/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/loops/linear_sea.ch.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:44:43,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:44:43,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:44:43,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:44:43,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:44:43,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:44:43,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:44:43,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:44:43,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:44:43,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:44:43,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:44:43,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:44:43,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:44:43,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:44:43,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:44:43,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:44:43,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:44:43,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:44:43,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:44:43,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:44:43,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:44:43,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:44:43,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:44:43,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:44:43,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 06:44:43,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 06:44:43,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 06:44:43,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 06:44:43,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 06:44:43,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 06:44:43,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 06:44:43,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 06:44:43,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 06:44:43,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:44:43,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:44:43,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:44:43,437 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 06:44:43,489 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:44:43,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:44:43,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:44:43,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:44:43,493 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:44:43,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:44:43,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:44:43,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:44:43,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:44:43,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:44:43,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:44:43,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:44:43,496 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:44:43,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:44:43,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:44:43,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:44:43,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:44:43,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:44:43,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:44:43,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:44:43,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:44:43,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:44:43,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:44:43,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:44:43,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:44:43,499 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:44:43,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:44:43,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:44:43,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:44:43,963 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:44:43,964 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:44:43,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/linear_sea.ch.c [2020-12-23 06:44:44,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d5292c710/8041814948584728b26c8a7b3df1844c/FLAGfbd491d06 [2020-12-23 06:44:44,758 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:44:44,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loops/linear_sea.ch.c [2020-12-23 06:44:44,765 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d5292c710/8041814948584728b26c8a7b3df1844c/FLAGfbd491d06 [2020-12-23 06:44:45,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d5292c710/8041814948584728b26c8a7b3df1844c [2020-12-23 06:44:45,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:44:45,111 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:44:45,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:44:45,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:44:45,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:44:45,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:44:45" (1/1) ... [2020-12-23 06:44:45,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@df7bf61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:44:45, skipping insertion in model container [2020-12-23 06:44:45,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:44:45" (1/1) ... [2020-12-23 06:44:45,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:44:45,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 06:44:45,295 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/loops/linear_sea.ch.c[358,371] left hand side expression in assignment: lhs: VariableLHS[~SIZE~0,GLOBAL] 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[4],BinaryExpression[ARITHMOD,IfThenElseExpression[BinaryExpression[LOGICAND,BinaryExpression[COMPLT,BinaryExpression[ARITHMOD,IdentifierExpression[~SIZE~0,GLOBAL],IntegerLiteral[4294967296]],IntegerLiteral[0]],BinaryExpression[COMPNEQ,IntegerLiteral[0],BinaryExpression[ARITHMOD,BinaryExpression[ARITHMOD,IdentifierExpression[~SIZE~0,GLOBAL],IntegerLiteral[4294967296]],IntegerLiteral[2]]]],BinaryExpression[ARITHPLUS,IntegerLiteral[1],BinaryExpression[ARITHDIV,BinaryExpression[ARITHMOD,IdentifierExpression[~SIZE~0,GLOBAL],IntegerLiteral[4294967296]],IntegerLiteral[2]]],BinaryExpression[ARITHDIV,BinaryExpression[ARITHMOD,IdentifierExpression[~SIZE~0,GLOBAL],IntegerLiteral[4294967296]],IntegerLiteral[2]]],IntegerLiteral[4294967296]]]]]] [2020-12-23 06:44:45,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:44:45,327 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 06:44:45,340 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/loops/linear_sea.ch.c[358,371] left hand side expression in assignment: lhs: VariableLHS[~SIZE~0,GLOBAL] 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[4],BinaryExpression[ARITHMOD,IfThenElseExpression[BinaryExpression[LOGICAND,BinaryExpression[COMPLT,BinaryExpression[ARITHMOD,IdentifierExpression[~SIZE~0,GLOBAL],IntegerLiteral[4294967296]],IntegerLiteral[0]],BinaryExpression[COMPNEQ,IntegerLiteral[0],BinaryExpression[ARITHMOD,BinaryExpression[ARITHMOD,IdentifierExpression[~SIZE~0,GLOBAL],IntegerLiteral[4294967296]],IntegerLiteral[2]]]],BinaryExpression[ARITHPLUS,IntegerLiteral[1],BinaryExpression[ARITHDIV,BinaryExpression[ARITHMOD,IdentifierExpression[~SIZE~0,GLOBAL],IntegerLiteral[4294967296]],IntegerLiteral[2]]],BinaryExpression[ARITHDIV,BinaryExpression[ARITHMOD,IdentifierExpression[~SIZE~0,GLOBAL],IntegerLiteral[4294967296]],IntegerLiteral[2]]],IntegerLiteral[4294967296]]]]]] [2020-12-23 06:44:45,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:44:45,364 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:44:45,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:44:45 WrapperNode [2020-12-23 06:44:45,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:44:45,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:44:45,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:44:45,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:44:45,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:44:45" (1/1) ... [2020-12-23 