07 05:04:59,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:59,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437103042] [2021-01-07 05:04:59,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:59,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:59,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437103042] [2021-01-07 05:04:59,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:59,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-01-07 05:04:59,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379061222] [2021-01-07 05:04:59,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-07 05:04:59,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:59,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-07 05:04:59,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:04:59,343 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 12 states. [2021-01-07 05:04:59,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:59,519 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2021-01-07 05:04:59,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-07 05:04:59,519 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2021-01-07 05:04:59,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:59,520 INFO L225 Difference]: With dead ends: 48 [2021-01-07 05:04:59,520 INFO L226 Difference]: Without dead ends: 38 [2021-01-07 05:04:59,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-01-07 05:04:59,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-01-07 05:04:59,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2021-01-07 05:04:59,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-07 05:04:59,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-01-07 05:04:59,522 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 21 [2021-01-07 05:04:59,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:59,522 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-01-07 05:04:59,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-07 05:04:59,523 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-01-07 05:04:59,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-07 05:04:59,523 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:59,523 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:59,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-07 05:04:59,524 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:04:59,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:59,524 INFO L82 PathProgramCache]: Analyzing trace with hash -276078, now seen corresponding path program 1 times [2021-01-07 05:04:59,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:59,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294335502] [2021-01-07 05:04:59,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:59,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:59,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294335502] [2021-01-07 05:04:59,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506512292] [2021-01-07 05:04:59,658 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 05:04:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:59,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-07 05:04:59,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:59,748 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:59,748 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 05:04:59,750 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:59,764 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:04:59,766 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 05:04:59,767 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:04:59,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:59,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:59,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 19 [2021-01-07 05:04:59,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337299227] [2021-01-07 05:04:59,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-07 05:04:59,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:59,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-07 05:04:59,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:04:59,939 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 20 states. [2021-01-07 05:05:00,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:00,308 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2021-01-07 05:05:00,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:05:00,309 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 25 [2021-01-07 05:05:00,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:00,309 INFO L225 Difference]: With dead ends: 49 [2021-01-07 05:05:00,309 INFO L226 Difference]: Without dead ends: 49 [2021-01-07 05:05:00,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2021-01-07 05:05:00,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-01-07 05:05:00,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 40. [2021-01-07 05:05:00,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-01-07 05:05:00,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2021-01-07 05:05:00,312 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 25 [2021-01-07 05:05:00,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:00,312 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2021-01-07 05:05:00,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-07 05:05:00,312 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2021-01-07 05:05:00,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-07 05:05:00,313 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:00,313 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:00,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-07 05:05:00,521 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:05:00,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:00,522 INFO L82 PathProgramCache]: Analyzing trace with hash -278256, now seen corresponding path program 1 times [2021-01-07 05:05:00,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:00,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038358480] [2021-01-07 05:05:00,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:00,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:00,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038358480] [2021-01-07 05:05:00,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:05:00,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-01-07 05:05:00,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197070713] [2021-01-07 05:05:00,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-07 05:05:00,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:00,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-07 05:05:00,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:05:00,645 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 10 states. [2021-01-07 05:05:00,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:00,842 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2021-01-07 05:05:00,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:05:00,842 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2021-01-07 05:05:00,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:00,844 INFO L225 Difference]: With dead ends: 65 [2021-01-07 05:05:00,845 INFO L226 Difference]: Without dead ends: 65 [2021-01-07 05:05:00,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:05:00,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-01-07 05:05:00,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2021-01-07 05:05:00,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-01-07 05:05:00,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2021-01-07 05:05:00,848 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 25 [2021-01-07 05:05:00,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:00,848 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 71 transitions. [2021-01-07 05:05:00,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-07 05:05:00,848 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2021-01-07 05:05:00,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-07 05:05:00,849 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:00,849 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:00,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-01-07 05:05:00,850 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:05:00,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:00,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1805716590, now seen corresponding path program 1 times [2021-01-07 05:05:00,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:00,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401650603] [2021-01-07 05:05:00,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:01,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401650603] [2021-01-07 05:05:01,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:05:01,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-01-07 05:05:01,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200010481] [2021-01-07 05:05:01,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:05:01,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:01,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:05:01,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:05:01,088 INFO L87 Difference]: Start difference. First operand 64 states and 71 transitions. Second operand 11 states. [2021-01-07 05:05:01,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:01,321 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2021-01-07 05:05:01,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-07 05:05:01,322 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2021-01-07 05:05:01,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:01,323 INFO L225 Difference]: With dead ends: 93 [2021-01-07 05:05:01,323 INFO L226 Difference]: Without dead ends: 93 [2021-01-07 05:05:01,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-01-07 05:05:01,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-01-07 05:05:01,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 65. [2021-01-07 05:05:01,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-07 05:05:01,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2021-01-07 05:05:01,326 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 25 [2021-01-07 05:05:01,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:01,326 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2021-01-07 05:05:01,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-07 05:05:01,326 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2021-01-07 05:05:01,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-07 05:05:01,327 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:01,327 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:01,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-01-07 05:05:01,327 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:05:01,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:01,328 INFO L82 PathProgramCache]: Analyzing trace with hash -2113727723, now seen corresponding path program 1 times [2021-01-07 05:05:01,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:01,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012437720] [2021-01-07 05:05:01,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:01,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:01,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012437720] [2021-01-07 05:05:01,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780330094] [2021-01-07 05:05:01,429 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 05:05:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:01,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-07 05:05:01,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:01,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:01,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:01,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-01-07 05:05:01,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779654570] [2021-01-07 05:05:01,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-07 05:05:01,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:01,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-07 05:05:01,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-01-07 05:05:01,644 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 15 states. [2021-01-07 05:05:01,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:01,938 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2021-01-07 05:05:01,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:05:01,938 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 29 [2021-01-07 05:05:01,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:01,939 INFO L225 Difference]: With dead ends: 86 [2021-01-07 05:05:01,939 INFO L226 Difference]: Without dead ends: 86 [2021-01-07 05:05:01,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:05:01,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-01-07 05:05:01,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2021-01-07 05:05:01,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-01-07 05:05:01,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2021-01-07 05:05:01,942 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 29 [2021-01-07 05:05:01,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:01,942 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions. [2021-01-07 05:05:01,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-07 05:05:01,942 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions. [2021-01-07 05:05:01,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-07 05:05:01,942 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:01,943 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:02,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:02,151 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:05:02,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:02,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1128269345, now seen corresponding path program 2 times [2021-01-07 05:05:02,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:02,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142970459] [2021-01-07 05:05:02,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:02,553 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:05:02,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142970459] [2021-01-07 05:05:02,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517803938] [2021-01-07 05:05:02,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:02,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:05:02,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:02,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 43 conjunts are in the unsatisfiable core [2021-01-07 05:05:02,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:02,641 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:02,642 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 05:05:02,644 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:02,657 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:05:02,660 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 05:05:02,661 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:05:02,751 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-07 05:05:02,752 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:02,759 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:02,761 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:02,761 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2021-01-07 05:05:03,221 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:03,221 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 22 treesize of output 22 [2021-01-07 05:05:03,223 