/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_cstrstr-alloca-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:04:55,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:04:55,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:04:55,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:04:55,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:04:55,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:04:55,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:04:55,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:04:55,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:04:55,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:04:55,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:04:55,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:04:55,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:04:55,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:04:55,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:04:55,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:04:55,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:04:55,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:04:55,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:04:55,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:04:55,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:04:55,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:04:55,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:04:55,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:04:55,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:04:55,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:04:55,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:04:55,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:04:55,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:04:55,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:04:55,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:04:55,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:04:55,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:04:55,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:04:55,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:04:55,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:04:55,108 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 05:04:55,136 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:04:55,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:04:55,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:04:55,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:04:55,139 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:04:55,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:04:55,140 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:04:55,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:04:55,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:04:55,141 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:04:55,141 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:04:55,141 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:04:55,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:04:55,142 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:04:55,142 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:04:55,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:04:55,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:04:55,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:04:55,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:04:55,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:04:55,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:04:55,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:04:55,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:04:55,144 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:04:55,145 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:04:55,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:04:55,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:04:55,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:04:55,547 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:04:55,547 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:04:55,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstrstr-alloca-2.i [2021-01-07 05:04:55,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/14627869d/dfb41a519cd14f8f88c3d21989d081dd/FLAG17f9b2662 [2021-01-07 05:04:56,411 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:04:56,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrstr-alloca-2.i [2021-01-07 05:04:56,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/14627869d/dfb41a519cd14f8f88c3d21989d081dd/FLAG17f9b2662 [2021-01-07 05:04:56,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/14627869d/dfb41a519cd14f8f88c3d21989d081dd [2021-01-07 05:04:56,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:04:56,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:04:56,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:04:56,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:04:56,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:04:56,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:04:56" (1/1) ... [2021-01-07 05:04:56,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc0fe06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:56, skipping insertion in model container [2021-01-07 05:04:56,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:04:56" (1/1) ... [2021-01-07 05:04:56,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:04:56,813 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~len~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 05:04:57,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:04:57,251 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~len~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 05:04:57,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:04:57,352 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:04:57,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:57 WrapperNode [2021-01-07 05:04:57,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:04:57,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:04:57,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:04:57,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:04:57,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:57" (1/1) ... [2021-01-07 05:04:57,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:57" (1/1) ... [2021-01-07 05:04:57,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:04:57,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:04:57,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:04:57,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:04:57,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:57" (1/1) ... [2021-01-07 05:04:57,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:57" (1/1) ... [2021-01-07 05:04:57,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:57" (1/1) ... [2021-01-07 05:04:57,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:57" (1/1) ... [2021-01-07 05:04:57,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:57" (1/1) ... [2021-01-07 05:04:57,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:57" (1/1) ... [2021-01-07 05:04:57,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:57" (1/1) ... [2021-01-07 05:04:57,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:04:57,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:04:57,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:04:57,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:04:57,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:57" (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 05:04:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:04:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:04:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:04:57,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:04:57,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:04:57,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:04:58,143 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:04:58,143 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-01-07 05:04:58,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:04:58 BoogieIcfgContainer [2021-01-07 05:04:58,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:04:58,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:04:58,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:04:58,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:04:58,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:04:56" (1/3) ... [2021-01-07 05:04:58,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cefea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:04:58, skipping insertion in model container [2021-01-07 05:04:58,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:04:57" (2/3) ... [2021-01-07 05:04:58,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cefea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:04:58, skipping insertion in model container [2021-01-07 05:04:58,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:04:58" (3/3) ... [2021-01-07 05:04:58,159 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cstrstr-alloca-2.i [2021-01-07 05:04:58,166 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:04:58,172 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 25 error locations. [2021-01-07 05:04:58,196 INFO L253 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2021-01-07 05:04:58,232 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:04:58,233 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:04:58,233 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:04:58,234 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:04:58,234 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:04:58,234 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:04:58,235 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:04:58,238 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:04:58,260 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2021-01-07 05:04:58,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:04:58,270 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:58,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:58,272 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:04:58,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:58,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2021-01-07 05:04:58,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:58,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876482862] [2021-01-07 05:04:58,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:58,511 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 05:04:58,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876482862] [2021-01-07 05:04:58,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:58,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:04:58,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211499962] [2021-01-07 05:04:58,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:04:58,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:58,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:04:58,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:04:58,542 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 3 states. [2021-01-07 05:04:58,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:58,647 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2021-01-07 05:04:58,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:04:58,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-01-07 05:04:58,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:58,661 INFO L225 Difference]: With dead ends: 77 [2021-01-07 05:04:58,661 INFO L226 Difference]: Without dead ends: 75 [2021-01-07 05:04:58,663 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 05:04:58,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-01-07 05:04:58,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-01-07 05:04:58,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-07 05:04:58,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2021-01-07 05:04:58,712 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 7 [2021-01-07 05:04:58,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:58,713 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2021-01-07 05:04:58,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:04:58,713 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2021-01-07 05:04:58,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:04:58,714 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:58,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:58,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:04:58,715 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:04:58,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:58,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029097, now seen corresponding path program 1 times [2021-01-07 05:04:58,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:58,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521242849] [2021-01-07 05:04:58,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:58,810 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 05:04:58,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521242849] [2021-01-07 05:04:58,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:04:58,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:04:58,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535507189] [2021-01-07 05:04:58,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:04:58,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:58,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:04:58,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:04:58,815 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand 5 states. [2021-01-07 05:04:58,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:58,968 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2021-01-07 05:04:58,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:04:58,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2021-01-07 05:04:58,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:58,976 INFO L225 Difference]: With dead ends: 79 [2021-01-07 05:04:58,976 INFO L226 Difference]: Without dead ends: 79 [2021-01-07 05:04:58,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:04:58,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-01-07 05:04:58,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2021-01-07 05:04:58,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-01-07 05:04:59,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2021-01-07 05:04:59,005 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 7 [2021-01-07 05:04:59,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:59,005 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2021-01-07 05:04:59,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:04:59,006 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2021-01-07 05:04:59,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-07 05:04:59,006 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:59,007 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:59,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:04:59,007 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:04:59,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:59,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1906083540, now seen corresponding path program 1 times [2021-01-07 05:04:59,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:59,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934462081] [2021-01-07 05:04:59,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:59,074 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 05:04:59,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934462081] [2021-01-07 05:04:59,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457478249] [2021-01-07 05:04:59,075 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 05:04:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:59,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-07 05:04:59,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:59,274 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 05:04:59,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:04:59,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-01-07 05:04:59,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399253810] [2021-01-07 05:04:59,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:04:59,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:59,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:04:59,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:04:59,279 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand 5 states. [2021-01-07 05:04:59,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:59,334 INFO L93 Difference]: Finished difference Result 149 states and 171 transitions. [2021-01-07 05:04:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:04:59,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-01-07 05:04:59,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:59,340 INFO L225 Difference]: With dead ends: 149 [2021-01-07 05:04:59,340 INFO L226 Difference]: Without dead ends: 149 [2021-01-07 05:04:59,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:04:59,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-01-07 05:04:59,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 84. [2021-01-07 05:04:59,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-01-07 05:04:59,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 97 transitions. [2021-01-07 05:04:59,360 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 97 transitions. Word has length 11 [2021-01-07 05:04:59,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:59,361 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 97 transitions. [2021-01-07 05:04:59,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:04:59,361 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 97 transitions. [2021-01-07 05:04:59,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-07 05:04:59,362 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:59,362 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:59,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-07 05:04:59,577 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:04:59,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:59,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2021-01-07 05:04:59,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:59,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650678833] [2021-01-07 05:04:59,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:59,659 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 05:04:59,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650678833] [2021-01-07 05:04:59,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081708393] [2021-01-07 05:04:59,660 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 05:04:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:59,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-07 05:04:59,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:59,765 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_28|], 1=[|v_#valid_36|]} [2021-01-07 05:04:59,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:04:59,781 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 05:04:59,782 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:59,793 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:59,801 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 05:04:59,803 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:59,812 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:59,814 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 05:04:59,815 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2021-01-07 05:04:59,847 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 05:04:59,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:59,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-01-07 05:04:59,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924434821] [2021-01-07 05:04:59,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:04:59,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:59,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:04:59,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:04:59,849 INFO L87 Difference]: Start difference. First operand 84 states and 97 transitions. Second operand 6 states. [2021-01-07 05:04:59,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:59,950 INFO L93 Difference]: Finished difference Result 85 states and 98 transitions. [2021-01-07 05:04:59,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:04:59,951 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-01-07 05:04:59,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:59,952 INFO L225 Difference]: With dead ends: 85 [2021-01-07 05:04:59,952 INFO L226 Difference]: Without dead ends: 85 [2021-01-07 05:04:59,953 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 05:04:59,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-01-07 05:04:59,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2021-01-07 05:04:59,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-01-07 05:04:59,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 95 transitions. [2021-01-07 05:04:59,959 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 95 transitions. Word has length 11 [2021-01-07 05:04:59,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:59,960 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 95 transitions. [2021-01-07 05:04:59,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:04:59,960 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 95 transitions. [2021-01-07 05:04:59,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-07 05:04:59,961 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:59,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:00,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:00,175 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:00,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:00,176 INFO L82 PathProgramCache]: Analyzing trace with hash -2090265437, now seen corresponding path program 1 times [2021-01-07 05:05:00,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:00,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077940463] [2021-01-07 05:05:00,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:00,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:00,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077940463] [2021-01-07 05:05:00,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:05:00,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:05:00,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970042911] [2021-01-07 05:05:00,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:05:00,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:00,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:05:00,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:05:00,228 INFO L87 Difference]: Start difference. First operand 82 states and 95 transitions. Second operand 4 states. [2021-01-07 05:05:00,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:00,252 INFO L93 Difference]: Finished difference Result 88 states and 101 transitions. [2021-01-07 05:05:00,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:05:00,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-01-07 05:05:00,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:00,254 INFO L225 Difference]: With dead ends: 88 [2021-01-07 05:05:00,254 INFO L226 Difference]: Without dead ends: 88 [2021-01-07 05:05:00,255 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 05:05:00,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-01-07 05:05:00,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2021-01-07 05:05:00,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-01-07 05:05:00,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 96 transitions. [2021-01-07 05:05:00,260 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 96 transitions. Word has length 13 [2021-01-07 05:05:00,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:00,261 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 96 transitions. [2021-01-07 05:05:00,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:05:00,261 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 96 transitions. [2021-01-07 05:05:00,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-07 05:05:00,262 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:00,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:00,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-07 05:05:00,262 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:00,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:00,263 INFO L82 PathProgramCache]: Analyzing trace with hash -2090265385, now seen corresponding path program 1 times [2021-01-07 05:05:00,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:00,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559211835] [2021-01-07 05:05:00,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:00,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559211835] [2021-01-07 05:05:00,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:05:00,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:05:00,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903343212] [2021-01-07 05:05:00,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:05:00,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:00,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:05:00,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:05:00,298 INFO L87 Difference]: Start difference. First operand 83 states and 96 transitions. Second operand 3 states. [2021-01-07 05:05:00,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:00,336 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2021-01-07 05:05:00,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:05:00,336 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2021-01-07 05:05:00,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:00,337 INFO L225 Difference]: With dead ends: 81 [2021-01-07 05:05:00,337 INFO L226 Difference]: Without dead ends: 81 [2021-01-07 05:05:00,338 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 05:05:00,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-01-07 05:05:00,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-01-07 05:05:00,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-01-07 05:05:00,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2021-01-07 05:05:00,343 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 13 [2021-01-07 05:05:00,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:00,343 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2021-01-07 05:05:00,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:05:00,343 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2021-01-07 05:05:00,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-07 05:05:00,344 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:00,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:00,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-07 05:05:00,344 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:00,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:00,345 INFO L82 PathProgramCache]: Analyzing trace with hash -2090265384, now seen corresponding path program 1 times [2021-01-07 05:05:00,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:00,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028364987] [2021-01-07 05:05:00,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:00,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:00,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028364987] [2021-01-07 05:05:00,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:05:00,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:05:00,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649507972] [2021-01-07 