06:44:45,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:44:45" (1/1) ... [2020-12-23 06:44:45,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:44:45,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:44:45,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:44:45,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:44:45,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:44:45" (1/1) ... [2020-12-23 06:44:45,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:44:45" (1/1) ... [2020-12-23 06:44:45,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:44:45" (1/1) ... [2020-12-23 06:44:45,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:44:45" (1/1) ... [2020-12-23 06:44:45,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:44:45" (1/1) ... [2020-12-23 06:44:45,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:44:45" (1/1) ... [2020-12-23 06:44:45,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:44:45" (1/1) ... [2020-12-23 06:44:45,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:44:45,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:44:45,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:44:45,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:44:45,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:44:45" (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 06:44:45,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:44:45,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:44:45,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 06:44:45,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 06:44:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:44:45,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:44:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 06:44:45,889 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:44:45,890 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-23 06:44:45,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:44:45 BoogieIcfgContainer [2020-12-23 06:44:45,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:44:45,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:44:45,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:44:45,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:44:45,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:44:45" (1/3) ... [2020-12-23 06:44:45,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3edc84a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:44:45, skipping insertion in model container [2020-12-23 06:44:45,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:44:45" (2/3) ... [2020-12-23 06:44:45,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3edc84a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:44:45, skipping insertion in model container [2020-12-23 06:44:45,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:44:45" (3/3) ... [2020-12-23 06:44:45,920 INFO L111 eAbstractionObserver]: Analyzing ICFG linear_sea.ch.c [2020-12-23 06:44:45,937 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:44:45,950 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 06:44:45,996 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 06:44:46,062 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:44:46,062 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:44:46,062 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:44:46,063 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:44:46,063 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:44:46,063 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:44:46,063 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:44:46,063 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:44:46,086 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-12-23 06:44:46,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 06:44:46,093 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:44:46,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:44:46,094 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:44:46,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:44:46,106 INFO L82 PathProgramCache]: Analyzing trace with hash 132774875, now seen corresponding path program 1 times [2020-12-23 06:44:46,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:44:46,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808511495] [2020-12-23 06:44:46,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:44:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:44:46,417 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 06:44:46,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808511495] [2020-12-23 06:44:46,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:44:46,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 06:44:46,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893066457] [2020-12-23 06:44:46,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 06:44:46,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:44:46,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 06:44:46,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:44:46,457 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-12-23 06:44:46,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:44:46,478 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2020-12-23 06:44:46,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 06:44:46,479 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-23 06:44:46,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:44:46,501 INFO L225 Difference]: With dead ends: 24 [2020-12-23 06:44:46,501 INFO L226 Difference]: Without dead ends: 11 [2020-12-23 06:44:46,509 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 06:44:46,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-23 06:44:46,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-23 06:44:46,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-23 06:44:46,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-12-23 06:44:46,549 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2020-12-23 06:44:46,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:44:46,549 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-12-23 06:44:46,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 06:44:46,550 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-12-23 06:44:46,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 06:44:46,552 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:44:46,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:44:46,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:44:46,554 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:44:46,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:44:46,558 INFO L82 PathProgramCache]: Analyzing trace with hash -317112588, now seen corresponding path program 1 times [2020-12-23 06:44:46,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:44:46,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353899681] [2020-12-23 06:44:46,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:44:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:44:46,686 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 06:44:46,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353899681] [2020-12-23 06:44:46,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:44:46,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:44:46,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062512815] [2020-12-23 06:44:46,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:44:46,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:44:46,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:44:46,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:44:46,691 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 4 states. [2020-12-23 06:44:46,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:44:46,722 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2020-12-23 06:44:46,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:44:46,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-23 06:44:46,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:44:46,723 INFO L225 Difference]: With dead ends: 15 [2020-12-23 06:44:46,724 INFO L226 Difference]: Without dead ends: 11 [2020-12-23 