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:05:03,233 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:03,238 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:05:03,241 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:03,242 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:35 [2021-01-07 05:05:03,504 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:05:03,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:03,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 30 [2021-01-07 05:05:03,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181508546] [2021-01-07 05:05:03,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-01-07 05:05:03,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:03,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-01-07 05:05:03,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=798, Unknown=0, NotChecked=0, Total=870 [2021-01-07 05:05:03,506 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand 30 states. [2021-01-07 05:05:04,992 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2021-01-07 05:05:06,451 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2021-01-07 05:05:06,764 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2021-01-07 05:05:07,066 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-01-07 05:05:07,546 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2021-01-07 05:05:07,891 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2021-01-07 05:05:08,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:08,342 INFO L93 Difference]: Finished difference Result 167 states and 181 transitions. [2021-01-07 05:05:08,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-01-07 05:05:08,345 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2021-01-07 05:05:08,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:08,346 INFO L225 Difference]: With dead ends: 167 [2021-01-07 05:05:08,347 INFO L226 Difference]: Without dead ends: 152 [2021-01-07 05:05:08,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=745, Invalid=3677, Unknown=0, NotChecked=0, Total=4422 [2021-01-07 05:05:08,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-01-07 05:05:08,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 100. [2021-01-07 05:05:08,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2021-01-07 05:05:08,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2021-01-07 05:05:08,352 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 30 [2021-01-07 05:05:08,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:08,353 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2021-01-07 05:05:08,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-01-07 05:05:08,353 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2021-01-07 05:05:08,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-01-07 05:05:08,354 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:08,354 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:08,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-07 05:05:08,569 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:05:08,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:08,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1037145676, now seen corresponding path program 1 times [2021-01-07 05:05:08,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:08,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112350042] [2021-01-07 05:05:08,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:08,716 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:05:08,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112350042] [2021-01-07 05:05:08,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458823395] [2021-01-07 05:05:08,717 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 05:05:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:08,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-07 05:05:08,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:08,822 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:08,823 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 05:05:08,826 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:08,838 INFO L625 ElimStorePlain]: treesize reduction 10, result has 60.0 percent of original size [2021-01-07 05:05:08,841 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 05:05:08,841 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:9, output treesize:5 [2021-01-07 05:05:09,044 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:05:09,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:09,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2021-01-07 05:05:09,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893908611] [2021-01-07 05:05:09,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-07 05:05:09,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:09,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-07 05:05:09,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:05:09,047 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand 23 states. [2021-01-07 05:05:09,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:09,478 INFO L93 Difference]: Finished difference Result 175 states and 191 transitions. [2021-01-07 05:05:09,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-07 05:05:09,479 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2021-01-07 05:05:09,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:09,480 INFO L225 Difference]: With dead ends: 175 [2021-01-07 05:05:09,480 INFO L226 Difference]: Without dead ends: 153 [2021-01-07 05:05:09,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2021-01-07 05:05:09,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-01-07 05:05:09,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 134. [2021-01-07 05:05:09,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2021-01-07 05:05:09,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 151 transitions. [2021-01-07 05:05:09,485 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 151 transitions. Word has length 35 [2021-01-07 05:05:09,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:09,486 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 151 transitions. [2021-01-07 05:05:09,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-07 05:05:09,486 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 151 transitions. [2021-01-07 05:05:09,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-07 05:05:09,486 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:09,487 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:09,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:09,701 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:05:09,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:09,702 INFO L82 PathProgramCache]: Analyzing trace with hash -988436448, now seen corresponding path program 2 times [2021-01-07 05:05:09,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:09,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942338137] [2021-01-07 05:05:09,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:10,096 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:10,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942338137] [2021-01-07 05:05:10,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192249007] [2021-01-07 05:05:10,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:10,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:05:10,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:10,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 46 conjunts are in the unsatisfiable core [2021-01-07 05:05:10,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:10,199 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 05:05:10,202 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:10,205 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:10,206 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:10,206 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-07 05:05:10,346 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 05:05:10,347 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:10,354 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:10,356 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 05:05:10,357 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2021-01-07 05:05:10,417 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 05:05:10,418 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:10,426 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:10,430 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 05:05:10,430 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:35, output treesize:31 [2021-01-07 05:05:10,783 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:10,784 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 05:05:10,785 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:05:10,798 INFO L625 ElimStorePlain]: treesize reduction 5, result has 73.7 percent of original size [2021-01-07 05:05:10,800 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 05:05:10,800 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:38, output treesize:3 [2021-01-07 05:05:10,840 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:10,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:10,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2021-01-07 05:05:10,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611456883] [2021-01-07 05:05:10,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-07 05:05:10,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:10,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-07 05:05:10,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:05:10,843 INFO L87 Difference]: Start difference. First operand 134 states and 151 transitions. Second operand 24 states. [2021-01-07 05:05:12,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:12,324 INFO L93 Difference]: Finished difference Result 226 states and 248 transitions. [2021-01-07 05:05:12,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-07 05:05:12,325 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 37 [2021-01-07 05:05:12,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:12,327 INFO L225 Difference]: With dead ends: 226 [2021-01-07 05:05:12,327 INFO L226 Difference]: Without dead ends: 197 [2021-01-07 05:05:12,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=259, Invalid=1223, Unknown=0, NotChecked=0, Total=1482 [2021-01-07 05:05:12,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-01-07 05:05:12,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 171. [2021-01-07 05:05:12,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2021-01-07 05:05:12,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 194 transitions. [2021-01-07 05:05:12,332 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 194 transitions. Word has length 37 [2021-01-07 05:05:12,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:12,333 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 194 transitions. [2021-01-07 05:05:12,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-01-07 05:05:12,333 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 194 transitions. [2021-01-07 05:05:12,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-01-07 05:05:12,333 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:12,334 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:12,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:12,535 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:05:12,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:12,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1971973557, now seen corresponding path program 3 times [2021-01-07 05:05:12,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:12,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141431236] [2021-01-07 05:05:12,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:12,749 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:05:12,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141431236] [2021-01-07 05:05:12,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126642516] [2021-01-07 05:05:12,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:12,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-07 05:05:12,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:12,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 74 conjunts are in the unsatisfiable core [2021-01-07 05:05:12,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:12,853 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 05:05:12,855 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:12,862 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:12,863 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:12,863 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-07 05:05:13,034 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 11 treesize of output 7 [2021-01-07 05:05:13,034 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:13,054 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:13,054 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:13,055 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2021-01-07 05:05:13,090 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-01-07 05:05:13,091 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:13,100 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:13,101 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 05:05:13,102 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:28 [2021-01-07 05:05:13,647 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:13,648 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 25 treesize of output 21 [2021-01-07 05:05:13,650 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:05:13,663 INFO L625 ElimStorePlain]: treesize reduction 5, result has 73.7 percent of original size [2021-01-07 05:05:13,666 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 05:05:13,666 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:35, output treesize:3 [2021-01-07 05:05:13,680 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:05:13,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:13,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 33 [2021-01-07 05:05:13,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213297666] [2021-01-07 05:05:13,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-01-07 05:05:13,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:13,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-01-07 05:05:13,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=969, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 05:05:13,683 INFO L87 Difference]: Start difference. First operand 171 states and 194 transitions. Second operand 33 states. [2021-01-07 05:05:16,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:16,164 INFO L93 Difference]: Finished difference Result 346 states and 374 transitions. [2021-01-07 05:05:16,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-07 05:05:16,164 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 39 [2021-01-07 05:05:16,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:16,168 INFO L225 Difference]: With dead ends: 346 [2021-01-07 05:05:16,168 INFO L226 Difference]: Without dead ends: 272 [2021-01-07 05:05:16,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=535, Invalid=3247, Unknown=0, NotChecked=0, Total=3782 [2021-01-07 05:05:16,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-01-07 05:05:16,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 183. [2021-01-07 05:05:16,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2021-01-07 05:05:16,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 207 transitions. [2021-01-07 05:05:16,177 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 207 transitions. Word has length 39 [2021-01-07 