/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-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-fpi/sina3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 01:33:09,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 01:33:09,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 01:33:09,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 01:33:09,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 01:33:09,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 01:33:09,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 01:33:09,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 01:33:09,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 01:33:09,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 01:33:09,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 01:33:09,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 01:33:09,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 01:33:09,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 01:33:09,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 01:33:09,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 01:33:09,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 01:33:09,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 01:33:09,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 01:33:09,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 01:33:09,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 01:33:09,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 01:33:09,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 01:33:09,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 01:33:09,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 01:33:09,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 01:33:09,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 01:33:09,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 01:33:09,506 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 01:33:11,380 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 01:33:11,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 01:33:11,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 01:33:11,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 01:33:11,382 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 01:33:11,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 01:33:11,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 01:33:11,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 01:33:11,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 01:33:11,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 01:33:11,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 01:33:11,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 01:33:11,384 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 01:33:11,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 01:33:11,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 01:33:11,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 01:33:11,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 01:33:11,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:33:11,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 01:33:11,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 01:33:11,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 01:33:11,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 01:33:11,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 01:33:11,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 01:33:11,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 01:33:11,387 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 01:33:11,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 01:33:11,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 01:33:11,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 01:33:11,831 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 01:33:11,832 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 01:33:11,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/sina3.c [2020-12-23 01:33:11,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/64c2ced93/c0d8aa1e259a479ba5ff96f4691bfa92/FLAG95f6fc29a [2020-12-23 01:33:12,700 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 01:33:12,701 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-fpi/sina3.c [2020-12-23 01:33:12,711 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/64c2ced93/c0d8aa1e259a479ba5ff96f4691bfa92/FLAG95f6fc29a [2020-12-23 01:33:13,001 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/64c2ced93/c0d8aa1e259a479ba5ff96f4691bfa92 [2020-12-23 01:33:13,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 01:33:13,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 01:33:13,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 01:33:13,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 01:33:13,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 01:33:13,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:33:13" (1/1) ... [2020-12-23 01:33:13,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f045f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:33:13, skipping insertion in model container [2020-12-23 01:33:13,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:33:13" (1/1) ... [2020-12-23 01:33:13,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 01:33:13,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 01:33:13,250 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-fpi/sina3.c[588,601] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~sum~0,],[IntegerLiteral[0]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~b~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~b~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~sum~0,],[IntegerLiteral[0]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2020-12-23 01:33:13,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:33:13,291 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 01:33:13,307 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-fpi/sina3.c[588,601] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#sum~0,],base],StructAccessExpression[IdentifierExpression[~#sum~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~b~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~b~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#sum~0,],base],StructAccessExpression[IdentifierExpression[~#sum~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2020-12-23 01:33:13,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:33:13,339 INFO L208 MainTranslator]: Completed translation [2020-12-23 01:33:13,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:33:13 WrapperNode [2020-12-23 01:33:13,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 01:33:13,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 01:33:13,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 01:33:13,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 01:33:13,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:33:13" (1/1) ... [2020-12-23 01:33:13,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:33:13" (1/1) ... [2020-12-23 01:33:13,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 01:33:13,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 01:33:13,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 01:33:13,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 01:33:13,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:33:13" (1/1) ... [2020-12-23 01:33:13,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:33:13" (1/1) ... [2020-12-23 01:33:13,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:33:13" (1/1) ... [2020-12-23 01:33:13,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:33:13" (1/1) ... [2020-12-23 01:33:13,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:33:13" (1/1) ... [2020-12-23 01:33:13,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:33:13" (1/1) ... [2020-12-23 01:33:13,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:33:13" (1/1) ... [2020-12-23 01:33:13,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 01:33:13,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 01:33:13,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 01:33:13,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 01:33:13,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:33:13" (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 [2020-12-23 01:33:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 01:33:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 01:33:13,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 01:33:13,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 01:33:13,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 01:33:13,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 01:33:13,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 01:33:13,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 01:33:13,978 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 01:33:13,978 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-23 01:33:13,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:33:13 BoogieIcfgContainer [2020-12-23 01:33:13,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 01:33:13,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 01:33:13,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 01:33:13,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 01:33:13,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:33:13" (1/3) ... [2020-12-23 01:33:14,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da01818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:33:13, skipping insertion in model container [2020-12-23 01:33:14,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:33:13" (2/3) ... [2020-12-23 01:33:14,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da01818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:33:14, skipping insertion in model container [2020-12-23 01:33:14,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:33:13" (3/3) ... [2020-12-23 01:33:14,005 INFO L111 eAbstractionObserver]: Analyzing ICFG sina3.c [2020-12-23 01:33:14,015 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 01:33:14,022 