06:44:46,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:44:46,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-23 06:44:46,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-23 06:44:46,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-23 06:44:46,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-12-23 06:44:46,733 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 10 [2020-12-23 06:44:46,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:44:46,734 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-12-23 06:44:46,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:44:46,735 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-12-23 06:44:46,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 06:44:46,736 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:44:46,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:44:46,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 06:44:46,736 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:44:46,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:44:46,739 INFO L82 PathProgramCache]: Analyzing trace with hash -317053006, now seen corresponding path program 1 times [2020-12-23 06:44:46,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:44:46,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292064337] [2020-12-23 06:44:46,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:44:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:44:46,983 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 06:44:46,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292064337] [2020-12-23 06:44:46,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:44:46,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 06:44:46,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184986587] [2020-12-23 06:44:46,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 06:44:46,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:44:46,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 06:44:46,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 06:44:46,987 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 3 states. [2020-12-23 06:44:47,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:44:47,012 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-12-23 06:44:47,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 06:44:47,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-23 06:44:47,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:44:47,013 INFO L225 Difference]: With dead ends: 19 [2020-12-23 06:44:47,014 INFO L226 Difference]: Without dead ends: 14 [2020-12-23 06:44:47,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 06:44:47,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-23 06:44:47,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-12-23 06:44:47,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-23 06:44:47,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-12-23 06:44:47,019 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2020-12-23 06:44:47,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:44:47,019 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-12-23 06:44:47,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 06:44:47,019 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-12-23 06:44:47,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 06:44:47,020 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:44:47,020 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:44:47,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 06:44:47,021 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:44:47,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:44:47,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1714420412, now seen corresponding path program 1 times [2020-12-23 06:44:47,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:44:47,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269535043] [2020-12-23 06:44:47,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:44:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:44:47,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:44:47,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269535043] [2020-12-23 06:44:47,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719505274] [2020-12-23 06:44:47,301 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 06:44:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:44:47,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 06:44:47,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:44:47,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 06:44:47,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:44:47,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2020-12-23 06:44:47,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935450123] [2020-12-23 06:44:47,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 06:44:47,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:44:47,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 06:44:47,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-23 06:44:47,536 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 10 states. [2020-12-23 06:44:47,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:44:47,967 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2020-12-23 06:44:47,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 06:44:47,968 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-12-23 06:44:47,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:44:47,969 INFO L225 Difference]: With dead ends: 29 [2020-12-23 06:44:47,969 INFO L226 Difference]: Without dead ends: 18 [2020-12-23 06:44:47,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-12-23 06:44:47,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-23 06:44:47,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-12-23 06:44:47,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-23 06:44:47,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-12-23 06:44:47,975 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2020-12-23 06:44:47,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:44:47,975 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-12-23 06:44:47,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 06:44:47,976 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-12-23 06:44:47,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 06:44:47,976 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:44:47,977 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:44:48,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:44:48,190 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:44:48,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:44:48,192 INFO L82 PathProgramCache]: Analyzing trace with hash 488445872, now seen corresponding path program 1 times [2020-12-23 06:44:48,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:44:48,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404736251] [2020-12-23 06:44:48,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:44:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:44:48,595 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 47 [2020-12-23 06:44:49,068 WARN L197 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 84 [2020-12-23 06:44:49,518 WARN L197 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 83 [2020-12-23 06:44:49,898 WARN L197 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 66 [2020-12-23 06:44:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:44:50,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404736251] [2020-12-23 06:44:50,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989237903] [2020-12-23 06:44:50,217 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 [2020-12-23 06:44:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:44:50,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-23 06:44:50,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:44:50,395 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 21 treesize of output 17 [2020-12-23 06:44:50,396 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 06:44:50,408 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:44:50,411 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 06:44:50,412 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:29 [2020-12-23 06:44:50,740 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 06:44:50,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:44:50,790 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:44:50,791 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 2 case distinctions, treesize of input 39 treesize of output 53 [2020-12-23 06:44:50,800 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:44:50,802 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 06:44:50,834 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:44:50,834 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 40 treesize of output 68 [2020-12-23 06:44:50,848 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 06:44:50,850 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:44:50,853 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 06:44:50,855 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:44:50,857 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 06:44:50,933 INFO L625 ElimStorePlain]: treesize reduction 1, result has 98.5 percent of original size [2020-12-23 06:44:50,935 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-12-23 06:44:50,936 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:103, output treesize:65 [2020-12-23 06:44:51,147 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 06:44:51,473 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:44:51,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:44:51,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-12-23 06:44:51,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855484954] [2020-12-23 06:44:51,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 06:44:51,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:44:51,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 06:44:51,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-12-23 06:44:51,480 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2020-12-23 06:44:51,804 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-12-23 06:44:52,091 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 58 [2020-12-23 06:44:52,391 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 59 [2020-12-23 06:44:52,808 WARN L197 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 67 [2020-12-23 06:44:53,174 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 46 [2020-12-23 06:44:53,401 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-12-23 06:44:53,666 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 44 [2020-12-23 06:44:54,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:44:54,098 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-12-23 06:44:54,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 06:44:54,099 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 16 [2020-12-23 06:44:54,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:44:54,101 INFO L225 Difference]: With dead ends: 32 [2020-12-23 06:44:54,101 INFO L226 Difference]: Without dead ends: 26 [2020-12-23 06:44:54,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2020-12-23 06:44:54,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-23 06:44:54,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-12-23 06:44:54,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 06:44:54,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-12-23 06:44:54,130 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 16 [2020-12-23 06:44:54,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:44:54,130 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-12-23 06:44:54,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-23 06:44:54,130 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-12-23 06:44:54,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 06:44:54,131 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:44:54,131 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:44:54,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:44:54,338 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:44:54,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:44:54,338 INFO L82 PathProgramCache]: Analyzing trace with hash 570181232, now seen corresponding path program 2 times [2020-12-23 06:44:54,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:44:54,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131490365] [2020-12-23 06:44:54,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:44:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:44:55,161 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 44 [2020-12-23 06:44:55,404 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 48 [2020-12-23 06:44:56,139 WARN L197 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 71 [2020-12-23 06:44:57,143 WARN L197 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 82 [2020-12-23 06:44:57,900 WARN L197 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 77 [2020-12-23 06:44:58,597 WARN L197 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 65 [2020-12-23 06:44:59,448 WARN L197 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 96 [2020-12-23 06:45:00,208 WARN L197 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 55 [2020-12-23 06:45:00,736 WARN L197 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 35 [2020-12-23 06:45:01,085 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 54 [2020-12-23 06:45:01,197 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:45:01,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131490365] [2020-12-23 06:45:01,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010092429] [2020-12-23 06:45:01,198 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 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 06:45:01,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 06:45:01,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:45:01,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-23 06:45:01,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:45:01,364 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 21 treesize of output 17 [2020-12-23 06:45:01,365 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 06:45:01,377 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:45:01,378 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 06:45:01,378 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:29 [2020-12-23 06:45:01,966 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 06:45:01,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:45:02,020 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:45:02,021 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 2 case distinctions, treesize of input 41 treesize of output 55 [2020-12-23 06:45:02,026 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:45:02,030 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 06:45:02,093 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:45:02,094 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 42 treesize of output 72 [2020-12-23 06:45:02,100 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 06:45:02,101 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:45:02,105 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 06:45:02,106 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:45:02,108 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 06:45:02,224 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 26 [2020-12-23 06:45:02,227 INFO L625 ElimStorePlain]: treesize reduction 1, result has 98.6 percent of original size [2020-12-23 06:45:02,228 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-12-23 06:45:02,229 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:113, output treesize:71 [2020-12-23 06:45:02,654 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 06:45:02,911 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 06:45:02,982 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:45:02,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:45:02,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 24 [2020-12-23 06:45:02,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340698156] [2020-12-23 06:45:02,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-23 06:45:02,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:45:02,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-23 