05:05:16,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:16,177 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 207 transitions. [2021-01-07 05:05:16,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2021-01-07 05:05:16,178 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 207 transitions. [2021-01-07 05:05:16,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-07 05:05:16,178 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:16,178 INFO L422 BasicCegarLoop]: trace histogram [3, 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 05:05:16,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-01-07 05:05:16,394 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:05:16,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:16,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1200593699, now seen corresponding path program 3 times [2021-01-07 05:05:16,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:16,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033983235] [2021-01-07 05:05:16,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:16,576 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:16,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033983235] [2021-01-07 05:05:16,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871793618] [2021-01-07 05:05:16,577 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 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 05:05:16,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-07 05:05:16,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:16,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 36 conjunts are in the unsatisfiable core [2021-01-07 05:05:16,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:16,816 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:16,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:16,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-01-07 05:05:16,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072829082] [2021-01-07 05:05:16,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-07 05:05:16,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:16,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-07 05:05:16,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:05:16,818 INFO L87 Difference]: Start difference. First operand 183 states and 207 transitions. Second operand 17 states. [2021-01-07 05:05:17,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:17,220 INFO L93 Difference]: Finished difference Result 242 states and 268 transitions. [2021-01-07 05:05:17,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:05:17,220 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41 [2021-01-07 05:05:17,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:17,222 INFO L225 Difference]: With dead ends: 242 [2021-01-07 05:05:17,222 INFO L226 Difference]: Without dead ends: 242 [2021-01-07 05:05:17,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:05:17,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-01-07 05:05:17,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 216. [2021-01-07 05:05:17,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2021-01-07 05:05:17,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 245 transitions. [2021-01-07 05:05:17,229 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 245 transitions. Word has length 41 [2021-01-07 05:05:17,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:17,230 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 245 transitions. [2021-01-07 05:05:17,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-07 05:05:17,230 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 245 transitions. [2021-01-07 05:05:17,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-07 05:05:17,230 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:17,231 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:17,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-07 05:05:17,445 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:05:17,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:17,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1860251704, now seen corresponding path program 4 times [2021-01-07 05:05:17,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:17,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115731422] [2021-01-07 05:05:17,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:17,651 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:05:17,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115731422] [2021-01-07 05:05:17,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972537893] [2021-01-07 05:05:17,652 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 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 05:05:17,711 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:05:17,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:17,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 55 conjunts are in the unsatisfiable core [2021-01-07 05:05:17,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:17,736 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:17,737 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 05:05:17,738 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:17,758 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:05:17,760 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 05:05:17,760 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:05:17,830 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-07 05:05:17,831 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:17,837 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:17,837 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:17,837 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2021-01-07 05:05:18,068 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:18,068 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 21 treesize of output 21 [2021-01-07 05:05:18,070 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:05:18,080 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:18,081 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:18,082 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:22 [2021-01-07 05:05:18,290 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:05:18,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:18,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 27 [2021-01-07 05:05:18,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052867449] [2021-01-07 05:05:18,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-07 05:05:18,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:18,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-07 05:05:18,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-01-07 05:05:18,292 INFO L87 Difference]: Start difference. First operand 216 states and 245 transitions. Second operand 28 states. [2021-01-07 05:05:20,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:20,114 INFO L93 Difference]: Finished difference Result 342 states and 377 transitions. [2021-01-07 05:05:20,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-07 05:05:20,117 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 43 [2021-01-07 05:05:20,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:20,119 INFO L225 Difference]: With dead ends: 342 [2021-01-07 05:05:20,119 INFO L226 Difference]: Without dead ends: 342 [2021-01-07 05:05:20,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=384, Invalid=1778, Unknown=0, NotChecked=0, Total=2162 [2021-01-07 05:05:20,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-01-07 05:05:20,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 241. [2021-01-07 05:05:20,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2021-01-07 05:05:20,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 274 transitions. [2021-01-07 05:05:20,128 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 274 transitions. Word has length 43 [2021-01-07 05:05:20,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:20,128 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 274 transitions. [2021-01-07 05:05:20,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-01-07 05:05:20,129 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 274 transitions. [2021-01-07 05:05:20,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-07 05:05:20,129 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:20,129 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:20,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-07 05:05:20,338 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:05:20,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:20,339 INFO L82 PathProgramCache]: Analyzing trace with hash -24196359, now seen corresponding path program 5 times [2021-01-07 05:05:20,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:20,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953613073] [2021-01-07 05:05:20,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:20,605 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:05:20,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953613073] [2021-01-07 05:05:20,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705785851] [2021-01-07 05:05:20,605 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:20,679 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-07 05:05:20,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:20,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 61 conjunts are in the unsatisfiable core [2021-01-07 05:05:20,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:20,706 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:20,707 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 05:05:20,709 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:20,722 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:05:20,724 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 05:05:20,724 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:05:20,867 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-07 05:05:20,868 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:20,874 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:20,875 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:20,875 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2021-01-07 05:05:21,392 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:21,392 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 22 treesize of output 22 [2021-01-07 05:05:21,394 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:05:21,406 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:21,408 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:05:21,410 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:21,410 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:35 [2021-01-07 05:05:21,701 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:05:21,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:21,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2021-01-07 05:05:21,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632514157] [2021-01-07 05:05:21,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-01-07 05:05:21,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:21,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-01-07 05:05:21,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1173, Unknown=0, NotChecked=0, Total=1260 [2021-01-07 05:05:21,706 INFO L87 Difference]: Start difference. First operand 241 states and 274 transitions. Second operand 36 states. [2021-01-07 05:05:23,219 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-01-07 05:05:24,010 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2021-01-07 05:05:25,001 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-01-07 05:05:25,242 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2021-01-07 05:05:25,475 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2021-01-07 05:05:25,998 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2021-01-07 05:05:26,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:26,505 INFO L93 Difference]: Finished difference Result 540 states and 589 transitions. [2021-01-07 05:05:26,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-07 05:05:26,507 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 48 [2021-01-07 05:05:26,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:26,509 INFO L225 Difference]: With dead ends: 540 [2021-01-07 05:05:26,510 INFO L226 Difference]: Without dead ends: 469 [2021-01-07 05:05:26,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=618, Invalid=3804, Unknown=0, NotChecked=0, Total=4422 [2021-01-07 05:05:26,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-01-07 05:05:26,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 337. [2021-01-07 05:05:26,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2021-01-07 05:05:26,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 382 transitions. [2021-01-07 05:05:26,536 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 382 transitions. Word has length 48 [2021-01-07 05:05:26,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:26,536 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 382 transitions. [2021-01-07 05:05:26,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-01-07 05:05:26,536 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 382 transitions. [2021-01-07 05:05:26,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-07 05:05:26,537 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:26,537 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:26,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-01-07 05:05:26,752 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:05:26,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:26,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1252507090, now seen corresponding path program 4 times [2021-01-07 05:05:26,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:26,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470988380] [2021-01-07 05:05:26,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:27,626 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:05:27,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470988380] [2021-01-07 05:05:27,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206171462] [2021-01-07 05:05:27,627 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 05:05:27,696 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:05:27,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:27,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 50 conjunts are in the unsatisfiable core [2021-01-07 05:05:27,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:27,717 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_23|], 1=[|v_#valid_27|]} [2021-01-07 05:05:27,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:05:27,724 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 05:05:27,726 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:27,734 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:27,740 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 05:05:27,742 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:27,749 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:27,752 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:27,752 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:21 [2021-01-07 05:05:27,976 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-07 05:05:27,977 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:27,986 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:27,987 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:27,987 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:30 [2021-01-07 05:05:28,053 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-01-07 05:05:28,054 