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 01:33:14,048 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 01:33:14,086 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 01:33:14,086 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 01:33:14,086 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 01:33:14,086 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 01:33:14,087 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 01:33:14,087 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 01:33:14,087 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 01:33:14,087 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 01:33:14,110 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-12-23 01:33:14,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 01:33:14,118 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:33:14,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:33:14,120 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:33:14,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:33:14,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1389277550, now seen corresponding path program 1 times [2020-12-23 01:33:14,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:33:14,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492063075] [2020-12-23 01:33:14,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:33:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:33:14,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:33:14,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492063075] [2020-12-23 01:33:14,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:33:14,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 01:33:14,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648839960] [2020-12-23 01:33:14,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 01:33:14,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:33:14,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 01:33:14,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 01:33:14,402 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-12-23 01:33:14,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:33:14,429 INFO L93 Difference]: Finished difference Result 50 states and 72 transitions. [2020-12-23 01:33:14,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 01:33:14,431 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-23 01:33:14,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:33:14,443 INFO L225 Difference]: With dead ends: 50 [2020-12-23 01:33:14,444 INFO L226 Difference]: Without dead ends: 23 [2020-12-23 01:33:14,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 01:33:14,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-23 01:33:14,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-23 01:33:14,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 01:33:14,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-12-23 01:33:14,498 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2020-12-23 01:33:14,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:33:14,498 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-12-23 01:33:14,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 01:33:14,499 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-12-23 01:33:14,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 01:33:14,500 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:33:14,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:33:14,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 01:33:14,501 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:33:14,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:33:14,502 INFO L82 PathProgramCache]: Analyzing trace with hash 796930410, now seen corresponding path program 1 times [2020-12-23 01:33:14,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:33:14,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579795963] [2020-12-23 01:33:14,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:33:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:33:14,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:33:14,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579795963] [2020-12-23 01:33:14,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:33:14,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 01:33:14,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071178870] [2020-12-23 01:33:14,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 01:33:14,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:33:14,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 01:33:14,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 01:33:14,692 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 4 states. [2020-12-23 01:33:14,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:33:14,869 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2020-12-23 01:33:14,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 01:33:14,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-23 01:33:14,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:33:14,871 INFO L225 Difference]: With dead ends: 53 [2020-12-23 01:33:14,871 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 01:33:14,872 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 [2020-12-23 01:33:14,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 01:33:14,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2020-12-23 01:33:14,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-23 01:33:14,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-12-23 01:33:14,882 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 16 [2020-12-23 01:33:14,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:33:14,883 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-12-23 01:33:14,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 01:33:14,883 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-12-23 01:33:14,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 01:33:14,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:33:14,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:33:14,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 01:33:14,885 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:33:14,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:33:14,886 INFO L82 PathProgramCache]: Analyzing trace with hash 495241442, now seen corresponding path program 1 times [2020-12-23 01:33:14,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:33:14,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659506103] [2020-12-23 01:33:14,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:33:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:33:16,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:33:16,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659506103] [2020-12-23 01:33:16,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015098297] [2020-12-23 01:33:16,365 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 [2020-12-23 01:33:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:33:16,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 01:33:16,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:33:16,708 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:33:16,709 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 23 treesize of output 27 [2020-12-23 01:33:16,721 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:33:16,733 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:33:16,752 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-23 01:33:16,754 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:33:16,768 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:33:16,769 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:33:16,772 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:40, output treesize:29 [2020-12-23 01:33:16,830 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 01:33:16,834 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:33:16,849 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:33:16,852 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:33:16,859 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:40 [2020-12-23 01:33:17,065 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2020-12-23 01:33:17,068 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:33:17,092 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:33:17,094 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:33:17,095 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:40 [2020-12-23 01:33:17,245 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 33 [2020-12-23 01:33:17,248 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:33:17,262 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:33:17,263 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:33:17,264 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:61, output treesize:40 [2020-12-23 01:33:17,427 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 33 [2020-12-23 01:33:17,433 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:33:17,449 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:33:17,502 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-12-23 01:33:17,503 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:61, output treesize:56 [2020-12-23 01:33:17,813 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:33:17,826 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:33:17,829 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:33:17,838 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:33:17,841 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:33:17,844 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:33:17,854 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:33:17,857 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:33:17,872 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:33:17,875 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:33:17,878 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:33:17,885 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:33:17,888 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:33:17,907 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:33:17,909 