05:05:00,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:05:00,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:00,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:05:00,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:05:00,462 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand 6 states. [2021-01-07 05:05:00,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:00,555 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2021-01-07 05:05:00,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:05:00,556 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2021-01-07 05:05:00,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:00,557 INFO L225 Difference]: With dead ends: 83 [2021-01-07 05:05:00,557 INFO L226 Difference]: Without dead ends: 83 [2021-01-07 05:05:00,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:05:00,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-01-07 05:05:00,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2021-01-07 05:05:00,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-01-07 05:05:00,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2021-01-07 05:05:00,574 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 13 [2021-01-07 05:05:00,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:00,574 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2021-01-07 05:05:00,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:05:00,575 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2021-01-07 05:05:00,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-07 05:05:00,576 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:00,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:00,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-07 05:05:00,577 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:00,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:00,578 INFO L82 PathProgramCache]: Analyzing trace with hash -862198810, now seen corresponding path program 1 times [2021-01-07 05:05:00,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:00,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165253448] [2021-01-07 05:05:00,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:00,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:00,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165253448] [2021-01-07 05:05:00,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206022957] [2021-01-07 05:05:00,709 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 05:05:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:00,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-07 05:05:00,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:00,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:00,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:00,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-01-07 05:05:00,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874884961] [2021-01-07 05:05:00,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:05:00,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:00,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:05:00,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:05:00,844 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand 8 states. [2021-01-07 05:05:01,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:01,048 INFO L93 Difference]: Finished difference Result 144 states and 166 transitions. [2021-01-07 05:05:01,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:05:01,049 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2021-01-07 05:05:01,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:01,050 INFO L225 Difference]: With dead ends: 144 [2021-01-07 05:05:01,050 INFO L226 Difference]: Without dead ends: 144 [2021-01-07 05:05:01,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:05:01,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-01-07 05:05:01,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 89. [2021-01-07 05:05:01,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-01-07 05:05:01,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 104 transitions. [2021-01-07 05:05:01,055 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 104 transitions. Word has length 17 [2021-01-07 05:05:01,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:01,055 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 104 transitions. [2021-01-07 05:05:01,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:05:01,055 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 104 transitions. [2021-01-07 05:05:01,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-07 05:05:01,056 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:01,056 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:01,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:01,271 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:01,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:01,273 INFO L82 PathProgramCache]: Analyzing trace with hash -862198757, now seen corresponding path program 1 times [2021-01-07 05:05:01,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:01,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939484020] [2021-01-07 05:05:01,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:01,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:01,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939484020] [2021-01-07 05:05:01,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187901305] [2021-01-07 05:05:01,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:05:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:01,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-07 05:05:01,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:01,428 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 05:05:01,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:05:01,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-01-07 05:05:01,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125395830] [2021-01-07 05:05:01,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:05:01,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:01,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:05:01,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:05:01,430 INFO L87 Difference]: Start difference. First operand 89 states and 104 transitions. Second operand 5 states. [2021-01-07 05:05:01,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:01,480 INFO L93 Difference]: Finished difference Result 170 states and 194 transitions. [2021-01-07 05:05:01,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:05:01,480 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2021-01-07 05:05:01,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:01,481 INFO L225 Difference]: With dead ends: 170 [2021-01-07 05:05:01,482 INFO L226 Difference]: Without dead ends: 170 [2021-01-07 05:05:01,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:05:01,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-01-07 05:05:01,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 113. [2021-01-07 05:05:01,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2021-01-07 05:05:01,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 129 transitions. [2021-01-07 05:05:01,486 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 129 transitions. Word has length 17 [2021-01-07 05:05:01,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:01,487 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 129 transitions. [2021-01-07 05:05:01,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:05:01,487 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 129 transitions. [2021-01-07 05:05:01,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-07 05:05:01,488 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:01,488 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:01,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:01,703 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:01,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:01,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1873316007, now seen corresponding path program 1 times [2021-01-07 05:05:01,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:01,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512714352] [2021-01-07 05:05:01,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:01,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:01,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512714352] [2021-01-07 05:05:01,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118119412] [2021-01-07 05:05:01,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:01,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-07 05:05:01,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:01,861 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:01,862 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 05:05:01,864 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:01,879 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:05:01,882 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 05:05:01,882 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:05:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:01,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:01,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-01-07 05:05:01,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292346492] [2021-01-07 05:05:01,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:05:01,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:01,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:05:01,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:05:01,923 INFO L87 Difference]: Start difference. First operand 113 states and 129 transitions. Second operand 7 states. [2021-01-07 05:05:02,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:02,018 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2021-01-07 05:05:02,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:05:02,018 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2021-01-07 05:05:02,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:02,019 INFO L225 Difference]: With dead ends: 116 [2021-01-07 05:05:02,019 INFO L226 Difference]: Without dead ends: 116 [2021-01-07 05:05:02,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 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 05:05:02,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-01-07 05:05:02,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 110. [2021-01-07 05:05:02,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2021-01-07 05:05:02,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2021-01-07 05:05:02,024 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 17 [2021-01-07 05:05:02,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:02,024 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2021-01-07 05:05:02,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:05:02,024 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2021-01-07 05:05:02,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-07 05:05:02,025 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:02,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:02,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-07 05:05:02,239 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:02,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:02,240 INFO L82 PathProgramCache]: Analyzing trace with hash -2142062488, now seen corresponding path program 1 times [2021-01-07 05:05:02,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:02,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682020006] [2021-01-07 05:05:02,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:02,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:02,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682020006] [2021-01-07 05:05:02,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:05:02,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-07 05:05:02,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148357481] [2021-01-07 05:05:02,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:05:02,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:02,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:05:02,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:05:02,317 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand 7 states. [2021-01-07 05:05:02,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:02,409 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2021-01-07 05:05:02,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:05:02,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2021-01-07 05:05:02,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:02,410 INFO L225 Difference]: With dead ends: 109 [2021-01-07 05:05:02,410 INFO L226 Difference]: Without dead ends: 109 [2021-01-07 05:05:02,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:05:02,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-01-07 05:05:02,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 96. [2021-01-07 05:05:02,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-01-07 05:05:02,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2021-01-07 05:05:02,414 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 17 [2021-01-07 05:05:02,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:02,414 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2021-01-07 05:05:02,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:05:02,415 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2021-01-07 05:05:02,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-07 05:05:02,415 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:02,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:02,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-07 05:05:02,416 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:02,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:02,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1860324492, now seen corresponding path program 1 times [2021-01-07 05:05:02,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:02,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703539306] [2021-01-07 05:05:02,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:02,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:02,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703539306] [2021-01-07 05:05:02,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:05:02,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:05:02,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821038671] [2021-01-07 05:05:02,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:05:02,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:02,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:05:02,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:05:02,447 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 4 states. [2021-01-07 05:05:02,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:02,505 INFO L93 Difference]: Finished difference Result 95 states and 109 transitions. [2021-01-07 05:05:02,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:05:02,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2021-01-07 05:05:02,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:02,507 INFO L225 Difference]: With dead ends: 95 [2021-01-07 05:05:02,507 INFO L226 Difference]: Without dead ends: 95 [2021-01-07 05:05:02,507 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 05:05:02,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-01-07 05:05:02,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-01-07 05:05:02,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2021-01-07 05:05:02,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2021-01-07 05:05:02,510 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 20 [2021-01-07 05:05:02,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:02,510 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2021-01-07 05:05:02,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:05:02,511 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2021-01-07 05:05:02,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-07 05:05:02,511 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:02,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:02,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-07 05:05:02,512 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:02,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:02,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1860324491, now seen corresponding path program 1 times [2021-01-07 05:05:02,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:02,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972579071] [2021-01-07 05:05:02,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:05:02,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972579071] [2021-01-07 05:05:02,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:05:02,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:05:02,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815737579] [2021-01-07 05:05:02,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:05:02,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:02,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:05:02,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:05:02,577 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand 6 states. [2021-01-07 05:05:02,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:02,658 INFO L93 Difference]: Finished difference Result 94 states and 108 transitions. [2021-01-07 05:05:02,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:05:02,659 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2021-01-07 05:05:02,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:02,659 INFO L225 Difference]: With dead ends: 94 [2021-01-07 05:05:02,659 INFO L226 Difference]: Without dead ends: 94 [2021-01-07 05:05:02,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:05:02,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-01-07 05:05:02,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-01-07 05:05:02,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-01-07 05:05:02,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions. [2021-01-07 05:05:02,663 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 20 [2021-01-07 05:05:02,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:02,663 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 108 transitions. [2021-01-07 05:05:02,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:05:02,663 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions. [2021-01-07 05:05:02,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-07 05:05:02,664 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:02,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:02,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-07 05:05:02,665 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:02,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:02,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1331077295, now seen corresponding path program 1 times [2021-01-07 05:05:02,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:02,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905371134] [2021-01-07 05:05:02,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:02,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:05:02,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905371134] [2021-01-07 05:05:02,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:05:02,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:05:02,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437741692] [2021-01-07 05:05:02,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:05:02,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:02,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:05:02,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:05:02,701 INFO L87 Difference]: Start difference. First operand 94 states and 108 transitions. Second operand 5 states. [2021-01-07 05:05:02,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:02,770 INFO L93 Difference]: Finished difference Result 95 states and 109 transitions. [2021-01-07 05:05:02,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:05:02,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2021-01-07 05:05:02,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:02,772 INFO L225 Difference]: With dead ends: 95 [2021-01-07 05:05:02,772 INFO L226 Difference]: Without dead ends: 95 [2021-01-07 05:05:02,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:05:02,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-01-07 05:05:02,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2021-01-07 05:05:02,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-01-07 05:05:02,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2021-01-07 05:05:02,775 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 23 [2021-01-07 05:05:02,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:02,775 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2021-01-07 05:05:02,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:05:02,775 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2021-01-07 05:05:02,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-07 05:05:02,776 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:02,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:02,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-07 05:05:02,777 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:02,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:02,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1331077296, now seen corresponding path program 1 times [2021-01-07 05:05:02,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:02,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058961105] [2021-01-07 05:05:02,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:02,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:05:02,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058961105] [2021-01-07 05:05:02,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:05:02,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-07 05:05:02,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58044039] [2021-01-07 05:05:02,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:05:02,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:02,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:05:02,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:05:02,917 INFO L87 Difference]: Start difference. First operand 93 states and 107 transitions. Second operand 8 states. [2021-01-07 05:05:03,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:03,196 INFO L93 Difference]: Finished difference Result 107 states and 119 transitions. [2021-01-07 05:05:03,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:05:03,196 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2021-01-07 05:05:03,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:03,197 INFO L225 Difference]: With dead ends: 107 [2021-01-07 05:05:03,197 INFO L226 Difference]: Without dead ends: 107 [2021-01-07 05:05:03,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:05:03,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-01-07 05:05:03,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2021-01-07 05:05:03,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-01-07 05:05:03,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2021-01-07 05:05:03,201 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 23 [2021-01-07 05:05:03,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:03,201 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2021-01-07 05:05:03,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:05:03,202 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2021-01-07 05:05:03,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-07 05:05:03,202 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:03,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:03,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-07 05:05:03,203 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:03,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:03,203 INFO L82 PathProgramCache]: Analyzing trace with hash 513428846, now seen corresponding path program 1 times [2021-01-07 05:05:03,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:03,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007416401] [2021-01-07 05:05:03,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:03,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:03,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007416401] [2021-01-07 05:05:03,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265351427] [2021-01-07 05:05:03,415 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 05:05:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:03,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-07 05:05:03,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:03,599 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-01-07 05:05:03,600 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:03,602 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:03,603 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:03,603 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2021-01-07 05:05:03,635 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 05:05:03,636 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:03,638 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:03,639 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 05:05:03,639 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 05:05:03,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:03,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:03,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2021-01-07 05:05:03,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850019810] [2021-01-07 05:05:03,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-07 05:05:03,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:03,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-07 05:05:03,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:05:03,646 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand 16 states. [2021-01-07 05:05:04,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:04,393 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2021-01-07 05:05:04,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-07 05:05:04,394 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 23 [2021-01-07 05:05:04,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:04,399 INFO L225 Difference]: With dead ends: 120 [2021-01-07 05:05:04,399 INFO L226 Difference]: Without dead ends: 120 [2021-01-07 05:05:04,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2021-01-07 05:05:04,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-01-07 05:05:04,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 103. [2021-01-07 05:05:04,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2021-01-07 05:05:04,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 118 transitions. [2021-01-07 05:05:04,405 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 118 transitions. Word has length 23 [2021-01-07 05:05:04,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:04,406 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 118 transitions. [2021-01-07 05:05:04,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-07 05:05:04,406 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 118 transitions. [2021-01-07 05:05:04,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-07 05:05:04,406 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:04,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:04,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:04,620 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:04,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:04,620 