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:28,064 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:28,065 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:05:28,066 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:41, output treesize:37 [2021-01-07 05:05:28,648 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 29 [2021-01-07 05:05:28,651 INFO L547 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:05:28,669 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:28,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:05:28,680 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 28 treesize of output 10 [2021-01-07 05:05:28,682 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:28,694 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:28,697 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:28,697 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:56, output treesize:3 [2021-01-07 05:05:28,860 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:28,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:28,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 15] total 41 [2021-01-07 05:05:28,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464660916] [2021-01-07 05:05:28,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-01-07 05:05:28,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:28,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-01-07 05:05:28,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1536, Unknown=0, NotChecked=0, Total=1640 [2021-01-07 05:05:28,862 INFO L87 Difference]: Start difference. First operand 337 states and 382 transitions. Second operand 41 states. [2021-01-07 05:05:30,545 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2021-01-07 05:05:34,898 WARN L197 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2021-01-07 05:05:37,383 WARN L197 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2021-01-07 05:05:37,700 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-01-07 05:05:38,008 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-01-07 05:05:38,502 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2021-01-07 05:05:39,017 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2021-01-07 05:05:42,764 WARN L197 SmtUtils]: Spent 3.68 s on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2021-01-07 05:05:47,178 WARN L197 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2021-01-07 05:05:49,753 WARN L197 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2021-01-07 05:05:52,165 WARN L197 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2021-01-07 05:05:52,352 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-01-07 05:05:56,608 WARN L197 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2021-01-07 05:05:56,831 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2021-01-07 05:05:59,171 WARN L197 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2021-01-07 05:06:03,468 WARN L197 SmtUtils]: Spent 4.18 s on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2021-01-07 05:06:03,654 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2021-01-07 05:06:07,875 WARN L197 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2021-01-07 05:06:08,149 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2021-01-07 05:06:09,255 WARN L197 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2021-01-07 05:06:11,686 WARN L197 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 95 DAG size of output: 75 [2021-01-07 05:06:15,982 WARN L197 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2021-01-07 05:06:16,283 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2021-01-07 05:06:16,511 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2021-01-07 05:06:16,803 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-01-07 05:06:17,039 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2021-01-07 05:06:19,421 WARN L197 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2021-01-07 05:06:19,727 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2021-01-07 05:06:20,301 WARN L197 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2021-01-07 05:06:20,532 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2021-01-07 05:06:20,839 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-01-07 05:06:21,047 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-01-07 05:06:21,478 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2021-01-07 05:06:22,114 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-01-07 05:06:22,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:22,276 INFO L93 Difference]: Finished difference Result 633 states and 696 transitions. [2021-01-07 05:06:22,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-01-07 05:06:22,277 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 49 [2021-01-07 05:06:22,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:22,280 INFO L225 Difference]: With dead ends: 633 [2021-01-07 05:06:22,280 INFO L226 Difference]: Without dead ends: 491 [2021-01-07 05:06:22,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2001 ImplicationChecksByTransitivity, 52.0s TimeCoverageRelationStatistics Valid=1290, Invalid=8216, Unknown=0, NotChecked=0, Total=9506 [2021-01-07 05:06:22,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-01-07 05:06:22,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 392. [2021-01-07 05:06:22,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2021-01-07 05:06:22,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 445 transitions. [2021-01-07 05:06:22,295 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 445 transitions. Word has length 49 [2021-01-07 05:06:22,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:22,295 INFO L481 AbstractCegarLoop]: Abstraction has 392 states and 445 transitions. [2021-01-07 05:06:22,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2021-01-07 05:06:22,295 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 445 transitions. [2021-01-07 05:06:22,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-07 05:06:22,296 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:22,296 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:22,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-07 05:06:22,511 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:22,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:22,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1963378865, now seen corresponding path program 5 times [2021-01-07 05:06:22,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:22,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589456987] [2021-01-07 05:06:22,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:22,718 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:06:22,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589456987] [2021-01-07 05:06:22,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264926578] [2021-01-07 05:06:22,719 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:22,795 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-01-07 05:06:22,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:06:22,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 57 conjunts are in the unsatisfiable core [2021-01-07 05:06:22,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:22,824 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:22,824 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 05:06:22,826 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:22,851 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2021-01-07 05:06:22,853 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:06:22,854 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:06:22,854 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:21 [2021-01-07 05:06:22,855 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:06:22,895 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:06:22,928 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:06:22,962 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:06:22,997 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:06:23,062 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:06:23,120 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:06:23,258 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:06:23,321 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:06:23,523 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2021-01-07 05:06:23,523 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:06:23,781 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2021-01-07 05:06:23,781 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:06:23,953 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:23,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:23,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 26 [2021-01-07 05:06:23,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910524223] [2021-01-07 05:06:23,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-01-07 05:06:23,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:23,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-01-07 05:06:23,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2021-01-07 05:06:23,955 INFO L87 Difference]: Start difference. First operand 392 states and 445 transitions. Second operand 27 states. [2021-01-07 05:06:24,743 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-01-07 05:06:25,083 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2021-01-07 05:06:25,486 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2021-01-07 05:06:25,719 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2021-01-07 05:06:26,075 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2021-01-07 05:06:26,746 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2021-01-07 05:06:27,128 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2021-01-07 05:06:27,303 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2021-01-07 05:06:27,612 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2021-01-07 05:06:27,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:27,907 INFO L93 Difference]: Finished difference Result 611 states and 679 transitions. [2021-01-07 05:06:27,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-07 05:06:27,908 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 53 [2021-01-07 05:06:27,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:27,912 INFO L225 Difference]: With dead ends: 611 [2021-01-07 05:06:27,913 INFO L226 Difference]: Without dead ends: 611 [2021-01-07 05:06:27,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=368, Invalid=1794, Unknown=0, NotChecked=0, Total=2162 [2021-01-07 05:06:27,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-01-07 05:06:27,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 453. [2021-01-07 05:06:27,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2021-01-07 05:06:27,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 515 transitions. [2021-01-07 05:06:27,927 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 515 transitions. Word has length 53 [2021-01-07 05:06:27,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:27,927 INFO L481 AbstractCegarLoop]: Abstraction has 453 states and 515 transitions. [2021-01-07 05:06:27,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-01-07 05:06:27,927 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 515 transitions. [2021-01-07 05:06:27,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-01-07 05:06:27,928 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:27,928 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:28,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:28,143 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:28,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:28,144 INFO L82 PathProgramCache]: Analyzing trace with hash 678158875, now seen corresponding path program 6 times [2021-01-07 05:06:28,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:28,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048790216] [2021-01-07 05:06:28,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:28,474 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 14 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:28,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048790216] [2021-01-07 05:06:28,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157289276] [2021-01-07 05:06:28,475 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:28,576 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-01-07 05:06:28,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:06:28,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 65 conjunts are in the unsatisfiable core [2021-01-07 05:06:28,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:28,784 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 05:06:28,785 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:28,792 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:28,796 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 05:06:28,796 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:06:29,089 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 05:06:29,090 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:29,093 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:29,094 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 05:06:29,094 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 05:06:29,107 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 14 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:29,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:29,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 31 [2021-01-07 05:06:29,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873352138] [2021-01-07 05:06:29,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-01-07 05:06:29,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:29,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-01-07 05:06:29,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=849, Unknown=0, NotChecked=0, Total=930 [2021-01-07 05:06:29,110 INFO L87 Difference]: Start difference. First operand 453 states and 515 transitions. Second operand 31 states. [2021-01-07 05:06:30,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:30,643 INFO L93 Difference]: Finished difference Result 805 states and 890 transitions. [2021-01-07 05:06:30,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-07 05:06:30,644 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 57 [2021-01-07 05:06:30,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:30,648 INFO L225 Difference]: With dead ends: 805 [2021-01-07 05:06:30,648 INFO L226 Difference]: Without dead ends: 675 [2021-01-07 05:06:30,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=264, Invalid=1628, Unknown=0, NotChecked=0, Total=1892 [2021-01-07 05:06:30,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-01-07 05:06:30,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 566. [2021-01-07 05:06:30,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2021-01-07 05:06:30,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 642 transitions. [2021-01-07 05:06:30,667 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 642 transitions. Word has length 57 [2021-01-07 05:06:30,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:30,667 INFO L481 AbstractCegarLoop]: Abstraction has 566 states and 642 transitions. [2021-01-07 05:06:30,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2021-01-07 05:06:30,667 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 642 transitions. [2021-01-07 05:06:30,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-07 05:06:30,669 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:30,669 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:30,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:30,885 