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:33:17,916 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:33:17,919 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:33:17,922 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:33:17,930 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:33:17,933 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:33:17,958 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:33:17,961 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:33:17,964 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:33:17,970 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:33:17,973 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:33:17,980 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:33:18,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:33:18,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:33:18,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2020-12-23 01:33:18,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408973311] [2020-12-23 01:33:18,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-23 01:33:18,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:33:18,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-23 01:33:18,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2020-12-23 01:33:18,020 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 30 states. [2020-12-23 01:33:20,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:33:20,759 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2020-12-23 01:33:20,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-23 01:33:20,760 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 24 [2020-12-23 01:33:20,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:33:20,762 INFO L225 Difference]: With dead ends: 74 [2020-12-23 01:33:20,762 INFO L226 Difference]: Without dead ends: 72 [2020-12-23 01:33:20,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=441, Invalid=2211, Unknown=0, NotChecked=0, Total=2652 [2020-12-23 01:33:20,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-23 01:33:20,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 46. [2020-12-23 01:33:20,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 01:33:20,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2020-12-23 01:33:20,776 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 24 [2020-12-23 01:33:20,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:33:20,777 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2020-12-23 01:33:20,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-12-23 01:33:20,777 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2020-12-23 01:33:20,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 01:33:20,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:33:20,779 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:33:20,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 01:33:20,993 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:33:20,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:33:20,995 INFO L82 PathProgramCache]: Analyzing trace with hash 924425184, now seen corresponding path program 2 times [2020-12-23 01:33:20,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:33:20,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411165310] [2020-12-23 01:33:20,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:33:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:33:21,127 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 01:33:21,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411165310] [2020-12-23 01:33:21,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117853975] [2020-12-23 01:33:21,128 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 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 [2020-12-23 01:33:21,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:33:21,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:33:21,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 01:33:21,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:33:21,328 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 01:33:21,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:33:21,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-12-23 01:33:21,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155765626] [2020-12-23 01:33:21,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 01:33:21,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:33:21,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 01:33:21,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-23 01:33:21,337 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 12 states. [2020-12-23 01:33:21,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:33:21,744 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2020-12-23 01:33:21,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 01:33:21,745 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-12-23 01:33:21,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:33:21,746 INFO L225 Difference]: With dead ends: 99 [2020-12-23 01:33:21,746 INFO L226 Difference]: Without dead ends: 51 [2020-12-23 01:33:21,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-12-23 01:33:21,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-23 01:33:21,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 35. [2020-12-23 01:33:21,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 01:33:21,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-23 01:33:21,755 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 26 [2020-12-23 01:33:21,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:33:21,755 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-23 01:33:21,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 01:33:21,755 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-23 01:33:21,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 01:33:21,756 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:33:21,756 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] [2020-12-23 01:33:21,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:33:21,971 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:33:21,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:33:21,972 INFO L82 PathProgramCache]: Analyzing trace with hash -826292134, now seen corresponding path program 3 times [2020-12-23 01:33:21,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:33:21,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439801158] [2020-12-23 01:33:21,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:33:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:33:22,598 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-12-23 01:33:22,752 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-12-23 01:33:23,645 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-12-23 01:33:24,458 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:33:24,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439801158] [2020-12-23 01:33:24,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285362875] [2020-12-23 01:33:24,459 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 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 [2020-12-23 01:33:24,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 01:33:24,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:33:24,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 60 conjunts are in the unsatisfiable core [2020-12-23 01:33:24,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:33:24,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:33:24,642 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 [2020-12-23 01:33:24,644 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:33:24,662 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:33:24,671 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 [2020-12-23 01:33:24,672 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:33:24,687 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:33:24,688 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:33:24,689 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:45, output treesize:34 [2020-12-23 01:33:24,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:33:24,763 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 01:33:24,766 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:33:24,790 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:33:24,793 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:33:24,793 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:49, output treesize:45 [2020-12-23 01:33:24,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:33:24,958 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:33:24,959 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 56 [2020-12-23 01:33:24,962 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:33:25,018 INFO L625 ElimStorePlain]: treesize reduction 20, result has 72.2 percent of original size [2020-12-23 01:33:25,020 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:33:25,020 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:56, output treesize:52 [2020-12-23 01:33:25,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:33:25,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:33:25,517 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:33:25,518 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 54 [2020-12-23 01:33:25,521 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:33:25,577 INFO L625 ElimStorePlain]: treesize reduction 22, result has 73.5 percent of original size [2020-12-23 01:33:25,580 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. [2020-12-23 01:33:25,581 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:65, output treesize:61 [2020-12-23 01:33:25,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:33:25,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:33:25,728 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:33:25,729 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 92 [2020-12-23 01:33:25,740 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:33:25,812 INFO L625 ElimStorePlain]: treesize reduction 20, result has 78.3 percent of original size [2020-12-23 01:33:25,815 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. [2020-12-23 01:33:25,816 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:76, output treesize:72 [2020-12-23 01:33:30,117 WARN L197 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 50 [2020-12-23 01:33:34,186 WARN L197 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-12-23 01:33:34,810 WARN L197 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-12-23 01:33:34,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:33:34,835 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:33:34,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:33:34,855 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:33:34,855 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 93 [2020-12-23 01:33:34,859 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:33:34,949 INFO L625 ElimStorePlain]: treesize reduction 22, result has 79.2 percent of original size [2020-12-23 01:33:34,952 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. [2020-12-23 01:33:34,953 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:105, output treesize:84 [2020-12-23 01:33:35,565 WARN L197 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-12-23 01:33:36,463 WARN L197 SmtUtils]: Spent 807.