INFO L82 PathProgramCache]: Analyzing trace with hash -731742098, now seen corresponding path program 1 times [2021-01-07 05:05:04,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:04,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118755101] [2021-01-07 05:05:04,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:04,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:05:04,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118755101] [2021-01-07 05:05:04,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:05:04,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:05:04,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663641763] [2021-01-07 05:05:04,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:05:04,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:04,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:05:04,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:05:04,696 INFO L87 Difference]: Start difference. First operand 103 states and 118 transitions. Second operand 4 states. [2021-01-07 05:05:04,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:04,736 INFO L93 Difference]: Finished difference Result 102 states and 117 transitions. [2021-01-07 05:05:04,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:05:04,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2021-01-07 05:05:04,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:04,737 INFO L225 Difference]: With dead ends: 102 [2021-01-07 05:05:04,738 INFO L226 Difference]: Without dead ends: 74 [2021-01-07 05:05:04,738 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 05:05:04,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-01-07 05:05:04,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-01-07 05:05:04,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-01-07 05:05:04,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2021-01-07 05:05:04,741 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 25 [2021-01-07 05:05:04,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:04,741 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2021-01-07 05:05:04,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:05:04,741 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2021-01-07 05:05:04,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-07 05:05:04,741 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:04,742 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:04,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-07 05:05:04,742 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:04,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:04,743 INFO L82 PathProgramCache]: Analyzing trace with hash 510694897, now seen corresponding path program 2 times [2021-01-07 05:05:04,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:04,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432362017] [2021-01-07 05:05:04,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:04,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432362017] [2021-01-07 05:05:04,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445389974] [2021-01-07 05:05:04,893 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 05:05:04,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-07 05:05:04,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:04,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-07 05:05:04,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:05,033 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:05:05,034 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:05,040 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:05,048 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 05:05:05,049 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2021-01-07 05:05:05,191 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:05,191 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-01-07 05:05:05,193 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:05:05,208 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:05,212 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:05:05,217 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:05:05,220 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 05:05:05,220 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:25 [2021-01-07 05:05:05,316 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-07 05:05:05,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:05:05,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-01-07 05:05:05,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059245567] [2021-01-07 05:05:05,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:05:05,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:05,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:05:05,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-01-07 05:05:05,319 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 8 states. [2021-01-07 05:05:05,716 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-01-07 05:05:05,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:05,973 INFO L93 Difference]: Finished difference Result 114 states and 129 transitions. [2021-01-07 05:05:05,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:05:05,976 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2021-01-07 05:05:05,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:05,977 INFO L225 Difference]: With dead ends: 114 [2021-01-07 05:05:05,977 INFO L226 Difference]: Without dead ends: 114 [2021-01-07 05:05:05,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:05:05,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-01-07 05:05:05,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 75. [2021-01-07 05:05:05,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-07 05:05:05,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2021-01-07 05:05:05,980 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 27 [2021-01-07 05:05:05,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:05,981 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2021-01-07 05:05:05,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:05:05,981 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2021-01-07 05:05:05,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-07 05:05:05,981 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:05,981 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:06,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-07 05:05:06,182 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:06,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:06,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1337529045, now seen corresponding path program 1 times [2021-01-07 05:05:06,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:06,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549691672] [2021-01-07 05:05:06,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:06,697 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:06,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549691672] [2021-01-07 05:05:06,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388340999] [2021-01-07 05:05:06,698 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 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 05:05:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:06,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-07 05:05:06,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:06,954 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:05:06,955 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:06,963 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:06,965 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 05:05:06,965 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2021-01-07 05:05:07,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:05:07,143 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:07,144 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2021-01-07 05:05:07,145 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:07,151 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:07,153 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 05:05:07,154 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:3 [2021-01-07 05:05:07,162 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:07,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:07,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 24 [2021-01-07 05:05:07,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90492732] [2021-01-07 05:05:07,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-07 05:05:07,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:07,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-07 05:05:07,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:05:07,165 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 24 states. [2021-01-07 05:05:08,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:08,380 INFO L93 Difference]: Finished difference Result 237 states and 265 transitions. [2021-01-07 05:05:08,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-07 05:05:08,382 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 30 [2021-01-07 05:05:08,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:08,388 INFO L225 Difference]: With dead ends: 237 [2021-01-07 05:05:08,388 INFO L226 Difference]: Without dead ends: 237 [2021-01-07 05:05:08,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=272, Invalid=1134, Unknown=0, NotChecked=0, Total=1406 [2021-01-07 05:05:08,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-01-07 05:05:08,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 87. [2021-01-07 05:05:08,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-01-07 05:05:08,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2021-01-07 05:05:08,403 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 30 [2021-01-07 05:05:08,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:08,403 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2021-01-07 05:05:08,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-01-07 05:05:08,403 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2021-01-07 05:05:08,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-07 05:05:08,404 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:08,404 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:08,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:08,607 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:08,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:08,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1863084157, now seen corresponding path program 1 times [2021-01-07 05:05:08,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:08,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714494530] [2021-01-07 05:05:08,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:08,704 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:05:08,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714494530] [2021-01-07 05:05:08,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:05:08,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:05:08,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99227009] [2021-01-07 05:05:08,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:05:08,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:08,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:05:08,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:05:08,707 INFO L87 Difference]: Start difference. First operand 87 states and 97 transitions. Second operand 5 states. [2021-01-07 05:05:08,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:08,785 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2021-01-07 05:05:08,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:05:08,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2021-01-07 05:05:08,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:08,786 INFO L225 Difference]: With dead ends: 86 [2021-01-07 05:05:08,786 INFO L226 Difference]: Without dead ends: 86 [2021-01-07 05:05:08,787 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 05:05:08,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-01-07 05:05:08,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-01-07 05:05:08,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-01-07 05:05:08,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2021-01-07 05:05:08,790 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 33 [2021-01-07 05:05:08,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:08,790 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2021-01-07 05:05:08,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:05:08,790 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2021-01-07 05:05:08,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-07 05:05:08,791 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:08,791 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:08,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-01-07 05:05:08,791 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:08,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:08,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1863084158, now seen corresponding path program 1 times [2021-01-07 05:05:08,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:08,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825110166] [2021-01-07 05:05:08,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:08,871 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:05:08,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825110166] [2021-01-07 05:05:08,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549516241] [2021-01-07 05:05:08,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:08,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-07 05:05:08,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:08,973 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_30|], 1=[|v_#valid_37|]} [2021-01-07 05:05:08,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:05:08,978 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 05:05:08,979 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:08,988 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:08,993 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 05:05:08,995 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:09,003 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:09,006 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:09,006 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:24, output treesize:9 [2021-01-07 05:05:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-07 05:05:09,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:05:09,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2021-01-07 05:05:09,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244643404] [2021-01-07 05:05:09,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:05:09,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:09,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:05:09,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:05:09,052 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand 6 states. [2021-01-07 05:05:09,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:09,158 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2021-01-07 05:05:09,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:05:09,158 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2021-01-07 05:05:09,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:09,159 INFO L225 Difference]: With dead ends: 91 [2021-01-07 05:05:09,159 INFO L226 Difference]: Without dead ends: 91 [2021-01-07 05:05:09,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:05:09,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-01-07 05:05:09,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2021-01-07 05:05:09,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-01-07 05:05:09,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2021-01-07 05:05:09,162 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 33 [2021-01-07 05:05:09,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:09,162 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2021-01-07 05:05:09,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:05:09,163 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2021-01-07 05:05:09,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-07 05:05:09,163 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:09,163 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:05:09,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:09,378 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:09,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:09,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1878769906, now seen corresponding path program 2 times [2021-01-07 05:05:09,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:09,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248316280] [2021-01-07 05:05:09,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:09,561 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:09,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248316280] [2021-01-07 05:05:09,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749868885] [2021-01-07 05:05:09,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:09,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:05:09,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:09,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-07 05:05:09,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:09,854 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:09,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:09,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 17 [2021-01-07 05:05:09,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556074299] [2021-01-07 05:05:09,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-07 05:05:09,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:09,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-07 05:05:09,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-01-07 05:05:09,859 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand 18 states. [2021-01-07 05:05:10,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:10,348 INFO L93 Difference]: Finished difference Result 211 states and 238 transitions. [2021-01-07 05:05:10,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:05:10,349 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2021-01-07 05:05:10,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:10,351 INFO L225 Difference]: With dead ends: 211 [2021-01-07 05:05:10,351 INFO L226 Difference]: Without dead ends: 211 [2021-01-07 05:05:10,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:05:10,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-01-07 05:05:10,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 92. [2021-01-07 05:05:10,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-01-07 05:05:10,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2021-01-07 05:05:10,362 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 34 [2021-01-07 05:05:10,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:10,363 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2021-01-07 05:05:10,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-07 05:05:10,364 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2021-01-07 05:05:10,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-07 05:05:10,364 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:10,364 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:05:10,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:10,579 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:10,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:10,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1579516876, now seen corresponding path program 3 times [2021-01-07 05:05:10,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:10,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953127986] [2021-01-07 05:05:10,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:10,841 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:05:10,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953127986] [2021-01-07 05:05:10,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184132824] [2021-01-07 05:05:10,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:10,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-07 05:05:10,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:10,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-07 05:05:10,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:10,947 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:10,948 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 05:05:10,951 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:10,968 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:05:10,970 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 05:05:10,971 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:13, output treesize:9 [2021-01-07 05:05:11,028 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 05:05:11,029 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:11,034 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:11,034 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:11,035 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2021-01-07 05:05:11,169 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:11,169 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-01-07 05:05:11,171 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:05:11,179 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:11,180 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:11,181 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:23 [2021-01-07 05:05:11,284 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-01-07 05:05:11,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:11,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 23 [2021-01-07 05:05:11,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564591670] [2021-01-07 05:05:11,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-07 05:05:11,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:11,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-07 05:05:11,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:05:11,286 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand 23 states. [2021-01-07 05:05:13,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:13,942 INFO L93 Difference]: Finished difference Result 264 states and 298 transitions. [2021-01-07 05:05:13,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-07 05:05:13,942 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 37 [2021-01-07 05:05:13,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:13,945 INFO L225 Difference]: With dead ends: 264 [2021-01-07 05:05:13,946 INFO L226 Difference]: Without dead ends: 264 [2021-01-07 05:05:13,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=334, Invalid=1646, Unknown=0, NotChecked=0, Total=1980 [2021-01-07 05:05:13,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-01-07 05:05:13,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 100. [2021-01-07 05:05:13,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2021-01-07 05:05:13,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2021-01-07 05:05:13,952 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 37 [2021-01-07 05:05:13,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:13,952 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2021-01-07 05:05:13,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-07 05:05:13,952 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2021-01-07 05:05:13,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-07 05:05:13,953 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:13,953 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:14,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-01-07 05:05:14,167 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:14,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:14,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1768471691, now seen corresponding path program 1 times [2021-01-07 05:05:14,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:14,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875060755] [2021-01-07 05:05:14,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:14,336 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-07 05:05:14,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875060755] [2021-01-07 05:05:14,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:05:14,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-07 05:05:14,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755125576] [2021-01-07 05:05:14,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:05:14,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:14,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:05:14,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:05:14,338 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand 9 states. [2021-01-07 05:05:14,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:14,589 INFO L93 Difference]: Finished difference Result 151 states and 167 transitions. [2021-01-07 05:05:14,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:05:14,589 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2021-01-07 05:05:14,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:14,591 INFO L225 Difference]: With dead ends: 151 [2021-01-07 05:05:14,591 INFO L226 Difference]: Without dead ends: 93 [2021-01-07 05:05:14,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:05:14,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-01-07 05:05:14,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-01-07 05:05:14,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-01-07 05:05:14,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2021-01-07 05:05:14,595 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 38 [2021-01-07 05:05:14,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:14,595 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2021-01-07 05:05:14,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:05:14,596 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2021-01-07 05:05:14,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-07 05:05:14,596 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:14,596 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:14,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-01-07 05:05:14,597 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:14,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:14,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1374104905, now seen corresponding path program 1 times [2021-01-07 05:05:14,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:14,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764473073] [2021-01-07 05:05:14,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:14,824 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:05:14,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764473073] [2021-01-07 05:05:14,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762042111] [2021-01-07 05:05:14,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:14,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-07 05:05:14,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:14,909 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 05:05:14,911 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:14,916 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:14,917 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:14,917 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-07 05:05:15,030 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 05:05:15,031 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:15,041 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:15,043 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 05:05:15,044 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2021-01-07 