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:30,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:30,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1164356062, now seen corresponding path program 7 times [2021-01-07 05:06:30,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:30,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474269108] [2021-01-07 05:06:30,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:31,246 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:31,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474269108] [2021-01-07 05:06:31,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577042300] [2021-01-07 05:06:31,247 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 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 05:06:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:31,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 65 conjunts are in the unsatisfiable core [2021-01-07 05:06:31,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:31,358 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:31,359 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 05:06:31,360 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:31,378 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:06:31,380 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 05:06:31,381 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:06:31,996 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:31,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:31,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2021-01-07 05:06:31,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64017097] [2021-01-07 05:06:31,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-01-07 05:06:31,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:31,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-01-07 05:06:31,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1062, Unknown=0, NotChecked=0, Total=1190 [2021-01-07 05:06:31,998 INFO L87 Difference]: Start difference. First operand 566 states and 642 transitions. Second operand 35 states. [2021-01-07 05:06:33,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:33,413 INFO L93 Difference]: Finished difference Result 766 states and 849 transitions. [2021-01-07 05:06:33,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-07 05:06:33,414 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 61 [2021-01-07 05:06:33,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:33,419 INFO L225 Difference]: With dead ends: 766 [2021-01-07 05:06:33,419 INFO L226 Difference]: Without dead ends: 766 [2021-01-07 05:06:33,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=342, Invalid=1638, Unknown=0, NotChecked=0, Total=1980 [2021-01-07 05:06:33,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-01-07 05:06:33,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 601. [2021-01-07 05:06:33,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2021-01-07 05:06:33,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 683 transitions. [2021-01-07 05:06:33,437 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 683 transitions. Word has length 61 [2021-01-07 05:06:33,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:33,437 INFO L481 AbstractCegarLoop]: Abstraction has 601 states and 683 transitions. [2021-01-07 05:06:33,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2021-01-07 05:06:33,437 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 683 transitions. [2021-01-07 05:06:33,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-07 05:06:33,439 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:33,439 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:33,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-01-07 05:06:33,653 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:33,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:33,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1052245572, now seen corresponding path program 6 times [2021-01-07 05:06:33,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:33,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264378] [2021-01-07 05:06:33,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:34,297 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 63 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:06:34,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264378] [2021-01-07 05:06:34,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103231117] [2021-01-07 05:06:34,298 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 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 05:06:34,401 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-07 05:06:34,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:06:34,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 100 conjunts are in the unsatisfiable core [2021-01-07 05:06:34,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:34,416 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 05:06:34,418 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:34,423 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:34,423 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:06:34,424 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-07 05:06:34,739 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 05:06:34,741 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:34,752 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:34,753 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 05:06:34,754 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2021-01-07 05:06:34,844 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 05:06:34,850 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:34,861 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:34,863 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 05:06:34,863 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:34 [2021-01-07 05:06:36,563 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:36,564 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 38 [2021-01-07 05:06:36,566 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:36,592 INFO L625 ElimStorePlain]: treesize reduction 5, result has 81.5 percent of original size [2021-01-07 05:06:36,609 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 05:06:36,609 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:52, output treesize:8 [2021-01-07 05:06:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 63 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:06:36,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:36,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2021-01-07 05:06:36,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031697155] [2021-01-07 05:06:36,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-01-07 05:06:36,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:36,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-01-07 05:06:36,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=2134, Unknown=0, NotChecked=0, Total=2256 [2021-01-07 05:06:36,769 INFO L87 Difference]: Start difference. First operand 601 states and 683 transitions. Second operand 48 states. [2021-01-07 05:06:38,058 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2021-01-07 05:06:38,267 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2021-01-07 05:06:39,004 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-01-07 05:06:39,282 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-01-07 05:06:39,553 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2021-01-07 05:06:39,813 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-01-07 05:06:40,119 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2021-01-07 05:06:40,729 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2021-01-07 05:06:41,055 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2021-01-07 05:06:41,338 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2021-01-07 05:06:41,580 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2021-01-07 05:06:41,953 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2021-01-07 05:06:42,171 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2021-01-07 05:06:42,429 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2021-01-07 05:06:42,632 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2021-01-07 05:06:42,849 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2021-01-07 05:06:43,278 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-01-07 05:06:43,518 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-01-07 05:06:43,736 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2021-01-07 05:06:43,986 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-01-07 05:06:44,372 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-01-07 05:06:44,713 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-01-07 05:06:45,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:45,269 INFO L93 Difference]: Finished difference Result 1183 states and 1328 transitions. [2021-01-07 05:06:45,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-01-07 05:06:45,270 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 61 [2021-01-07 05:06:45,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:45,274 INFO L225 Difference]: With dead ends: 1183 [2021-01-07 05:06:45,274 INFO L226 Difference]: Without dead ends: 1183 [2021-01-07 05:06:45,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1660 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=735, Invalid=7097, Unknown=0, NotChecked=0, Total=7832 [2021-01-07 05:06:45,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2021-01-07 05:06:45,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 938. [2021-01-07 05:06:45,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 938 states. [2021-01-07 05:06:45,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1065 transitions. [2021-01-07 05:06:45,302 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1065 transitions. Word has length 61 [2021-01-07 05:06:45,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:45,302 INFO L481 AbstractCegarLoop]: Abstraction has 938 states and 1065 transitions. [2021-01-07 05:06:45,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2021-01-07 05:06:45,302 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1065 transitions. [2021-01-07 05:06:45,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-01-07 05:06:45,304 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:45,304 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:45,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:45,519 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:45,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:45,520 INFO L82 PathProgramCache]: Analyzing trace with hash 241818559, now seen corresponding path program 7 times [2021-01-07 05:06:45,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:45,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725052777] [2021-01-07 05:06:45,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:45,791 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 78 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:06:45,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725052777] [2021-01-07 05:06:45,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95857683] [2021-01-07 05:06:45,791 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 05:06:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:45,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 54 conjunts are in the unsatisfiable core [2021-01-07 05:06:45,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:46,189 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 15 proven. 69 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:06:46,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:46,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 22 [2021-01-07 05:06:46,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210116182] [2021-01-07 05:06:46,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-07 05:06:46,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:46,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-07 05:06:46,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:06:46,191 INFO L87 Difference]: Start difference. First operand 938 states and 1065 transitions. Second operand 23 states. [2021-01-07 05:06:47,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:47,162 INFO L93 Difference]: Finished difference Result 1234 states and 1391 transitions. [2021-01-07 05:06:47,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-07 05:06:47,163 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 65 [2021-01-07 05:06:47,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:47,169 INFO L225 Difference]: With dead ends: 1234 [2021-01-07 05:06:47,169 INFO L226 Difference]: Without dead ends: 1234 [2021-01-07 05:06:47,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=207, Invalid=785, Unknown=0, NotChecked=0, Total=992 [2021-01-07 05:06:47,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2021-01-07 05:06:47,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1027. [2021-01-07 05:06:47,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1027 states. [2021-01-07 05:06:47,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1167 transitions. [2021-01-07 05:06:47,192 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1167 transitions. Word has length 65 [2021-01-07 05:06:47,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:47,192 INFO L481 AbstractCegarLoop]: Abstraction has 1027 states and 1167 transitions. [2021-01-07 05:06:47,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-07 05:06:47,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1167 transitions. [2021-01-07 05:06:47,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-07 05:06:47,194 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:47,194 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:47,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-01-07 05:06:47,409 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:47,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:47,410 INFO L82 PathProgramCache]: Analyzing trace with hash 147941651, now seen corresponding path program 8 times [2021-01-07 05:06:47,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:47,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101827156] [2021-01-07 05:06:47,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:47,839 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 17 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:47,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101827156] [2021-01-07 05:06:47,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706684624] [2021-01-07 05:06:47,840 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 05:06:47,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:06:47,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:06:47,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 77 conjunts are in the unsatisfiable core [2021-01-07 05:06:47,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:48,206 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 05:06:48,207 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:48,214 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:48,216 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 05:06:48,216 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:06:48,542 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 05:06:48,545 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:48,547 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:48,547 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 05:06:48,547 