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-12-23 01:33:36,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:33:36,490 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:33:36,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:33:36,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:33:36,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:33:36,500 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 61 [2020-12-23 01:33:36,504 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:33:36,551 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:33:36,555 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. [2020-12-23 01:33:36,556 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:108, output treesize:78 [2020-12-23 01:33:37,153 WARN L197 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-12-23 01:33:37,790 WARN L197 SmtUtils]: Spent 532.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-12-23 01:33:38,389 WARN L197 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-12-23 01:33:40,411 WARN L197 SmtUtils]: Spent 1.90 s on a formula simplification that was a NOOP. DAG size: 47 [2020-12-23 01:33:40,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:33:40,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:33:40,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:33:40,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:33:40,439 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 59 [2020-12-23 01:33:40,442 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:33:40,516 INFO L625 ElimStorePlain]: treesize reduction 4, result has 94.9 percent of original size [2020-12-23 01:33:40,519 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. [2020-12-23 01:33:40,519 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:94, output treesize:75 [2020-12-23 01:33:41,196 WARN L197 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-12-23 01:33:41,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:33:41,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:33:41,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:33:41,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:33:41,642 WARN L197 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-12-23 01:33:41,643 INFO L348 Elim1Store]: treesize reduction 14, result has 95.2 percent of original size [2020-12-23 01:33:41,644 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 73 treesize of output 313 [2020-12-23 01:33:41,655 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:33:41,771 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2020-12-23 01:33:41,773 INFO L625 ElimStorePlain]: treesize reduction 112, result has 45.4 percent of original size [2020-12-23 01:33:41,781 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. [2020-12-23 01:33:41,781 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:97, output treesize:93 [2020-12-23 01:33:41,935 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:33:41,940 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:33:46,224 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,821 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 7, 1] term [2020-12-23 01:33:56,822 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,832 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:33:56,836 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:33:56,837 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:33:56,840 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,841 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,843 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:33:56,846 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,856 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:33:56,866 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,867 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,871 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:33:56,872 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:33:56,875 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,876 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,878 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:33:56,882 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,883 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:33:56,890 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:33:56,913 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:33:56,915 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,918 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,919 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:33:56,921 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,922 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:33:56,929 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,946 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,948 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,949 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,951 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:33:56,953 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,954 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,956 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:33:56,969 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,970 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,973 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,974 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,976 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,977 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,978 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:33:56,980 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,981 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:33:56,988 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,989 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,991 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,991 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,993 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:33:56,995 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,996 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:33:56,998 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:33:57,008 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:33:57,103 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:33:57,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:33:57,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 28] total 50 [2020-12-23 01:33:57,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374711030] [2020-12-23 01:33:57,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-12-23 01:33:57,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:33:57,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-12-23 01:33:57,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2196, Unknown=12, NotChecked=0, Total=2450 [2020-12-23 01:33:57,107 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 50 states. [2020-12-23 01:33:57,753 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38 [2020-12-23 01:33:57,941 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-12-23 01:33:58,151 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2020-12-23 01:33:58,336 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-23 01:33:58,551 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-12-23 01:34:00,048 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2020-12-23 01:34:01,048 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 47 [2020-12-23 01:34:01,360 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 49 [2020-12-23 01:34:01,667 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2020-12-23 01:34:01,995 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 55 [2020-12-23 01:34:04,074 WARN L197 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2020-12-23 01:34:05,855 WARN L197 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 75 DAG size of output: 51 [2020-12-23 01:34:06,102 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 57 [2020-12-23 01:34:07,609 WARN L197 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-12-23 01:34:09,109 WARN L197 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-12-23 01:34:11,114 WARN L197 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-12-23 01:34:23,437 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 63 [2020-12-23 01:35:14,520 WARN L197 SmtUtils]: Spent 42.91 s on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-12-23 01:35:22,851 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2020-12-23 01:35:33,250 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2020-12-23 01:36:12,236 WARN L197 SmtUtils]: Spent 26.49 s on a formula simplification. DAG size of input: 117 DAG size of output: 97 [2020-12-23 01:37:37,089 WARN L197 SmtUtils]: Spent 1.24 m on a formula simplification. DAG size of input: 131 DAG size of output: 105