05:05:15,089 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 05:05:15,090 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:15,100 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:15,103 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 05:05:15,104 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:35, output treesize:31 [2021-01-07 05:05:15,317 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:15,318 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 05:05:15,320 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:05:15,334 INFO L625 ElimStorePlain]: treesize reduction 5, result has 73.7 percent of original size [2021-01-07 05:05:15,340 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 05:05:15,340 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:38, output treesize:3 [2021-01-07 05:05:15,353 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:05:15,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:15,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 18 [2021-01-07 05:05:15,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263143233] [2021-01-07 05:05:15,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-07 05:05:15,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:15,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-07 05:05:15,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-01-07 05:05:15,355 INFO L87 Difference]: Start difference. First operand 93 states and 104 transitions. Second operand 18 states. [2021-01-07 05:05:16,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:16,133 INFO L93 Difference]: Finished difference Result 151 states and 167 transitions. [2021-01-07 05:05:16,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-07 05:05:16,133 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 38 [2021-01-07 05:05:16,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:16,134 INFO L225 Difference]: With dead ends: 151 [2021-01-07 05:05:16,135 INFO L226 Difference]: Without dead ends: 100 [2021-01-07 05:05:16,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=169, Invalid=533, Unknown=0, NotChecked=0, Total=702 [2021-01-07 05:05:16,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-01-07 05:05:16,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 97. [2021-01-07 05:05:16,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2021-01-07 05:05:16,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2021-01-07 05:05:16,139 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 38 [2021-01-07 05:05:16,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:16,139 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2021-01-07 05:05:16,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-07 05:05:16,139 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2021-01-07 05:05:16,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-07 05:05:16,140 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:16,140 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:16,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-01-07 05:05:16,348 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:16,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:16,349 INFO L82 PathProgramCache]: Analyzing trace with hash 514562726, now seen corresponding path program 2 times [2021-01-07 05:05:16,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:16,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503896275] [2021-01-07 05:05:16,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:16,483 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:05:16,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503896275] [2021-01-07 05:05:16,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582571845] [2021-01-07 05:05:16,484 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:16,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:05:16,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:16,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-07 05:05:16,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:16,734 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:05:16,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:16,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-01-07 05:05:16,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528026223] [2021-01-07 05:05:16,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-07 05:05:16,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:16,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-07 05:05:16,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-01-07 05:05:16,736 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand 15 states. [2021-01-07 05:05:17,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:17,096 INFO L93 Difference]: Finished difference Result 133 states and 149 transitions. [2021-01-07 05:05:17,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:05:17,097 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2021-01-07 05:05:17,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:17,098 INFO L225 Difference]: With dead ends: 133 [2021-01-07 05:05:17,098 INFO L226 Difference]: Without dead ends: 133 [2021-01-07 05:05:17,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:05:17,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-01-07 05:05:17,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 120. [2021-01-07 05:05:17,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2021-01-07 05:05:17,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 146 transitions. [2021-01-07 05:05:17,102 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 146 transitions. Word has length 42 [2021-01-07 05:05:17,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:17,102 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 146 transitions. [2021-01-07 05:05:17,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-07 05:05:17,102 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 146 transitions. [2021-01-07 05:05:17,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-07 05:05:17,103 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:17,103 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:17,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-07 05:05:17,317 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:17,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:17,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1228465231, now seen corresponding path program 1 times [2021-01-07 05:05:17,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:17,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418347312] [2021-01-07 05:05:17,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-01-07 05:05:17,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418347312] [2021-01-07 05:05:17,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:05:17,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:05:17,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276254186] [2021-01-07 05:05:17,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:05:17,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:17,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:05:17,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:05:17,372 INFO L87 Difference]: Start difference. First operand 120 states and 146 transitions. Second operand 5 states. [2021-01-07 05:05:17,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:17,439 INFO L93 Difference]: Finished difference Result 127 states and 152 transitions. [2021-01-07 05:05:17,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:05:17,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2021-01-07 05:05:17,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:17,441 INFO L225 Difference]: With dead ends: 127 [2021-01-07 05:05:17,441 INFO L226 Difference]: Without dead ends: 127 [2021-01-07 05:05:17,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 05:05:17,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-01-07 05:05:17,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 118. [2021-01-07 05:05:17,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2021-01-07 05:05:17,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 142 transitions. [2021-01-07 05:05:17,444 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 142 transitions. Word has length 43 [2021-01-07 05:05:17,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:17,445 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 142 transitions. [2021-01-07 05:05:17,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:05:17,445 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 142 transitions. [2021-01-07 05:05:17,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-07 05:05:17,445 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:17,446 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:17,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-01-07 05:05:17,446 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:17,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:17,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1228465230, now seen corresponding path program 1 times [2021-01-07 05:05:17,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:17,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356312351] [2021-01-07 05:05:17,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:17,567 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:05:17,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356312351] [2021-01-07 05:05:17,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671882868] [2021-01-07 05:05:17,568 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:17,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-07 05:05:17,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:17,664 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_32|], 1=[|v_#valid_39|]} [2021-01-07 05:05:17,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:05:17,671 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 05:05:17,672 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:17,682 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:17,691 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 05:05:17,692 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:17,701 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:17,703 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 05:05:17,704 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2021-01-07 05:05:17,901 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:05:17,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:17,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-01-07 05:05:17,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944842201] [2021-01-07 05:05:17,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-07 05:05:17,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:17,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-07 05:05:17,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:05:17,903 INFO L87 Difference]: Start difference. First operand 118 states and 142 transitions. Second operand 16 states. [2021-01-07 05:05:18,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:18,504 INFO L93 Difference]: Finished difference Result 150 states and 168 transitions. [2021-01-07 05:05:18,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:05:18,505 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 43 [2021-01-07 05:05:18,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:18,506 INFO L225 Difference]: With dead ends: 150 [2021-01-07 05:05:18,506 INFO L226 Difference]: Without dead ends: 150 [2021-01-07 05:05:18,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:05:18,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-01-07 05:05:18,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 123. [2021-01-07 05:05:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2021-01-07 05:05:18,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 150 transitions. [2021-01-07 05:05:18,511 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 150 transitions. Word has length 43 [2021-01-07 05:05:18,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:18,512 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 150 transitions. [2021-01-07 05:05:18,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-07 05:05:18,512 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 150 transitions. [2021-01-07 05:05:18,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-07 05:05:18,512 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:18,512 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:18,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:18,727 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:18,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:18,728 INFO L82 PathProgramCache]: Analyzing trace with hash 560922322, now seen corresponding path program 1 times [2021-01-07 05:05:18,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:18,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912949817] [2021-01-07 05:05:18,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:18,777 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-01-07 05:05:18,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912949817] [2021-01-07 05:05:18,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:05:18,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:05:18,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599415968] [2021-01-07 05:05:18,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:05:18,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:18,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:05:18,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:05:18,779 INFO L87 Difference]: Start difference. First operand 123 states and 150 transitions. Second operand 6 states. [2021-01-07 05:05:18,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:18,866 INFO L93 Difference]: Finished difference Result 133 states and 159 transitions. [2021-01-07 05:05:18,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:05:18,867 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2021-01-07 05:05:18,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:18,868 INFO L225 Difference]: With dead ends: 133 [2021-01-07 05:05:18,868 INFO L226 Difference]: Without dead ends: 133 [2021-01-07 05:05:18,868 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 05:05:18,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-01-07 05:05:18,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 122. [2021-01-07 05:05:18,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2021-01-07 05:05:18,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 147 transitions. [2021-01-07 05:05:18,872 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 147 transitions. Word has length 45 [2021-01-07 05:05:18,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:18,872 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 147 transitions. [2021-01-07 05:05:18,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:05:18,873 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 147 transitions. [2021-01-07 05:05:18,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-07 05:05:18,873 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:18,873 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:18,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-01-07 05:05:18,874 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:18,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:18,874 INFO L82 PathProgramCache]: Analyzing trace with hash 560922323, now seen corresponding path program 1 times [2021-01-07 05:05:18,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:18,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672205672] [2021-01-07 05:05:18,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:19,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:05:19,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672205672] [2021-01-07 05:05:19,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10313081] [2021-01-07 05:05:19,023 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:19,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-07 05:05:19,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:19,236 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:05:19,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:19,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2021-01-07 05:05:19,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49130862] [2021-01-07 05:05:19,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-07 05:05:19,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:19,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-07 05:05:19,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-01-07 05:05:19,239 INFO L87 Difference]: Start difference. First operand 122 states and 147 transitions. Second operand 15 states. [2021-01-07 05:05:19,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:19,536 INFO L93 Difference]: Finished difference Result 142 states and 168 transitions. [2021-01-07 05:05:19,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:05:19,536 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2021-01-07 05:05:19,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:19,537 INFO L225 Difference]: With dead ends: 142 [2021-01-07 05:05:19,538 INFO L226 Difference]: Without dead ends: 142 [2021-01-07 05:05:19,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:05:19,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-01-07 05:05:19,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 125. [2021-01-07 05:05:19,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2021-01-07 05:05:19,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 150 transitions. [2021-01-07 05:05:19,544 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 150 transitions. Word has length 45 [2021-01-07 05:05:19,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:19,544 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 150 transitions. [2021-01-07 05:05:19,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-07 05:05:19,545 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 150 transitions. [2021-01-07 05:05:19,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-07 05:05:19,545 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:19,545 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:19,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:19,759 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:19,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:19,760 INFO L82 PathProgramCache]: Analyzing trace with hash -2119524429, now seen corresponding path program 1 times [2021-01-07 05:05:19,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:19,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839906640] [2021-01-07 05:05:19,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:19,809 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-01-07 05:05:19,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839906640] [2021-01-07 05:05:19,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:05:19,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:05:19,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486616744] [2021-01-07 05:05:19,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:05:19,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:19,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:05:19,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:05:19,811 INFO L87 Difference]: Start difference. First operand 125 states and 150 transitions. Second operand 6 states. [2021-01-07 05:05:19,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:19,895 INFO L93 Difference]: Finished difference Result 133 states and 158 transitions. [2021-01-07 05:05:19,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:05:19,896 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2021-01-07 05:05:19,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:19,897 INFO L225 Difference]: With dead ends: 133 [2021-01-07 05:05:19,897 INFO L226 Difference]: Without dead ends: 133 [2021-01-07 05:05:19,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 05:05:19,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-01-07 05:05:19,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 124. [2021-01-07 05:05:19,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2021-01-07 05:05:19,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 148 transitions. [2021-01-07 05:05:19,900 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 148 transitions. Word has length 47 [2021-01-07 05:05:19,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:19,901 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 148 transitions. [2021-01-07 05:05:19,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:05:19,901 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 148 transitions. [2021-01-07 05:05:19,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-07 05:05:19,901 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:19,902 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:19,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-01-07 05:05:19,902 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:19,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:19,903 INFO L82 PathProgramCache]: Analyzing trace with hash -2119524428, now seen corresponding path program 1 times [2021-01-07 05:05:19,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:19,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669751879] [2021-01-07 05:05:19,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:20,036 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:05:20,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669751879] [2021-01-07 05:05:20,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66659390] [2021-01-07 05:05:20,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:20,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-07 05:05:20,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:05:20,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:20,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-01-07 05:05:20,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472773279] [2021-01-07 05:05:20,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-07 05:05:20,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:20,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-07 05:05:20,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-01-07 05:05:20,283 INFO L87 Difference]: Start difference. First operand 124 states and 148 transitions. Second operand 15 states. [2021-01-07 05:05:20,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:20,830 INFO L93 Difference]: Finished difference Result 150 states and 170 transitions. [2021-01-07 05:05:20,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:05:20,831 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2021-01-07 05:05:20,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:20,832 INFO L225 Difference]: With dead ends: 150 [2021-01-07 05:05:20,832 INFO L226 Difference]: Without dead ends: 150 [2021-01-07 05:05:20,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2021-01-07 05:05:20,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-01-07 05:05:20,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 125. [2021-01-07 05:05:20,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2021-01-07 05:05:20,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 149 transitions. [2021-01-07 05:05:20,837 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 149 transitions. Word has length 47 [2021-01-07 05:05:20,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:20,837 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 149 transitions. [2021-01-07 05:05:20,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-07 05:05:20,837 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 149 transitions. [2021-01-07 05:05:20,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-07 05:05:20,838 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:20,838 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:21,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:21,047 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:21,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:21,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1002087267, now seen corresponding path program 3 times [2021-01-07 05:05:21,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:21,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907755850] [2021-01-07 05:05:21,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:05:21,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907755850] [2021-01-07 05:05:21,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308089182] [2021-01-07 05:05:21,420 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:21,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-07 05:05:21,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:21,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 67 conjunts are in the unsatisfiable core [2021-01-07 05:05:21,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:21,544 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:21,544 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 05:05:21,546 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:21,570 INFO L625 ElimStorePlain]: treesize reduction 10, result has 70.6 percent of original size [2021-01-07 05:05:21,572 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:21,572 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:15 [2021-01-07 05:05:21,927 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:05:21,928 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:21,943 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:21,945 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 05:05:21,945 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:31 [2021-01-07 05:05:22,026 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:22,026 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 69 [2021-01-07 05:05:22,029 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:22,067 INFO L625 ElimStorePlain]: treesize reduction 39, result has 50.6 percent of original size [2021-01-07 05:05:22,069 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 05:05:22,069 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:40 [2021-01-07 05:05:22,271 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 22 treesize of output 16 [2021-01-07 05:05:22,273 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:05:22,287 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:22,289 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-01-07 05:05:22,289 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:41, output treesize:35 [2021-01-07 05:05:22,530 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 05:05:22,532 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:22,533 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:22,534 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 05:05:22,534 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2021-01-07 05:05:22,554 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:05:22,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:22,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 21] total 29 [2021-01-07 05:05:22,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523061059] [2021-01-07 05:05:22,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-01-07 05:05:22,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:22,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-01-07 05:05:22,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=740, Unknown=0, NotChecked=0, Total=812 [2021-01-07 05:05:22,556 INFO L87 Difference]: Start difference. First operand 125 states and 149 transitions. Second operand 29 states. [2021-01-07 05:05:23,806 