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 05:06:48,558 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 17 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:06:48,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:48,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 34 [2021-01-07 05:06:48,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909899432] [2021-01-07 05:06:48,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-01-07 05:06:48,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:48,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-01-07 05:06:48,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1033, Unknown=0, NotChecked=0, Total=1122 [2021-01-07 05:06:48,561 INFO L87 Difference]: Start difference. First operand 1027 states and 1167 transitions. Second operand 34 states. [2021-01-07 05:06:50,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:50,873 INFO L93 Difference]: Finished difference Result 1690 states and 1879 transitions. [2021-01-07 05:06:50,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-07 05:06:50,873 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2021-01-07 05:06:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:50,880 INFO L225 Difference]: With dead ends: 1690 [2021-01-07 05:06:50,880 INFO L226 Difference]: Without dead ends: 1523 [2021-01-07 05:06:50,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256 [2021-01-07 05:06:50,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-01-07 05:06:50,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1287. [2021-01-07 05:06:50,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1287 states. [2021-01-07 05:06:50,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1462 transitions. [2021-01-07 05:06:50,909 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1462 transitions. Word has length 66 [2021-01-07 05:06:50,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:50,909 INFO L481 AbstractCegarLoop]: Abstraction has 1287 states and 1462 transitions. [2021-01-07 05:06:50,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2021-01-07 05:06:50,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1462 transitions. [2021-01-07 05:06:50,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-07 05:06:50,911 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:50,912 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:51,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-01-07 05:06:51,125 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:06:51,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:51,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1184709681, now seen corresponding path program 1 times [2021-01-07 05:06:51,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:51,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627929222] [2021-01-07 05:06:51,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 8 proven. 79 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-01-07 05:06:51,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627929222] [2021-01-07 05:06:51,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825385187] [2021-01-07 05:06:51,548 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 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 05:06:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:51,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 43 conjunts are in the unsatisfiable core [2021-01-07 05:06:51,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:51,799 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 05:06:51,801 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:51,809 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:51,810 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 05:06:51,811 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:06:52,616 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:52,617 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 25 treesize of output 48 [2021-01-07 05:06:52,623 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:52,657 INFO L625 ElimStorePlain]: treesize reduction 21, result has 51.2 percent of original size [2021-01-07 05:06:52,663 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 05:06:52,663 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:31, output treesize:3 [2021-01-07 05:06:52,784 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 32 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-01-07 05:06:52,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:52,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 30 [2021-01-07 05:06:52,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251862099] [2021-01-07 05:06:52,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-01-07 05:06:52,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:52,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-01-07 05:06:52,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=808, Unknown=0, NotChecked=0, Total=870 [2021-01-07 05:06:52,787 INFO L87 Difference]: Start difference. First operand 1287 states and 1462 transitions. Second operand 30 states. [2021-01-07 05:07:01,364 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2021-01-07 05:07:01,707 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-01-07 05:07:02,336 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2021-01-07 05:07:02,632 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2021-01-07 05:07:02,832 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-01-07 05:07:03,029 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-01-07 05:07:03,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:03,156 INFO L93 Difference]: Finished difference Result 1596 states and 1769 transitions. [2021-01-07 05:07:03,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-01-07 05:07:03,157 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 66 [2021-01-07 05:07:03,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:03,163 INFO L225 Difference]: With dead ends: 1596 [2021-01-07 05:07:03,163 INFO L226 Difference]: Without dead ends: 1185 [2021-01-07 05:07:03,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2654 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1161, Invalid=9759, Unknown=0, NotChecked=0, Total=10920 [2021-01-07 05:07:03,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2021-01-07 05:07:03,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 964. [2021-01-07 05:07:03,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2021-01-07 05:07:03,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1091 transitions. [2021-01-07 05:07:03,185 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1091 transitions. Word has length 66 [2021-01-07 05:07:03,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:03,186 INFO L481 AbstractCegarLoop]: Abstraction has 964 states and 1091 transitions. [2021-01-07 05:07:03,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-01-07 05:07:03,186 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1091 transitions. [2021-01-07 05:07:03,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-01-07 05:07:03,188 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:03,188 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:03,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-01-07 05:07:03,402 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:03,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:03,403 INFO L82 PathProgramCache]: Analyzing trace with hash 267889840, now seen corresponding path program 9 times [2021-01-07 05:07:03,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:03,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231068308] [2021-01-07 05:07:03,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 28 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:03,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231068308] [2021-01-07 05:07:03,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495418174] [2021-01-07 05:07:03,850 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 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 05:07:03,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-07 05:07:03,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:03,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 64 conjunts are in the unsatisfiable core [2021-01-07 05:07:03,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:03,992 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:03,993 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 05:07:03,995 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:04,019 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:07:04,021 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 05:07:04,022 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:07:04,840 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 45 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:04,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:04,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 38 [2021-01-07 05:07:04,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904484688] [2021-01-07 05:07:04,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-01-07 05:07:04,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:04,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-01-07 05:07:04,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1314, Unknown=0, NotChecked=0, Total=1482 [2021-01-07 05:07:04,843 INFO L87 Difference]: Start difference. First operand 964 states and 1091 transitions. Second operand 39 states. [2021-01-07 05:07:07,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:07,677 INFO L93 Difference]: Finished difference Result 1176 states and 1306 transitions. [2021-01-07 05:07:07,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-07 05:07:07,679 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 70 [2021-01-07 05:07:07,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:07,683 INFO L225 Difference]: With dead ends: 1176 [2021-01-07 05:07:07,684 INFO L226 Difference]: Without dead ends: 1176 [2021-01-07 05:07:07,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=596, Invalid=2374, Unknown=0, NotChecked=0, Total=2970 [2021-01-07 05:07:07,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2021-01-07 05:07:07,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1009. [2021-01-07 05:07:07,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2021-01-07 05:07:07,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1144 transitions. [2021-01-07 05:07:07,708 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1144 transitions. Word has length 70 [2021-01-07 05:07:07,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:07,708 INFO L481 AbstractCegarLoop]: Abstraction has 1009 states and 1144 transitions. [2021-01-07 05:07:07,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2021-01-07 05:07:07,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1144 transitions. [2021-01-07 05:07:07,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-07 05:07:07,711 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:07,711 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:07,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-01-07 05:07:07,925 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:07,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:07,926 INFO L82 PathProgramCache]: Analyzing trace with hash 2007377610, now seen corresponding path program 8 times [2021-01-07 05:07:07,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:07,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213643569] [2021-01-07 05:07:07,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:08,868 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 10 proven. 108 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:07:08,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213643569] [2021-01-07 05:07:08,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901432011] [2021-01-07 05:07:08,869 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 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 05:07:08,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:07:08,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:08,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 118 conjunts are in the unsatisfiable core [2021-01-07 05:07:08,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:08,986 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 05:07:08,988 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:08,996 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:08,999 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:08,999 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-07 05:07:09,497 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 05:07:09,498 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:09,510 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:09,512 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 05:07:09,513 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2021-01-07 05:07:09,634 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 05:07:09,636 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:09,653 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:09,655 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 05:07:09,655 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:34 [2021-01-07 05:07:12,619 INFO L348 Elim1Store]: treesize reduction 10, result has 77.8 percent of original size [2021-01-07 05:07:12,620 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 55 treesize of output 54 [2021-01-07 05:07:12,623 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:12,657 INFO L625 ElimStorePlain]: treesize reduction 9, result has 71.0 percent of original size [2021-01-07 05:07:12,661 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 05:07:12,662 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:65, output treesize:8 [2021-01-07 05:07:12,914 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 10 proven. 