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2021-01-07 05:05:24,118 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2021-01-07 05:05:24,453 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2021-01-07 05:05:25,058 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2021-01-07 05:05:25,226 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2021-01-07 05:05:25,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:25,879 INFO L93 Difference]: Finished difference Result 262 states and 302 transitions. [2021-01-07 05:05:25,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-07 05:05:25,880 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 47 [2021-01-07 05:05:25,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:25,882 INFO L225 Difference]: With dead ends: 262 [2021-01-07 05:05:25,882 INFO L226 Difference]: Without dead ends: 244 [2021-01-07 05:05:25,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=463, Invalid=2399, Unknown=0, NotChecked=0, Total=2862 [2021-01-07 05:05:25,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-01-07 05:05:25,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 200. [2021-01-07 05:05:25,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2021-01-07 05:05:25,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 237 transitions. [2021-01-07 05:05:25,889 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 237 transitions. Word has length 47 [2021-01-07 05:05:25,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:25,889 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 237 transitions. [2021-01-07 05:05:25,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-01-07 05:05:25,890 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 237 transitions. [2021-01-07 05:05:25,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-07 05:05:25,890 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:25,890 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:26,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-01-07 05:05:26,104 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:26,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:26,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1048782252, now seen corresponding path program 1 times [2021-01-07 05:05:26,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:26,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419825608] [2021-01-07 05:05:26,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:26,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-01-07 05:05:26,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419825608] [2021-01-07 05:05:26,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:05:26,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:05:26,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767876309] [2021-01-07 05:05:26,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:05:26,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:26,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:05:26,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:05:26,151 INFO L87 Difference]: Start difference. First operand 200 states and 237 transitions. Second operand 6 states. [2021-01-07 05:05:26,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:26,233 INFO L93 Difference]: Finished difference Result 212 states and 248 transitions. [2021-01-07 05:05:26,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:05:26,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2021-01-07 05:05:26,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:26,237 INFO L225 Difference]: With dead ends: 212 [2021-01-07 05:05:26,238 INFO L226 Difference]: Without dead ends: 212 [2021-01-07 05:05:26,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 05:05:26,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-01-07 05:05:26,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 199. [2021-01-07 05:05:26,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2021-01-07 05:05:26,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 234 transitions. [2021-01-07 05:05:26,245 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 234 transitions. Word has length 49 [2021-01-07 05:05:26,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:26,245 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 234 transitions. [2021-01-07 05:05:26,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:05:26,245 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 234 transitions. [2021-01-07 05:05:26,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-07 05:05:26,246 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:26,246 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:26,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-01-07 05:05:26,246 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:26,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:26,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1048782251, now seen corresponding path program 1 times [2021-01-07 05:05:26,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:26,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259532320] [2021-01-07 05:05:26,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:26,411 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:05:26,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259532320] [2021-01-07 05:05:26,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396797970] [2021-01-07 05:05:26,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:26,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-07 05:05:26,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:26,608 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:05:26,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:26,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 15 [2021-01-07 05:05:26,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623063509] [2021-01-07 05:05:26,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-07 05:05:26,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:26,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-07 05:05:26,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:05:26,610 INFO L87 Difference]: Start difference. First operand 199 states and 234 transitions. Second operand 16 states. [2021-01-07 05:05:27,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:27,016 INFO L93 Difference]: Finished difference Result 261 states and 303 transitions. [2021-01-07 05:05:27,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:05:27,017 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 49 [2021-01-07 05:05:27,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:27,018 INFO L225 Difference]: With dead ends: 261 [2021-01-07 05:05:27,018 INFO L226 Difference]: Without dead ends: 258 [2021-01-07 05:05:27,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2021-01-07 05:05:27,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-01-07 05:05:27,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 204. [2021-01-07 05:05:27,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2021-01-07 05:05:27,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 240 transitions. [2021-01-07 05:05:27,024 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 240 transitions. Word has length 49 [2021-01-07 05:05:27,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:27,025 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 240 transitions. [2021-01-07 05:05:27,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-07 05:05:27,025 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 240 transitions. [2021-01-07 05:05:27,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-07 05:05:27,025 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:27,025 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:27,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-01-07 05:05:27,239 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:27,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:27,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1733532468, now seen corresponding path program 1 times [2021-01-07 05:05:27,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:27,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487283780] [2021-01-07 05:05:27,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:27,331 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-01-07 05:05:27,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487283780] [2021-01-07 05:05:27,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:05:27,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-07 05:05:27,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779604962] [2021-01-07 05:05:27,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:05:27,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:27,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:05:27,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:05:27,333 INFO L87 Difference]: Start difference. First operand 204 states and 240 transitions. Second operand 6 states. [2021-01-07 05:05:27,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:27,405 INFO L93 Difference]: Finished difference Result 259 states and 299 transitions. [2021-01-07 05:05:27,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:05:27,406 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2021-01-07 05:05:27,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:27,408 INFO L225 Difference]: With dead ends: 259 [2021-01-07 05:05:27,408 INFO L226 Difference]: Without dead ends: 241 [2021-01-07 05:05:27,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 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 05:05:27,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-01-07 05:05:27,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 229. [2021-01-07 05:05:27,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2021-01-07 05:05:27,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 267 transitions. [2021-01-07 05:05:27,415 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 267 transitions. Word has length 51 [2021-01-07 05:05:27,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:27,415 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 267 transitions. [2021-01-07 05:05:27,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:05:27,415 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 267 transitions. [2021-01-07 05:05:27,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-07 05:05:27,416 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:27,416 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:27,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-01-07 05:05:27,416 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:27,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:27,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1890652506, now seen corresponding path program 4 times [2021-01-07 05:05:27,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:27,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601160393] [2021-01-07 05:05:27,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:27,570 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:05:27,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601160393] [2021-01-07 05:05:27,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66618196] [2021-01-07 05:05:27,570 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:27,656 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:05:27,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:27,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-07 05:05:27,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:27,835 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:05:27,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:27,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-01-07 05:05:27,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113106281] [2021-01-07 05:05:27,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-07 05:05:27,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:27,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-07 05:05:27,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:05:27,838 INFO L87 Difference]: Start difference. First operand 229 states and 267 transitions. Second operand 17 states. [2021-01-07 05:05:28,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:28,445 INFO L93 Difference]: Finished difference Result 289 states and 326 transitions. [2021-01-07 05:05:28,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:05:28,445 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 51 [2021-01-07 05:05:28,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:28,447 INFO L225 Difference]: With dead ends: 289 [2021-01-07 05:05:28,447 INFO L226 Difference]: Without dead ends: 289 [2021-01-07 05:05:28,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2021-01-07 05:05:28,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-01-07 05:05:28,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 269. [2021-01-07 05:05:28,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2021-01-07 05:05:28,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 321 transitions. [2021-01-07 05:05:28,455 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 321 transitions. Word has length 51 [2021-01-07 05:05:28,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:28,455 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 321 transitions. [2021-01-07 05:05:28,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-07 05:05:28,455 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 321 transitions. [2021-01-07 05:05:28,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-07 05:05:28,456 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:28,456 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:28,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-01-07 05:05:28,670 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:28,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:28,671 INFO L82 PathProgramCache]: Analyzing trace with hash 269209443, now seen corresponding path program 5 times [2021-01-07 05:05:28,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:28,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030396926] [2021-01-07 05:05:28,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:29,522 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:05:29,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030396926] [2021-01-07 05:05:29,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656645910] [2021-01-07 05:05:29,522 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:29,620 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-01-07 05:05:29,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:29,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 77 conjunts are in the unsatisfiable core [2021-01-07 05:05:29,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:29,716 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-01-07 05:05:29,717 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:29,723 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:29,724 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:29,724 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:10 [2021-01-07 05:05:29,929 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:05:29,930 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:29,940 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:29,942 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 05:05:29,943 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:23 [2021-01-07 05:05:30,039 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:30,040 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 63 [2021-01-07 05:05:30,042 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:30,074 INFO L625 ElimStorePlain]: treesize reduction 35, result has 48.5 percent of original size [2021-01-07 05:05:30,076 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 05:05:30,076 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:33 [2021-01-07 05:05:30,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:05:30,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:05:31,052 INFO L348 Elim1Store]: treesize reduction 14, result has 78.8 percent of original size [2021-01-07 05:05:31,053 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 10 case distinctions, treesize of input 38 treesize of output 65 [2021-01-07 05:05:31,065 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:31,072 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:31,078 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:31,078 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:44, output treesize:3 [2021-01-07 05:05:31,100 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:05:31,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:31,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 39 [2021-01-07 05:05:31,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897480297] [2021-01-07 05:05:31,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-01-07 05:05:31,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:31,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-01-07 05:05:31,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2021-01-07 05:05:31,102 INFO L87 Difference]: Start difference. First operand 269 states and 321 transitions. Second operand 39 states. [2021-01-07 05:05:32,708 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2021-01-07 05:05:32,976 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-01-07 05:05:33,168 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-01-07 05:05:33,761 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-01-07 05:05:33,949 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-01-07 05:05:34,147 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-01-07 05:05:34,494 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-01-07 05:05:34,685 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2021-01-07 05:05:34,895 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2021-01-07 05:05:35,098 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-01-07 05:05:35,307 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-01-07 05:05:35,487 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-01-07 05:05:35,666 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2021-01-07 05:05:35,851 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2021-01-07 05:05:36,079 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2021-01-07 05:05:36,267 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-01-07 05:05:36,468 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-01-07 05:05:37,122 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-01-07 05:05:37,293 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-01-07 05:05:37,605 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-01-07 05:05:37,932 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-01-07 05:05:38,247 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-01-07 05:05:39,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:39,053 INFO L93 Difference]: Finished difference Result 528 states and 604 transitions. [2021-01-07 05:05:39,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-01-07 05:05:39,054 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 56 [2021-01-07 05:05:39,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:39,057 INFO L225 Difference]: With dead ends: 528 [2021-01-07 05:05:39,057 INFO L226 Difference]: Without dead ends: 416 [2021-01-07 05:05:39,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1740 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1107, Invalid=6725, Unknown=0, NotChecked=0, Total=7832 [2021-01-07 05:05:39,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-01-07 05:05:39,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 359. [2021-01-07 05:05:39,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2021-01-07 05:05:39,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 428 transitions. [2021-01-07 05:05:39,068 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 428 transitions. Word has length 56 [2021-01-07 05:05:39,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:39,068 INFO L481 AbstractCegarLoop]: Abstraction has 359 states and 428 transitions. [2021-01-07 05:05:39,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2021-01-07 05:05:39,068 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 428 transitions. [2021-01-07 05:05:39,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-01-07 05:05:39,069 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:39,069 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:39,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-01-07 05:05:39,284 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:05:39,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:39,284 INFO L82 PathProgramCache]: Analyzing trace with hash 2081403787, now seen corresponding path program 1 times [2021-01-07 05:05:39,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:39,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006495833] [2021-01-07 05:05:39,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-01-07 05:05:39,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006495833] [2021-01-07 05:05:39,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393129457] [2021-01-07 05:05:39,392 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:39,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 45 conjunts are in the unsatisfiable core [2021-01-07 05:05:39,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:39,510 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 05:05:39,511 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:39,515 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:39,516 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:05:39,516 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-07 05:05:39,675 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 05:05:39,676 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:39,686 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:39,687 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 05:05:39,687 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2021-01-07 05:05:39,735 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 05:05:39,737 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:39,748 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:39,750 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 05:05:39,751 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:35, output treesize:31 [2021-01-07 05:05:40,200 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:40,200 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 05:05:40,203 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:05:40,230 INFO L625 ElimStorePlain]: treesize reduction 5, result has 73.7 percent of original size [2021-01-07 05:05:40,233 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 05:05:40,233 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:38, output treesize:3 [2021-01-07 05:05:40,295 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-01-07 05:05:40,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:40,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14] total 20 [2021-01-07 05:05:40,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034788230] [2021-01-07 05:05:40,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-07 05:05:40,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:40,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-07 05:05:40,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:05:40,297 INFO L87 Difference]: Start difference. First operand 359 states and 428 transitions. Second operand 20 states. [2021-01-07 05:05:45,363 WARN L197 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2021-01-07 05:05:49,701 WARN L197 SmtUtils]: Spent 4.15 s on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-01-07 05:05:53,852 WARN L197 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2021-01-07 05:05:58,123 WARN L197 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-01-07 05:06:02,318 WARN L197 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-01-07 05:06:06,429 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2021-01-07 05:06:10,593 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2021-01-07 05:06:14,782 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2021-01-07 05:06:14,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:14,851 INFO L93 Difference]: Finished difference Result 546 states and 634 transitions. [2021-01-07 05:06:14,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-07 05:06:14,852 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 58 [2021-01-07 05:06:14,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:14,855 INFO L225 Difference]: With dead ends: 546 [2021-01-07 05:06:14,855 INFO L226 Difference]: Without dead ends: 467 [2021-01-07 05:06:14,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 34.2s TimeCoverageRelationStatistics Valid=280, Invalid=1280, Unknown=0, NotChecked=0, Total=1560 [2021-01-07 05:06:14,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-01-07 05:06:14,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 422. [2021-01-07 05:06:14,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2021-01-07 05:06:14,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 510 transitions. [2021-01-07 05:06:14,865 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 510 transitions. Word has length 58 [2021-01-07 05:06:14,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:14,866 INFO L481 AbstractCegarLoop]: Abstraction has 422 states and 510 transitions. [2021-01-07 05:06:14,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-07 05:06:14,866 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 510 transitions. [2021-01-07 05:06:14,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-07 05:06:14,867 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:14,867 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:15,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-01-07 05:06:15,081 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:06:15,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:15,082 INFO L82 PathProgramCache]: Analyzing trace with hash -2033507871, now seen corresponding path program 1 times [2021-01-07 05:06:15,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:15,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066943320] [2021-01-07 05:06:15,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:15,258 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-01-07 05:06:15,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066943320] [2021-01-07 05:06:15,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181302017] [2021-01-07 05:06:15,258 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 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 05:06:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:15,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-07 05:06:15,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:15,521 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-01-07 05:06:15,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:15,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-01-07 05:06:15,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090554543] [2021-01-07 05:06:15,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-07 05:06:15,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:15,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-07 05:06:15,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:06:15,524 INFO L87 Difference]: Start difference. First operand 422 states and 510 transitions. Second operand 17 states. [2021-01-07 05:06:16,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:16,140 INFO L93 Difference]: Finished difference Result 464 states and 540 transitions. [2021-01-07 05:06:16,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-07 05:06:16,141 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 59 [2021-01-07 05:06:16,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:16,144 INFO L225 Difference]: With dead ends: 464 [2021-01-07 05:06:16,144 INFO L226 Difference]: Without dead ends: 463 [2021-01-07 05:06:16,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:06:16,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-01-07 05:06:16,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 421. [2021-01-07 05:06:16,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2021-01-07 05:06:16,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 501 transitions. [2021-01-07 05:06:16,158 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 501 transitions. Word has length 59 [2021-01-07 05:06:16,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:16,159 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 501 transitions. [2021-01-07 05:06:16,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-07 05:06:16,159 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 501 transitions. [2021-01-07 05:06:16,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-01-07 05:06:16,160 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:16,160 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:16,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:16,374 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:06:16,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:16,375 INFO L82 PathProgramCache]: Analyzing trace with hash -162234496, now seen corresponding path program 6 times [2021-01-07 05:06:16,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:16,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639636798] [2021-01-07 05:06:16,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:16,599 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 8 proven. 