108 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:07:12,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:12,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 29] total 54 [2021-01-07 05:07:12,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815953709] [2021-01-07 05:07:12,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-01-07 05:07:12,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:12,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-01-07 05:07:12,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=2736, Unknown=0, NotChecked=0, Total=2862 [2021-01-07 05:07:12,917 INFO L87 Difference]: Start difference. First operand 1009 states and 1144 transitions. Second operand 54 states. [2021-01-07 05:07:15,123 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2021-01-07 05:07:15,379 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2021-01-07 05:07:16,502 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2021-01-07 05:07:17,040 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2021-01-07 05:07:17,437 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2021-01-07 05:07:17,637 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-01-07 05:07:17,987 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2021-01-07 05:07:18,423 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2021-01-07 05:07:18,861 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-01-07 05:07:19,472 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-01-07 05:07:19,854 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2021-01-07 05:07:20,203 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-01-07 05:07:20,608 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-01-07 05:07:20,888 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-01-07 05:07:21,216 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2021-01-07 05:07:21,552 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-01-07 05:07:21,894 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-01-07 05:07:22,105 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-01-07 05:07:22,470 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-01-07 05:07:22,748 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-01-07 05:07:23,227 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-01-07 05:07:23,523 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-01-07 05:07:24,051 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-01-07 05:07:24,339 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-01-07 05:07:24,754 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-01-07 05:07:25,018 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-01-07 05:07:25,260 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-01-07 05:07:25,517 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-01-07 05:07:25,950 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-01-07 05:07:27,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:27,699 INFO L93 Difference]: Finished difference Result 2183 states and 2453 transitions. [2021-01-07 05:07:27,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-01-07 05:07:27,701 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 73 [2021-01-07 05:07:27,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:27,707 INFO L225 Difference]: With dead ends: 2183 [2021-01-07 05:07:27,707 INFO L226 Difference]: Without dead ends: 2140 [2021-01-07 05:07:27,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2429 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=940, Invalid=10832, Unknown=0, NotChecked=0, Total=11772 [2021-01-07 05:07:27,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2021-01-07 05:07:27,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 1582. [2021-01-07 05:07:27,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2021-01-07 05:07:27,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 1795 transitions. [2021-01-07 05:07:27,742 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 1795 transitions. Word has length 73 [2021-01-07 05:07:27,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:27,742 INFO L481 AbstractCegarLoop]: Abstraction has 1582 states and 1795 transitions. [2021-01-07 05:07:27,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2021-01-07 05:07:27,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 1795 transitions. [2021-01-07 05:07:27,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-01-07 05:07:27,745 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:27,745 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:27,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-01-07 05:07:27,959 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:27,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:27,960 INFO L82 PathProgramCache]: Analyzing trace with hash 15423873, now seen corresponding path program 10 times [2021-01-07 05:07:27,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:27,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158543829] [2021-01-07 05:07:27,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 20 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:28,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158543829] [2021-01-07 05:07:28,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925288395] [2021-01-07 05:07:28,479 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 05:07:28,563 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:07:28,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:28,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 67 conjunts are in the unsatisfiable core [2021-01-07 05:07:28,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:28,593 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:28,593 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 05:07:28,594 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:28,619 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:07:28,621 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 05:07:28,621 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:07:29,273 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 05:07:29,274 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:29,282 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:29,283 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:29,283 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2021-01-07 05:07:30,134 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 05:07:30,136 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 05:07:30,153 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:30,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:07:30,161 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:30,162 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2021-01-07 05:07:30,165 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:30,176 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:30,179 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:30,179 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:34, output treesize:3 [2021-01-07 05:07:30,201 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 96 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:30,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:30,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 45 [2021-01-07 05:07:30,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936382969] [2021-01-07 05:07:30,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-01-07 05:07:30,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:30,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-01-07 05:07:30,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1821, Unknown=0, NotChecked=0, Total=1980 [2021-01-07 05:07:30,204 INFO L87 Difference]: Start difference. First operand 1582 states and 1795 transitions. Second operand 45 states. [2021-01-07 05:07:32,680 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-01-07 05:07:33,281 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2021-01-07 05:07:34,375 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-01-07 05:07:35,587 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2021-01-07 05:07:37,036 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-01-07 05:07:38,155 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2021-01-07 05:07:39,289 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2021-01-07 05:07:39,635 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-01-07 05:07:40,131 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2021-01-07 05:07:41,167 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-01-07 05:07:41,734 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2021-01-07 05:07:42,573 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-01-07 05:07:43,118 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-01-07 05:07:43,875 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-01-07 05:07:44,221 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-01-07 05:07:44,630 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-01-07 05:07:44,916 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2021-01-07 05:07:46,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:46,090 INFO L93 Difference]: Finished difference Result 2598 states and 2871 transitions. [2021-01-07 05:07:46,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-01-07 05:07:46,092 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 75 [2021-01-07 05:07:46,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:46,100 INFO L225 Difference]: With dead ends: 2598 [2021-01-07 05:07:46,101 INFO L226 Difference]: Without dead ends: 2348 [2021-01-07 05:07:46,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3774 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=1712, Invalid=14290, Unknown=0, NotChecked=0, Total=16002 [2021-01-07 05:07:46,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2021-01-07 05:07:46,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 1919. [2021-01-07 05:07:46,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1919 states. [2021-01-07 05:07:46,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 2180 transitions. [2021-01-07 05:07:46,141 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 2180 transitions. Word has length 75 [2021-01-07 05:07:46,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:46,141 INFO L481 AbstractCegarLoop]: Abstraction has 1919 states and 2180 transitions. [2021-01-07 05:07:46,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2021-01-07 05:07:46,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 2180 transitions. [2021-01-07 05:07:46,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-01-07 05:07:46,145 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:46,145 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:46,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:46,361 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:46,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:46,361 INFO L82 PathProgramCache]: Analyzing trace with hash 2052723789, now seen corresponding path program 9 times [2021-01-07 05:07:46,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:46,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889861599] [2021-01-07 05:07:46,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:46,747 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 15 proven. 120 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:07:46,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889861599] [2021-01-07 05:07:46,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77295634] [2021-01-07 05:07:46,747 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 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 05:07:46,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-01-07 05:07:46,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:46,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 60 conjunts are in the unsatisfiable core [2021-01-07 05:07:46,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:47,006 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:47,007 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 05:07:47,010 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:47,052 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2021-01-07 05:07:47,055 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 05:07:47,056 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:7 [2021-01-07 05:07:47,655 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 28 proven. 107 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:07:47,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:47,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 25 [2021-01-07 05:07:47,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905812704] [2021-01-07 05:07:47,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-07 05:07:47,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:47,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-07 05:07:47,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2021-01-07 05:07:47,658 INFO L87 Difference]: Start difference. First operand 1919 states and 2180 transitions. Second operand 26 states. [2021-01-07 05:07:50,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:50,037 INFO L93 Difference]: Finished difference Result 2495 states and 2824 transitions. [2021-01-07 05:07:50,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-07 05:07:50,039 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 77 [2021-01-07 05:07:50,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:50,046 INFO L225 Difference]: With dead ends: 2495 [2021-01-07 05:07:50,046 INFO L226 Difference]: Without dead ends: 2495 [2021-01-07 05:07:50,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=289, Invalid=1271, Unknown=0, NotChecked=0, Total=1560 [2021-01-07 05:07:50,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2021-01-07 05:07:50,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2082. [2021-01-07 05:07:50,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2082 states. [2021-01-07 05:07:50,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2366 transitions. [2021-01-07 05:07:50,089 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2366 transitions. Word has length 77 [2021-01-07 05:07:50,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:50,089 INFO L481 AbstractCegarLoop]: Abstraction has 2082 states and 2366 transitions. [2021-01-07 05:07:50,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-01-07 05:07:50,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2366 transitions. [2021-01-07 05:07:50,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-01-07 05:07:50,093 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:50,093 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:50,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-01-07 05:07:50,309 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:50,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:50,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1372924284, now seen corresponding path program 11 times [2021-01-07 05:07:50,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:50,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017543955] [2021-01-07 05:07:50,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:51,097 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 45 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:51,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017543955] [2021-01-07 05:07:51,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536256595] [2021-01-07 05:07:51,098 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 05:07:51,232 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-01-07 05:07:51,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:51,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 88 conjunts are in the unsatisfiable core [2021-01-07 05:07:51,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:51,275 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:51,275 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 05:07:51,277 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:51,313 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:07:51,315 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 05:07:51,315 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:07:51,977 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 66 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:07:51,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:51,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 31 [2021-01-07 05:07:51,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095483909] [2021-01-07 05:07:51,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-01-07 05:07:51,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:51,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-01-07 05:07:51,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2021-01-07 05:07:51,979 INFO L87 Difference]: Start difference. First operand 2082 states and 2366 transitions. Second operand 32 states. [2021-01-07 05:07:54,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:54,853 INFO L93 Difference]: Finished difference Result 2459 states and 2750 transitions. [2021-01-07 05:07:54,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-07 05:07:54,855 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 79 [2021-01-07 05:07:54,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:54,862 INFO L225 Difference]: With dead ends: 2459 [2021-01-07 05:07:54,862 INFO L226 Difference]: Without dead ends: 2459 [2021-01-07 05:07:54,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=299, Invalid=1593, Unknown=0, NotChecked=0, Total=1892 [2021-01-07 05:07:54,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2459 states. [2021-01-07 05:07:54,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2459 to 2152. [2021-01-07 05:07:54,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2152 states. [2021-01-07 05:07:54,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 2449 transitions. [2021-01-07 05:07:54,909 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 2449 transitions. Word has length 79 [2021-01-07 05:07:54,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:54,910 INFO L481 AbstractCegarLoop]: Abstraction has 2152 states and 2449 transitions. [2021-01-07 05:07:54,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2021-01-07 05:07:54,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 2449 transitions. [2021-01-07 05:07:54,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-01-07 05:07:54,913 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:54,914 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:55,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:55,129 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:07:55,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:55,130 INFO L82 PathProgramCache]: Analyzing trace with hash -2122268416, now seen corresponding path program 2 times [2021-01-07 05:07:55,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:55,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118299046] [2021-01-07 05:07:55,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:55,780 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 10 proven. 129 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-01-07 05:07:55,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118299046] [2021-01-07 05:07:55,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267743477] [2021-01-07 05:07:55,780 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 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 05:07:55,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:07:55,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:55,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 74 conjunts are in the unsatisfiable core [2021-01-07 05:07:55,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:55,917 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 05:07:55,920 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:55,928 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:55,929 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:55,929 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-07 05:07:56,343 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 05:07:56,345 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:56,393 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:56,394 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 05:07:56,394 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2021-01-07 05:07:56,487 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-01-07 05:07:56,488 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:56,500 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:56,502 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 05:07:56,503 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:35, output treesize:31 [2021-01-07 05:07:57,578 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:57,579 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 05:07:57,581 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:07:57,601 INFO L625 ElimStorePlain]: treesize reduction 5, result has 73.7 percent of original size [2021-01-07 05:07:57,603 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 05:07:57,604 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:38, output treesize:3 [2021-01-07 05:07:57,708 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 11 proven. 128 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-01-07 05:07:57,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:57,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 36 [2021-01-07 05:07:57,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608451287] [2021-01-07 05:07:57,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-01-07 05:07:57,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:57,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-01-07 05:07:57,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2021-01-07 05:07:57,710 INFO L87 Difference]: Start difference. First operand 2152 states and 2449 transitions. Second operand 36 states. [2021-01-07 05:08:03,125 WARN L197 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2021-01-07 05:08:07,360 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:08:11,716 WARN L197 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2021-01-07 05:08:15,917 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:08:20,532 WARN L197 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2021-01-07 05:08:24,724 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:08:29,177 WARN L197 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2021-01-07 05:08:33,341 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:08:37,616 WARN L197 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2021-01-07 05:08:41,776 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:08:45,982 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-01-07 05:08:46,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:46,293 INFO L93 Difference]: Finished difference Result 2546 states and 2860 transitions. [2021-01-07 05:08:46,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-07 05:08:46,294 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 82 [2021-01-07 05:08:46,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:46,299 INFO L225 Difference]: With dead ends: 2546 [2021-01-07 05:08:46,299 INFO L226 Difference]: Without dead ends: 1956 [2021-01-07 05:08:46,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 47.9s TimeCoverageRelationStatistics Valid=351, Invalid=2955, Unknown=0, NotChecked=0, Total=3306 [2021-01-07 05:08:46,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2021-01-07 05:08:46,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1494. [2021-01-07 05:08:46,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2021-01-07 05:08:46,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1699 transitions. [2021-01-07 05:08:46,321 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1699 transitions. Word has length 82 [2021-01-07 05:08:46,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:46,322 INFO L481 AbstractCegarLoop]: Abstraction has 1494 states and 1699 transitions. [2021-01-07 05:08:46,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-01-07 05:08:46,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1699 transitions. [2021-01-07 05:08:46,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-01-07 05:08:46,324 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:46,324 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:46,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-01-07 05:08:46,538 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:46,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:46,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1425198035, now seen corresponding path program 12 times [2021-01-07 05:08:46,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:46,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188891513] [2021-01-07 05:08:46,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:47,239 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 23 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:47,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188891513] [2021-01-07 05:08:47,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890271057] [2021-01-07 05:08:47,240 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 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 05:08:47,389 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-01-07 05:08:47,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:47,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 97 conjunts are in the unsatisfiable core [2021-01-07 05:08:47,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:47,848 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:08:47,849 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:47,858 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:47,859 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 05:08:47,859 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:08:48,306 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 05:08:48,308 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:48,310 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:48,311 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 05:08:48,311 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 05:08:48,341 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 23 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:48,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:48,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25] total 40 [2021-01-07 05:08:48,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90340] [2021-01-07 05:08:48,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-01-07 05:08:48,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:48,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-01-07 05:08:48,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1455, Unknown=0, NotChecked=0, Total=1560 [2021-01-07 05:08:48,343 INFO L87 Difference]: Start difference. First operand 1494 states and 1699 transitions. Second operand 40 states. [2021-01-07 05:08:52,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:52,633 INFO L93 Difference]: Finished difference Result 2217 states and 2481 transitions. [2021-01-07 05:08:52,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-07 05:08:52,634 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 84 [2021-01-07 05:08:52,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:52,640 INFO L225 Difference]: With dead ends: 2217 [2021-01-07 05:08:52,640 INFO L226 Difference]: Without dead ends: 1884 [2021-01-07 05:08:52,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=333, Invalid=2747, Unknown=0, NotChecked=0, Total=3080 [2021-01-07 05:08:52,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2021-01-07 05:08:52,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1751. [2021-01-07 05:08:52,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1751 states. [2021-01-07 05:08:52,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 1994 transitions. [2021-01-07 05:08:52,660 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 1994 transitions. Word has length 84 [2021-01-07 05:08:52,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:52,660 INFO L481 AbstractCegarLoop]: Abstraction has 1751 states and 1994 transitions. [2021-01-07 05:08:52,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2021-01-07 05:08:52,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 1994 transitions. [2021-01-07 05:08:52,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-01-07 05:08:52,663 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:52,663 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:52,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:52,880 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-01-07 05:08:52,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:52,880 INFO L82 PathProgramCache]: Analyzing trace with hash 701755736, now seen corresponding path program 10 times [2021-01-07 05:08:52,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:52,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780578454] [2021-01-07 05:08:52,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:53,905 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 12 proven. 165 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:08:53,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780578454] [2021-01-07 05:08:53,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524185562] [2021-01-07 05:08:53,905 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 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 05:08:54,000 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:08:54,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:54,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 111 conjunts are in the unsatisfiable core [2021-01-07 05:08:54,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:54,021 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_30|], 1=[|v_#valid_31|]} [2021-01-07 05:08:54,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:08:54,026 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 05:08:54,027 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:54,042 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:54,049 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-07 05:08:54,051 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:54,067 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:54,068 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:54,069 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:24 [2021-01-07 05:08:54,708 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-01-07 05:08:54,710 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:54,721 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:54,721 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:54,722 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:29 [2021-01-07 05:08:54,802 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2021-01-07 05:08:54,803 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:54,815 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:54,815 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:54,816 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:36 [2021-01-07 05:08:57,320 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-01-07 05:08:57,322 INFO L547 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:08:57,356 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:57,360 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-01-07 05:08:57,361 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:76, output treesize:68 [2021-01-07 05:08:57,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:08:57,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:08:57,996 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:57,996 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 30 [2021-01-07 05:08:57,998 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:58,019 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:58,023 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 05:08:58,023 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:72, output treesize:8 [2021-01-07 05:08:58,289 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 87 proven. 90 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:08:58,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:58,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 31] total 58 [2021-01-07 05:08:58,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788229206] [2021-01-07 05:08:58,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-01-07 05:08:58,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:58,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-01-07 05:08:58,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=3121, Unknown=0, NotChecked=0, Total=3306 [2021-01-07 05:08:58,290 INFO L87 Difference]: Start difference. First operand 1751 states and 1994 transitions. Second operand 58 states.