41 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:06:16,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639636798] [2021-01-07 05:06:16,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123901292] [2021-01-07 05:06:16,600 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 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 05:06:16,717 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-07 05:06:16,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:06:16,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 42 conjunts are in the unsatisfiable core [2021-01-07 05:06:16,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:16,943 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:06:16,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:16,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2021-01-07 05:06:16,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093140277] [2021-01-07 05:06:16,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-07 05:06:16,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:16,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-07 05:06:16,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:06:16,946 INFO L87 Difference]: Start difference. First operand 421 states and 501 transitions. Second operand 20 states. [2021-01-07 05:06:17,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:17,804 INFO L93 Difference]: Finished difference Result 511 states and 591 transitions. [2021-01-07 05:06:17,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-07 05:06:17,805 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 60 [2021-01-07 05:06:17,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:17,808 INFO L225 Difference]: With dead ends: 511 [2021-01-07 05:06:17,808 INFO L226 Difference]: Without dead ends: 511 [2021-01-07 05:06:17,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2021-01-07 05:06:17,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-01-07 05:06:17,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 484. [2021-01-07 05:06:17,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2021-01-07 05:06:17,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 584 transitions. [2021-01-07 05:06:17,819 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 584 transitions. Word has length 60 [2021-01-07 05:06:17,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:17,819 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 584 transitions. [2021-01-07 05:06:17,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-07 05:06:17,819 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 584 transitions. [2021-01-07 05:06:17,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-07 05:06:17,820 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:17,821 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:18,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-01-07 05:06:18,036 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:06:18,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:18,036 INFO L82 PathProgramCache]: Analyzing trace with hash 114423395, now seen corresponding path program 1 times [2021-01-07 05:06:18,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:18,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857775625] [2021-01-07 05:06:18,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-01-07 05:06:18,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857775625] [2021-01-07 05:06:18,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993587791] [2021-01-07 05:06:18,226 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:18,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-07 05:06:18,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:18,464 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-01-07 05:06:18,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:18,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 15 [2021-01-07 05:06:18,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432865154] [2021-01-07 05:06:18,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-07 05:06:18,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:18,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-07 05:06:18,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:06:18,466 INFO L87 Difference]: Start difference. First operand 484 states and 584 transitions. Second operand 16 states. [2021-01-07 05:06:19,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:19,395 INFO L93 Difference]: Finished difference Result 588 states and 681 transitions. [2021-01-07 05:06:19,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-07 05:06:19,396 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 63 [2021-01-07 05:06:19,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:19,399 INFO L225 Difference]: With dead ends: 588 [2021-01-07 05:06:19,399 INFO L226 Difference]: Without dead ends: 539 [2021-01-07 05:06:19,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=218, Invalid=774, Unknown=0, NotChecked=0, Total=992 [2021-01-07 05:06:19,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-01-07 05:06:19,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 435. [2021-01-07 05:06:19,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2021-01-07 05:06:19,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 515 transitions. [2021-01-07 05:06:19,411 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 515 transitions. Word has length 63 [2021-01-07 05:06:19,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:19,412 INFO L481 AbstractCegarLoop]: Abstraction has 435 states and 515 transitions. [2021-01-07 05:06:19,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-07 05:06:19,412 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 515 transitions. [2021-01-07 05:06:19,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-01-07 05:06:19,413 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:19,413 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 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 05:06:19,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:19,627 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:06:19,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:19,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1912649417, now seen corresponding path program 7 times [2021-01-07 05:06:19,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:19,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022575045] [2021-01-07 05:06:19,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:20,039 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 11 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:06:20,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022575045] [2021-01-07 05:06:20,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174862937] [2021-01-07 05:06:20,039 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:20,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 59 conjunts are in the unsatisfiable core [2021-01-07 05:06:20,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:20,162 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 05:06:20,164 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:20,170 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:20,170 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:06:20,171 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-07 05:06:20,487 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 05:06:20,488 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:20,503 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:20,505 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 05:06:20,505 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2021-01-07 05:06:20,572 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 05:06:20,574 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:20,587 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:20,589 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-01-07 05:06:20,590 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:38, output treesize:34 [2021-01-07 05:06:21,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:06:21,424 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 05:06:21,426 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:21,441 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:21,445 INFO L547 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:06:21,445 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:49, output treesize:3 [2021-01-07 05:06:21,483 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 11 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:06:21,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:21,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 33 [2021-01-07 05:06:21,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727921600] [2021-01-07 05:06:21,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-01-07 05:06:21,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:21,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-01-07 05:06:21,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=977, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 05:06:21,485 INFO L87 Difference]: Start difference. First operand 435 states and 515 transitions. Second operand 33 states. [2021-01-07 05:06:24,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:24,350 INFO L93 Difference]: Finished difference Result 720 states and 832 transitions. [2021-01-07 05:06:24,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-07 05:06:24,350 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 65 [2021-01-07 05:06:24,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:24,352 INFO L225 Difference]: With dead ends: 720 [2021-01-07 05:06:24,353 INFO L226 Difference]: Without dead ends: 644 [2021-01-07 05:06:24,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=281, Invalid=2169, Unknown=0, NotChecked=0, Total=2450 [2021-01-07 05:06:24,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2021-01-07 05:06:24,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 611. [2021-01-07 05:06:24,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2021-01-07 05:06:24,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 723 transitions. [2021-01-07 05:06:24,380 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 723 transitions. Word has length 65 [2021-01-07 05:06:24,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:24,382 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 723 transitions. [2021-01-07 05:06:24,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2021-01-07 05:06:24,383 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 723 transitions. [2021-01-07 05:06:24,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-01-07 05:06:24,386 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:24,386 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:24,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-01-07 05:06:24,601 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:06:24,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:24,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1370877155, now seen corresponding path program 2 times [2021-01-07 05:06:24,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:24,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669283] [2021-01-07 05:06:24,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-01-07 05:06:24,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669283] [2021-01-07 05:06:24,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626942464] [2021-01-07 05:06:24,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:24,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:06:24,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:06:24,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 100 conjunts are in the unsatisfiable core [2021-01-07 05:06:24,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:25,028 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:25,029 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 05:06:25,030 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:25,072 INFO L625 ElimStorePlain]: treesize reduction 10, result has 70.6 percent of original size [2021-01-07 05:06:25,073 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:06:25,073 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:24 [2021-01-07 05:06:25,256 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:06:25,331 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 05:06:25,332 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:25,339 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 05:06:25,339 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:25,368 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:25,369 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-01-07 05:06:25,369 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:55, output treesize:47 [2021-01-07 05:06:25,657 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2021-01-07 05:06:25,657 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:06:26,220 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2021-01-07 05:06:26,220 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:06:26,222 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2021-01-07 05:06:26,222 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:06:26,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:06:26,247 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:26,248 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-01-07 05:06:26,250 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:26,298 INFO L625 ElimStorePlain]: treesize reduction 6, result has 88.9 percent of original size [2021-01-07 05:06:26,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:06:26,327 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:26,328 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 48 [2021-01-07 05:06:26,330 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:26,369 INFO L625 ElimStorePlain]: treesize reduction 18, result has 58.1 percent of original size [2021-01-07 05:06:26,371 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-01-07 05:06:26,371 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:78, output treesize:17 [2021-01-07 05:06:26,737 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:06:26,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:26,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 20] total 31 [2021-01-07 05:06:26,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541440803] [2021-01-07 05:06:26,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-01-07 05:06:26,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:26,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-01-07 05:06:26,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=907, Unknown=0, NotChecked=0, Total=992 [2021-01-07 05:06:26,740 INFO L87 Difference]: Start difference. First operand 611 states and 723 transitions. Second operand 32 states. [2021-01-07 05:06:27,889 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2021-01-07 05:06:28,151 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2021-01-07 05:06:28,415 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2021-01-07 05:06:28,681 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2021-01-07 05:06:28,924 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2021-01-07 05:06:29,318 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2021-01-07 05:06:29,851 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2021-01-07 05:06:30,083 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2021-01-07 05:06:30,601 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2021-01-07 05:06:32,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:32,275 INFO L93 Difference]: Finished difference Result 674 states and 775 transitions. [2021-01-07 05:06:32,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-07 05:06:32,277 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 68 [2021-01-07 05:06:32,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:32,281 INFO L225 Difference]: With dead ends: 674 [2021-01-07 05:06:32,281 INFO L226 Difference]: Without dead ends: 606 [2021-01-07 05:06:32,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=467, Invalid=2395, Unknown=0, NotChecked=0, Total=2862 [2021-01-07 05:06:32,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-01-07 05:06:32,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 525. [2021-01-07 05:06:32,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2021-01-07 05:06:32,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 625 transitions. [2021-01-07 05:06:32,293 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 625 transitions. Word has length 68 [2021-01-07 05:06:32,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:32,293 INFO L481 AbstractCegarLoop]: Abstraction has 525 states and 625 transitions. [2021-01-07 05:06:32,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2021-01-07 05:06:32,293 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 625 transitions. [2021-01-07 05:06:32,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-01-07 05:06:32,294 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:32,294 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:32,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:32,509 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:06:32,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:32,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1333006979, now seen corresponding path program 2 times [2021-01-07 05:06:32,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:32,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253691421] [2021-01-07 05:06:32,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:32,746 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-01-07 05:06:32,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253691421] [2021-01-07 05:06:32,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702535808] [2021-01-07 05:06:32,747 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:32,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:06:32,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:06:32,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 64 conjunts are in the unsatisfiable core [2021-01-07 05:06:32,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:32,903 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_35|], 1=[|v_#valid_42|]} [2021-01-07 05:06:32,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:06:32,908 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 05:06:32,909 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:32,920 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:32,925 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 05:06:32,927 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:32,939 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:32,940 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:06:32,941 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:16 [2021-01-07 05:06:33,303 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-01-07 05:06:33,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:33,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-01-07 05:06:33,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946707502] [2021-01-07 05:06:33,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-07 05:06:33,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:33,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-07 05:06:33,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:06:33,305 INFO L87 Difference]: Start difference. First operand 525 states and 625 transitions. Second operand 21 states. [2021-01-07 05:06:34,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:34,276 INFO L93 Difference]: Finished difference Result 729 states and 860 transitions. [2021-01-07 05:06:34,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-07 05:06:34,277 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 69 [2021-01-07 05:06:34,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:34,280 INFO L225 Difference]: With dead ends: 729 [2021-01-07 05:06:34,280 INFO L226 Difference]: Without dead ends: 729 [2021-01-07 05:06:34,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2021-01-07 05:06:34,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-01-07 05:06:34,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 548. [2021-01-07 05:06:34,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 548 states. [2021-01-07 05:06:34,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 660 transitions. [2021-01-07 05:06:34,299 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 660 transitions. Word has length 69 [2021-01-07 05:06:34,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:34,300 INFO L481 AbstractCegarLoop]: Abstraction has 548 states and 660 transitions. [2021-01-07 05:06:34,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-07 05:06:34,300 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 660 transitions. [2021-01-07 05:06:34,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-01-07 05:06:34,301 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:34,301 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 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 05:06:34,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-01-07 05:06:34,516 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:06:34,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:34,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1188026188, now seen corresponding path program 8 times [2021-01-07 05:06:34,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:34,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385685842] [2021-01-07 05:06:34,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:34,777 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 18 proven. 65 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:06:34,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385685842] [2021-01-07 05:06:34,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064497195] [2021-01-07 05:06:34,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:34,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:06:34,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:06:34,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 52 conjunts are in the unsatisfiable core [2021-01-07 05:06:34,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:35,195 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 28 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:06:35,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:35,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 23 [2021-01-07 05:06:35,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140862244] [2021-01-07 05:06:35,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-07 05:06:35,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:35,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-07 05:06:35,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:06:35,198 INFO L87 Difference]: Start difference. First operand 548 states and 660 transitions. Second operand 24 states. [2021-01-07 05:06:36,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:36,538 INFO L93 Difference]: Finished difference Result 673 states and 782 transitions. [2021-01-07 05:06:36,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-07 05:06:36,539 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 69 [2021-01-07 05:06:36,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:36,544 INFO L225 Difference]: With dead ends: 673 [2021-01-07 05:06:36,544 INFO L226 Difference]: Without dead ends: 673 [2021-01-07 05:06:36,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=229, Invalid=827, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 05:06:36,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2021-01-07 05:06:36,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 611. [2021-01-07 05:06:36,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2021-01-07 05:06:36,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 738 transitions. [2021-01-07 05:06:36,558 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 738 transitions. Word has length 69 [2021-01-07 05:06:36,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:36,558 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 738 transitions. [2021-01-07 05:06:36,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-01-07 05:06:36,558 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 738 transitions. [2021-01-07 05:06:36,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-07 05:06:36,559 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:36,559 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:36,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:36,774 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:06:36,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:36,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1119450658, now seen corresponding path program 1 times [2021-01-07 05:06:36,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:36,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508830595] [2021-01-07 05:06:36,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:37,026 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-01-07 05:06:37,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508830595] [2021-01-07 05:06:37,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177083295] [2021-01-07 05:06:37,027 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:37,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 39 conjunts are in the unsatisfiable core [2021-01-07 05:06:37,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:37,332 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-01-07 05:06:37,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:37,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 19 [2021-01-07 05:06:37,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788495673] [2021-01-07 05:06:37,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-07 05:06:37,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:37,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-07 05:06:37,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:06:37,335 INFO L87 Difference]: Start difference. First operand 611 states and 738 transitions. Second operand 20 states. [2021-01-07 05:06:38,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:38,074 INFO L93 Difference]: Finished difference Result 1121 states and 1317 transitions. [2021-01-07 05:06:38,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-07 05:06:38,075 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 71 [2021-01-07 05:06:38,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:38,080 INFO L225 Difference]: With dead ends: 1121 [2021-01-07 05:06:38,080 INFO L226 Difference]: Without dead ends: 1121 [2021-01-07 05:06:38,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-01-07 05:06:38,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2021-01-07 05:06:38,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 653. [2021-01-07 05:06:38,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2021-01-07 05:06:38,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 793 transitions. [2021-01-07 05:06:38,096 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 793 transitions. Word has length 71 [2021-01-07 05:06:38,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:38,097 INFO L481 AbstractCegarLoop]: Abstraction has 653 states and 793 transitions. [2021-01-07 05:06:38,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-07 05:06:38,097 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 793 transitions. [2021-01-07 05:06:38,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-07 05:06:38,098 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:38,098 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:38,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-01-07 05:06:38,313 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:06:38,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:38,314 INFO L82 PathProgramCache]: Analyzing trace with hash -2050255873, now seen corresponding path program 1 times [2021-01-07 05:06:38,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:38,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564209866] [2021-01-07 05:06:38,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:38,550 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-01-07 05:06:38,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564209866] [2021-01-07 05:06:38,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434874936] [2021-01-07 05:06:38,551 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 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:38,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 48 conjunts are in the unsatisfiable core [2021-01-07 05:06:38,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:38,684 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_36|], 1=[|v_#valid_43|]} [2021-01-07 05:06:38,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:06:38,690 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 05:06:38,691 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:38,703 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:38,710 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 05:06:38,712 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:38,724 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:38,726 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 05:06:38,727 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2021-01-07 05:06:39,160 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-01-07 05:06:39,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:39,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-01-07 05:06:39,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562775890] [2021-01-07 05:06:39,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-07 05:06:39,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:39,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-07 05:06:39,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2021-01-07 05:06:39,165 INFO L87 Difference]: Start difference. First operand 653 states and 793 transitions. Second operand 22 states. [2021-01-07 05:06:40,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:40,339 INFO L93 Difference]: Finished difference Result 869 states and 1037 transitions. [2021-01-07 05:06:40,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-07 05:06:40,340 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 73 [2021-01-07 05:06:40,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:40,343 INFO L225 Difference]: With dead ends: 869 [2021-01-07 05:06:40,343 INFO L226 Difference]: Without dead ends: 869 [2021-01-07 05:06:40,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=206, Invalid=916, Unknown=0, NotChecked=0, Total=1122 [2021-01-07 05:06:40,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2021-01-07 05:06:40,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 656. [2021-01-07 05:06:40,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2021-01-07 05:06:40,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 796 transitions. [2021-01-07 05:06:40,360 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 796 transitions. Word has length 73 [2021-01-07 05:06:40,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:40,360 INFO L481 AbstractCegarLoop]: Abstraction has 656 states and 796 transitions. [2021-01-07 05:06:40,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-07 05:06:40,360 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 796 transitions. [2021-01-07 05:06:40,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-07 05:06:40,361 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:40,362 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:06:40,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:40,575 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:06:40,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:40,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1419954798, now seen corresponding path program 1 times [2021-01-07 05:06:40,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:40,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627375028] [2021-01-07 05:06:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:40,991 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-01-07 05:06:40,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627375028] [2021-01-07 05:06:40,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106021693] [2021-01-07 05:06:40,991 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 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:41,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 101 conjunts are in the unsatisfiable core [2021-01-07 05:06:41,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:41,127 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 05:06:41,128 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:41,135 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:41,136 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:06:41,136 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-07 05:06:41,456 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 05:06:41,457 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:41,467 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:41,468 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 05:06:41,469 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2021-01-07 05:06:41,533 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 05:06:41,534 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:41,548 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:41,549 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 05:06:41,550 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:34 [2021-01-07 05:06:42,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:06:42,754 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:42,754 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 28 [2021-01-07 05:06:42,756 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:42,778 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:42,781 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 05:06:42,782 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:64, output treesize:14 [2021-01-07 05:06:42,879 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 37 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-01-07 05:06:42,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:42,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22] total 36 [2021-01-07 05:06:42,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856068240] [2021-01-07 05:06:42,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-01-07 05:06:42,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:42,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-01-07 05:06:42,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2021-01-07 05:06:42,880 INFO L87 Difference]: Start difference. First operand 656 states and 796 transitions. Second operand 36 states. [2021-01-07 05:06:44,127 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-01-07 05:06:44,312 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-01-07 05:06:44,501 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-01-07 05:06:44,912 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2021-01-07 05:06:45,574 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2021-01-07 05:06:45,869 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2021-01-07 05:06:46,153 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2021-01-07 05:06:46,409 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-01-07 05:06:46,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:06:46,433 INFO L93 Difference]: Finished difference Result 683 states and 818 transitions. [2021-01-07 05:06:46,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-07 05:06:46,434 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 74 [2021-01-07 05:06:46,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:06:46,436 INFO L225 Difference]: With dead ends: 683 [2021-01-07 05:06:46,436 INFO L226 Difference]: Without dead ends: 664 [2021-01-07 05:06:46,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=385, Invalid=2807, Unknown=0, NotChecked=0, Total=3192 [2021-01-07 05:06:46,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-01-07 05:06:46,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 656. [2021-01-07 05:06:46,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2021-01-07 05:06:46,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 789 transitions. [2021-01-07 05:06:46,448 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 789 transitions. Word has length 74 [2021-01-07 05:06:46,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:06:46,448 INFO L481 AbstractCegarLoop]: Abstraction has 656 states and 789 transitions. [2021-01-07 05:06:46,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-01-07 05:06:46,448 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 789 transitions. [2021-01-07 05:06:46,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-07 05:06:46,449 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:06:46,449 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 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 05:06:46,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-01-07 05:06:46,664 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:06:46,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:06:46,665 INFO L82 PathProgramCache]: Analyzing trace with hash 136339069, now seen corresponding path program 9 times [2021-01-07 05:06:46,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:06:46,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487756289] [2021-01-07 05:06:46,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:06:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:06:47,290 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 14 proven. 91 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:06:47,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487756289] [2021-01-07 05:06:47,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114486062] [2021-01-07 05:06:47,291 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 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:06:47,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-01-07 05:06:47,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:06:47,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 69 conjunts are in the unsatisfiable core [2021-01-07 05:06:47,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:06:47,470 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 05:06:47,471 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:47,476 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:47,477 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:06:47,478 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-07 05:06:47,854 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 05:06:47,855 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:47,865 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:47,866 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 05:06:47,866 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2021-01-07 05:06:47,948 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 05:06:47,949 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:06:47,962 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:47,964 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-01-07 05:06:47,965 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:35, output treesize:31 [2021-01-07 05:06:48,910 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:06:48,911 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2021-01-07 05:06:48,912 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:06:48,935 INFO L625 ElimStorePlain]: treesize reduction 5, result has 73.7 percent of original size [2021-01-07 05:06:48,938 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:06:48,938 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:38, output treesize:3 [2021-01-07 05:06:48,969 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 14 proven. 91 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:06:48,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:06:48,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 36 [2021-01-07 05:06:48,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023278981] [2021-01-07 05:06:48,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-01-07 05:06:48,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:06:48,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-01-07 05:06:48,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1173, Unknown=0, NotChecked=0, Total=1260 [2021-01-07 05:06:48,971 INFO L87 Difference]: Start difference. First operand 656 states and 789 transitions. Second operand 36 states. [2021-01-07 05:06:55,130 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2021-01-07 05:06:59,279 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:07:03,468 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:07:07,791 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:07:12,182 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:07:16,649 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-01-07 05:07:20,890 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-01-07 05:07:23,749 WARN L197 SmtUtils]: Spent 2.74 s on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2021-01-07 05:07:24,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:24,391 INFO L93 Difference]: Finished difference Result 1045 states and 1227 transitions. [2021-01-07 05:07:24,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-07 05:07:24,392 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 74 [2021-01-07 05:07:24,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:24,395 INFO L225 Difference]: With dead ends: 1045 [2021-01-07 05:07:24,395 INFO L226 Difference]: Without dead ends: 959 [2021-01-07 05:07:24,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 34.0s TimeCoverageRelationStatistics Valid=314, Invalid=2766, Unknown=0, NotChecked=0, Total=3080 [2021-01-07 05:07:24,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-01-07 05:07:24,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 908. [2021-01-07 05:07:24,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 908 states. [2021-01-07 05:07:24,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1094 transitions. [2021-01-07 05:07:24,411 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1094 transitions. Word has length 74 [2021-01-07 05:07:24,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:24,412 INFO L481 AbstractCegarLoop]: Abstraction has 908 states and 1094 transitions. [2021-01-07 05:07:24,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-01-07 05:07:24,412 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1094 transitions. [2021-01-07 05:07:24,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-01-07 05:07:24,413 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:24,413 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:24,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-01-07 05:07:24,629 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:07:24,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:24,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1093789664, now seen corresponding path program 1 times [2021-01-07 05:07:24,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:24,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003351020] [2021-01-07 05:07:24,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:24,937 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-01-07 05:07:24,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003351020] [2021-01-07 05:07:24,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102895058] [2021-01-07 05:07:24,938 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 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:25,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 47 conjunts are in the unsatisfiable core [2021-01-07 05:07:25,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:25,317 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 18 proven. 14 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-01-07 05:07:25,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:25,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 20 [2021-01-07 05:07:25,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362854314] [2021-01-07 05:07:25,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-07 05:07:25,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:25,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-07 05:07:25,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:07:25,318 INFO L87 Difference]: Start difference. First operand 908 states and 1094 transitions. Second operand 21 states. [2021-01-07 05:07:26,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:26,211 INFO L93 Difference]: Finished difference Result 1769 states and 2067 transitions. [2021-01-07 05:07:26,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-07 05:07:26,215 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 75 [2021-01-07 05:07:26,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:26,221 INFO L225 Difference]: With dead ends: 1769 [2021-01-07 05:07:26,221 INFO L226 Difference]: Without dead ends: 1766 [2021-01-07 05:07:26,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2021-01-07 05:07:26,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2021-01-07 05:07:26,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 913. [2021-01-07 05:07:26,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 913 states. [2021-01-07 05:07:26,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1105 transitions. [2021-01-07 05:07:26,237 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1105 transitions. Word has length 75 [2021-01-07 05:07:26,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:26,238 INFO L481 AbstractCegarLoop]: Abstraction has 913 states and 1105 transitions. [2021-01-07 05:07:26,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-07 05:07:26,238 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1105 transitions. [2021-01-07 05:07:26,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-01-07 05:07:26,239 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:26,240 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:26,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:26,454 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:07:26,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:26,455 INFO L82 PathProgramCache]: Analyzing trace with hash -839159297, now seen corresponding path program 3 times [2021-01-07 05:07:26,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:26,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911776728] [2021-01-07 05:07:26,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:26,655 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-01-07 05:07:26,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911776728] [2021-01-07 05:07:26,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2584131] [2021-01-07 05:07:26,656 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 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:26,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-07 05:07:26,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:26,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 100 conjunts are in the unsatisfiable core [2021-01-07 05:07:26,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:26,800 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_37|], 1=[|v_#valid_46|]} [2021-01-07 05:07:26,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:07:26,807 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 05:07:26,809 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:26,823 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:26,829 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 05:07:26,831 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:26,846 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:26,847 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:26,847 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:21 [2021-01-07 05:07:26,956 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 05:07:26,957 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:26,975 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:26,977 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 05:07:26,977 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:31 [2021-01-07 05:07:27,041 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 05:07:27,043 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:27,064 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:27,066 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 05:07:27,066 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:42, output treesize:38 [2021-01-07 05:07:27,951 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:27,951 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 46 treesize of output 42 [2021-01-07 05:07:27,953 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:27,977 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:27,979 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:07:27,981 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:07:27,981 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:56, output treesize:33 [2021-01-07 05:07:28,398 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-01-07 05:07:28,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:28,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16] total 25 [2021-01-07 05:07:28,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942466120] [2021-01-07 05:07:28,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-07 05:07:28,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:28,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-07 05:07:28,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=548, Unknown=0, NotChecked=0, Total=600 [2021-01-07 05:07:28,400 INFO L87 Difference]: Start difference. First operand 913 states and 1105 transitions. Second operand 25 states. [2021-01-07 05:07:30,752 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-01-07 05:07:31,032 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-01-07 05:07:31,753 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-01-07 05:07:32,041 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-01-07 05:07:32,269 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-01-07 05:07:32,647 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 96 [2021-01-07 05:07:32,931 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-01-07 05:07:33,418 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2021-01-07 05:07:33,970 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2021-01-07 05:07:34,175 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-01-07 05:07:34,357 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-01-07 05:07:34,609 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-01-07 05:07:36,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:07:36,159 INFO L93 Difference]: Finished difference Result 2336 states and 2709 transitions. [2021-01-07 05:07:36,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-07 05:07:36,160 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 77 [2021-01-07 05:07:36,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:07:36,171 INFO L225 Difference]: With dead ends: 2336 [2021-01-07 05:07:36,171 INFO L226 Difference]: Without dead ends: 2303 [2021-01-07 05:07:36,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=532, Invalid=2548, Unknown=0, NotChecked=0, Total=3080 [2021-01-07 05:07:36,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2021-01-07 05:07:36,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 1340. [2021-01-07 05:07:36,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2021-01-07 05:07:36,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1634 transitions. [2021-01-07 05:07:36,192 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1634 transitions. Word has length 77 [2021-01-07 05:07:36,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:07:36,193 INFO L481 AbstractCegarLoop]: Abstraction has 1340 states and 1634 transitions. [2021-01-07 05:07:36,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-01-07 05:07:36,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1634 transitions. [2021-01-07 05:07:36,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-01-07 05:07:36,194 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:07:36,195 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:07:36,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-01-07 05:07:36,409 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:07:36,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:07:36,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1083596167, now seen corresponding path program 3 times [2021-01-07 05:07:36,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:07:36,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140747533] [2021-01-07 05:07:36,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:07:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:07:36,729 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 18 proven. 57 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-01-07 05:07:36,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140747533] [2021-01-07 05:07:36,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125672412] [2021-01-07 05:07:36,730 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 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:07:36,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-07 05:07:36,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:07:36,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 105 conjunts are in the unsatisfiable core [2021-01-07 05:07:36,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:07:36,885 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_38|], 3=[|v_#valid_47|]} [2021-01-07 05:07:36,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:07:36,891 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 05:07:36,892 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:36,908 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:36,926 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:07:36,926 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-01-07 05:07:36,928 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:36,944 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:36,945 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:36,945 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:31 [2021-01-07 05:07:37,238 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 13 treesize of output 9 [2021-01-07 05:07:37,239 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:37,264 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:37,266 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 05:07:37,266 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:47, output treesize:34 [2021-01-07 05:07:37,346 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 13 treesize of output 9 [2021-01-07 05:07:37,347 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:37,370 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:37,372 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 05:07:37,372 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:47, output treesize:34 [2021-01-07 05:07:37,442 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 13 treesize of output 9 [2021-01-07 05:07:37,443 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:37,464 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:37,467 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 05:07:37,467 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:47, output treesize:34 [2021-01-07 05:07:37,610 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 05:07:37,611 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:37,631 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:37,632 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:37,632 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:41, output treesize:37 [2021-01-07 05:07:37,703 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 05:07:37,704 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:37,726 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:37,727 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:07:37,727 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:46 [2021-01-07 05:07:38,583 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 11 treesize of output 7 [2021-01-07 05:07:38,585 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:07:38,605 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:38,607 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 05:07:38,607 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:58, output treesize:48 [2021-01-07 05:07:38,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:07:38,868 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:38,869 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2021-01-07 05:07:38,872 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:07:38,895 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:07:38,897 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 05:07:38,897 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:65, output treesize:37 [2021-01-07 05:07:39,566 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 38 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-01-07 05:07:39,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:07:39,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 24] total 37 [2021-01-07 05:07:39,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149077443] [2021-01-07 05:07:39,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-01-07 05:07:39,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:07:39,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-01-07 05:07:39,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1311, Unknown=0, NotChecked=0, Total=1406 [2021-01-07 05:07:39,567 INFO L87 Difference]: Start difference. First operand 1340 states and 1634 transitions. Second operand 38 states. [2021-01-07 05:07:44,792 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-01-07 05:07:45,013 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2021-01-07 05:07:45,431 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2021-01-07 05:07:45,779 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2021-01-07 05:07:46,196 WARN L197 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2021-01-07 05:07:46,576 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2021-01-07 05:07:46,995 WARN L197 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2021-01-07 05:07:47,398 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2021-01-07 05:07:47,827 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2021-01-07 05:07:48,251 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 85 [2021-01-07 05:07:48,894 WARN L197 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 85 [2021-01-07 05:07:49,366 WARN L197 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 90 [2021-01-07 05:07:49,832 WARN L197 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 93 [2021-01-07 05:07:50,463 WARN L197 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 98 [2021-01-07 05:07:50,845 WARN L197 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2021-01-07 05:07:51,342 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 92 [2021-01-07 05:07:51,798 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2021-01-07 05:07:52,315 WARN L197 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 91 [2021-01-07 05:07:52,918 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 85 [2021-01-07 05:07:53,520 WARN L197 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 102 [2021-01-07 05:07:54,089 WARN L197 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 96 [2021-01-07 05:07:54,582 WARN L197 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2021-01-07 05:07:55,180 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2021-01-07 05:07:55,713 WARN L197 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 91 [2021-01-07 05:07:56,680 WARN L197 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 102 [2021-01-07 05:07:57,246 WARN L197 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 96 [2021-01-07 05:07:57,874 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2021-01-07 05:07:58,366 WARN L197 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2021-01-07 05:07:58,933 WARN L197 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 91 [2021-01-07 05:07:59,927 WARN L197 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 102 [2021-01-07 05:08:00,520 WARN L197 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 96 [2021-01-07 05:08:01,147 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 85 [2021-01-07 05:08:01,637 WARN L197 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 92 [2021-01-07 05:08:02,070 WARN L197 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2021-01-07 05:08:02,765 WARN L197 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 107 [2021-01-07 05:08:03,291 WARN L197 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 91 [2021-01-07 05:08:04,187 WARN L197 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 98 [2021-01-07 05:08:04,744 WARN L197 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 91 [2021-01-07 05:08:05,146 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2021-01-07 05:08:05,646 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-01-07 05:08:06,428 WARN L197 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 107 [2021-01-07 05:08:07,235 WARN L197 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 97 [2021-01-07 05:08:07,858 WARN L197 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 104 [2021-01-07 05:08:08,379 WARN L197 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2021-01-07 05:08:09,067 WARN L197 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 109 [2021-01-07 05:08:09,817 WARN L197 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 95 [2021-01-07 05:08:10,537 WARN L197 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 107 [2021-01-07 05:08:11,364 WARN L197 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 106 [2021-01-07 05:08:12,301 WARN L197 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 102 [2021-01-07 05:08:13,509 WARN L197 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 108 [2021-01-07 05:08:14,043 WARN L197 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 104 [2021-01-07 05:08:14,740 WARN L197 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 115 [2021-01-07 05:08:15,391 WARN L197 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 111 [2021-01-07 05:08:16,193 WARN L197 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 120 [2021-01-07 05:08:16,985 WARN L197 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 116 [2021-01-07 05:08:17,672 WARN L197 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 102 [2021-01-07 05:08:18,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:18,156 INFO L93 Difference]: Finished difference Result 1872 states and 2191 transitions. [2021-01-07 05:08:18,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-01-07 05:08:18,157 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 77 [2021-01-07 05:08:18,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:18,163 INFO L225 Difference]: With dead ends: 1872 [2021-01-07 05:08:18,164 INFO L226 Difference]: Without dead ends: 1674 [2021-01-07 05:08:18,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3678 ImplicationChecksByTransitivity, 32.2s TimeCoverageRelationStatistics Valid=2585, Invalid=13927, Unknown=0, NotChecked=0, Total=16512 [2021-01-07 05:08:18,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2021-01-07 05:08:18,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1254. [2021-01-07 05:08:18,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1254 states. [2021-01-07 05:08:18,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1523 transitions. [2021-01-07 05:08:18,185 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1523 transitions. Word has length 77 [2021-01-07 05:08:18,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:18,186 INFO L481 AbstractCegarLoop]: Abstraction has 1254 states and 1523 transitions. [2021-01-07 05:08:18,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2021-01-07 05:08:18,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1523 transitions. [2021-01-07 05:08:18,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-07 05:08:18,188 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:18,188 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:18,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:18,397 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:08:18,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:18,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1469280949, now seen corresponding path program 2 times [2021-01-07 05:08:18,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:18,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462663957] [2021-01-07 05:08:18,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:18,743 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-01-07 05:08:18,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462663957] [2021-01-07 05:08:18,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781636405] [2021-01-07 05:08:18,743 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 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:18,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:08:18,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:18,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 45 conjunts are in the unsatisfiable core [2021-01-07 05:08:18,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:19,268 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-01-07 05:08:19,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:19,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2021-01-07 05:08:19,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008100222] [2021-01-07 05:08:19,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-07 05:08:19,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:19,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-07 05:08:19,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2021-01-07 05:08:19,270 INFO L87 Difference]: Start difference. First operand 1254 states and 1523 transitions. Second operand 22 states. [2021-01-07 05:08:20,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:20,898 INFO L93 Difference]: Finished difference Result 1679 states and 1994 transitions. [2021-01-07 05:08:20,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-07 05:08:20,899 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 78 [2021-01-07 05:08:20,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:20,905 INFO L225 Difference]: With dead ends: 1679 [2021-01-07 05:08:20,905 INFO L226 Difference]: Without dead ends: 1679 [2021-01-07 05:08:20,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=237, Invalid=819, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 05:08:20,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2021-01-07 05:08:20,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 1312. [2021-01-07 05:08:20,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1312 states. [2021-01-07 05:08:20,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1589 transitions. [2021-01-07 05:08:20,922 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1589 transitions. Word has length 78 [2021-01-07 05:08:20,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:20,922 INFO L481 AbstractCegarLoop]: Abstraction has 1312 states and 1589 transitions. [2021-01-07 05:08:20,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-07 05:08:20,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1589 transitions. [2021-01-07 05:08:20,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-07 05:08:20,924 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:20,924 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:21,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-01-07 05:08:21,139 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:08:21,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:21,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1542070618, now seen corresponding path program 10 times [2021-01-07 05:08:21,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:21,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46332888] [2021-01-07 05:08:21,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:21,557 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 32 proven. 94 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:08:21,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46332888] [2021-01-07 05:08:21,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572265397] [2021-01-07 05:08:21,558 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 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:21,651 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:08:21,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:21,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 60 conjunts are in the unsatisfiable core [2021-01-07 05:08:21,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:22,084 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 50 proven. 76 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:08:22,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:22,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 25 [2021-01-07 05:08:22,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149387510] [2021-01-07 05:08:22,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-07 05:08:22,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:22,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-07 05:08:22,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2021-01-07 05:08:22,086 INFO L87 Difference]: Start difference. First operand 1312 states and 1589 transitions. Second operand 26 states. [2021-01-07 05:08:24,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:24,302 INFO L93 Difference]: Finished difference Result 1579 states and 1873 transitions. [2021-01-07 05:08:24,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-07 05:08:24,308 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 78 [2021-01-07 05:08:24,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:24,315 INFO L225 Difference]: With dead ends: 1579 [2021-01-07 05:08:24,315 INFO L226 Difference]: Without dead ends: 1579 [2021-01-07 05:08:24,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=253, Invalid=937, Unknown=0, NotChecked=0, Total=1190 [2021-01-07 05:08:24,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-01-07 05:08:24,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1442. [2021-01-07 05:08:24,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1442 states. [2021-01-07 05:08:24,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 1751 transitions. [2021-01-07 05:08:24,339 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 1751 transitions. Word has length 78 [2021-01-07 05:08:24,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:24,339 INFO L481 AbstractCegarLoop]: Abstraction has 1442 states and 1751 transitions. [2021-01-07 05:08:24,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-01-07 05:08:24,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 1751 transitions. [2021-01-07 05:08:24,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-01-07 05:08:24,342 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:24,342 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:24,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-01-07 05:08:24,556 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:08:24,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:24,557 INFO L82 PathProgramCache]: Analyzing trace with hash -2082933016, now seen corresponding path program 2 times [2021-01-07 05:08:24,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:24,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5236577] [2021-01-07 05:08:24,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:24,797 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-01-07 05:08:24,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5236577] [2021-01-07 05:08:24,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384006045] [2021-01-07 05:08:24,798 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 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:24,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:08:24,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:24,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 48 conjunts are in the unsatisfiable core [2021-01-07 05:08:24,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:25,426 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-01-07 05:08:25,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:25,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 28 [2021-01-07 05:08:25,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344468544] [2021-01-07 05:08:25,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-07 05:08:25,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:25,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-07 05:08:25,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2021-01-07 05:08:25,428 INFO L87 Difference]: Start difference. First operand 1442 states and 1751 transitions. Second operand 28 states. [2021-01-07 05:08:29,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:29,503 INFO L93 Difference]: Finished difference Result 3381 states and 3910 transitions. [2021-01-07 05:08:29,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-01-07 05:08:29,504 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 82 [2021-01-07 05:08:29,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:29,515 INFO L225 Difference]: With dead ends: 3381 [2021-01-07 05:08:29,515 INFO L226 Difference]: Without dead ends: 3359 [2021-01-07 05:08:29,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=670, Invalid=3362, Unknown=0, NotChecked=0, Total=4032 [2021-01-07 05:08:29,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3359 states. [2021-01-07 05:08:29,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3359 to 1516. [2021-01-07 05:08:29,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2021-01-07 05:08:29,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 1826 transitions. [2021-01-07 05:08:29,556 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 1826 transitions. Word has length 82 [2021-01-07 05:08:29,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:29,557 INFO L481 AbstractCegarLoop]: Abstraction has 1516 states and 1826 transitions. [2021-01-07 05:08:29,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-01-07 05:08:29,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 1826 transitions. [2021-01-07 05:08:29,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-01-07 05:08:29,560 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:29,560 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:29,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:29,775 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 05:08:29,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:29,776 INFO L82 PathProgramCache]: Analyzing trace with hash -86779040, now seen corresponding path program 3 times [2021-01-07 05:08:29,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:29,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674418412] [2021-01-07 05:08:29,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:30,339 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 1 proven. 43 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-01-07 05:08:30,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674418412] [2021-01-07 05:08:30,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734533210] [2021-01-07 05:08:30,339 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 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:30,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-07 05:08:30,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:30,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 97 conjunts are in the unsatisfiable core [2021-01-07 05:08:30,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:30,495 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_39|], 1=[|v_#valid_48|]} [2021-01-07 05:08:30,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:08:30,501 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 05:08:30,503 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:30,520 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:30,527 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 05:08:30,529 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:30,542 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:30,543 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:30,543 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:21 [2021-01-07 05:08:30,684 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 05:08:30,685 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:30,698 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:30,699 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:30,699 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2021-01-07 05:08:30,765 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 05:08:30,767 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:30,780 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:30,781 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:30,782 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2021-01-07 05:08:31,723 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:31,723 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 45 treesize of output 41 [2021-01-07 05:08:31,726 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:31,746 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:31,748 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 05:08:31,748 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:52, output treesize:30 [2021-01-07 05:08:32,179 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-01-07 05:08:32,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:32,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 33 [2021-01-07 05:08:32,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265176165] [2021-01-07 05:08:32,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-01-07 05:08:32,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:32,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-01-07 05:08:32,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 05:08:32,181 INFO L87 Difference]: Start difference. First operand 1516 states and 1826 transitions. Second operand 33 states. [2021-01-07 05:08:34,523 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2021-01-07 05:08:34,992 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-01-07 05:08:35,408 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-01-07 05:08:35,848 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-01-07 05:08:36,287 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2021-01-07 05:08:36,779 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-01-07 05:08:37,318 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2021-01-07 05:08:37,751 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2021-01-07 05:08:38,001 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-01-07 05:08:38,215 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-01-07 05:08:38,533 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2021-01-07 05:08:38,855 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2021-01-07 05:08:39,067 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-01-07 05:08:39,245 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-01-07 05:08:39,617 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 82 [2021-01-07 05:08:39,831 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-01-07 05:08:44,155 WARN L197 SmtUtils]: Spent 4.20 s on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2021-01-07 05:08:44,523 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2021-01-07 05:08:44,780 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-01-07 05:08:45,099 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 85 [2021-01-07 05:08:47,429 WARN L197 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2021-01-07 05:08:47,687 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-01-07 05:08:51,971 WARN L197 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-01-07 05:08:52,305 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2021-01-07 05:08:52,642 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2021-01-07 05:08:53,031 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2021-01-07 05:08:53,244 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2021-01-07 05:08:53,427 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-01-07 05:08:53,787 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 81 [2021-01-07 05:08:58,161 WARN L197 SmtUtils]: Spent 4.21 s on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2021-01-07 05:08:58,541 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2021-01-07 05:09:00,894 WARN L197 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 91 DAG size of output: 76