06:45:02,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=500, Unknown=0, NotChecked=0, Total=552 [2020-12-23 06:45:02,985 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 24 states. [2020-12-23 06:45:03,255 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2020-12-23 06:45:03,574 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 50 [2020-12-23 06:45:03,857 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 51 [2020-12-23 06:45:04,237 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 61 [2020-12-23 06:45:04,646 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 48 [2020-12-23 06:45:05,062 WARN L197 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 49 [2020-12-23 06:45:05,722 WARN L197 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 58 [2020-12-23 06:45:06,090 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 40 [2020-12-23 06:45:06,505 WARN L197 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 52 [2020-12-23 06:45:06,895 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 37 [2020-12-23 06:45:07,116 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 38 [2020-12-23 06:45:07,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:45:07,276 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-12-23 06:45:07,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 06:45:07,277 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 22 [2020-12-23 06:45:07,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:45:07,278 INFO L225 Difference]: With dead ends: 39 [2020-12-23 06:45:07,278 INFO L226 Difference]: Without dead ends: 27 [2020-12-23 06:45:07,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=146, Invalid=1044, Unknown=0, NotChecked=0, Total=1190 [2020-12-23 06:45:07,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-23 06:45:07,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-12-23 06:45:07,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-23 06:45:07,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-12-23 06:45:07,285 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 22 [2020-12-23 06:45:07,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:45:07,285 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-12-23 06:45:07,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-23 06:45:07,286 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-12-23 06:45:07,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 06:45:07,286 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:45:07,287 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:45:07,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:45:07,490 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:45:07,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:45:07,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1970775806, now seen corresponding path program 3 times [2020-12-23 06:45:07,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:45:07,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506547014] [2020-12-23 06:45:07,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:45:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:45:08,161 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 48 [2020-12-23 06:45:08,376 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 63 [2020-12-23 06:45:09,047 WARN L197 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 86 [2020-12-23 06:45:09,574 WARN L197 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 88 [2020-12-23 06:45:10,218 WARN L197 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 92 [2020-12-23 06:45:10,795 WARN L197 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 82 [2020-12-23 06:45:11,557 WARN L197 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 84 [2020-12-23 06:45:12,385 WARN L197 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 103 [2020-12-23 06:45:13,289 WARN L197 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 92 [2020-12-23 06:45:14,004 WARN L197 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 84 [2020-12-23 06:45:14,419 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 33 [2020-12-23 06:45:14,517 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:45:14,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506547014] [2020-12-23 06:45:14,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372471921] [2020-12-23 06:45:14,518 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 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 [2020-12-23 06:45:15,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-12-23 06:45:15,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:45:15,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 51 conjunts are in the unsatisfiable core [2020-12-23 06:45:15,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:45:15,230 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2020-12-23 06:45:15,231 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 06:45:15,238 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2020-12-23 06:45:15,239 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 06:45:15,336 INFO L625 ElimStorePlain]: treesize reduction 5, result has 93.8 percent of original size [2020-12-23 06:45:15,337 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-12-23 06:45:15,338 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:89, output treesize:76 [2020-12-23 06:45:16,655 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-12-23 06:45:17,076 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-12-23 06:45:17,915 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-12-23 06:45:17,927 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 2, 5, 1] term [2020-12-23 06:45:17,928 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 06:45:17,930 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 06:45:17,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:45:17,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:45:17,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:45:17,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:45:17,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:45:17,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:45:17,986 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 15 [2020-12-23 06:45:17,991 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 06:45:18,135 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-12-23 06:45:18,135 INFO L348 Elim1Store]: treesize reduction 68, result has 53.1 percent of original size [2020-12-23 06:45:18,136 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 92 [2020-12-23 06:45:18,138 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:45:18,141 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:45:18,143 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:45:18,145 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 06:45:18,455 WARN L197 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-12-23 06:45:18,455 INFO L625 ElimStorePlain]: treesize reduction 89, result has 68.2 percent of original size [2020-12-23 06:45:18,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:45:18,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:45:18,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:45:18,559 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:45:18,559 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 92 [2020-12-23 06:45:18,564 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:45:18,569 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:45:18,571 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:45:18,573 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 06:45:18,713 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-12-23 06:45:18,713 INFO L348 Elim1Store]: treesize reduction 68, result has 53.1 percent of original size [2020-12-23 06:45:18,714 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 91 [2020-12-23 06:45:18,718 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:45:18,722 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:45:18,724 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-23 06:45:18,997 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2020-12-23 06:45:18,998 INFO L625 ElimStorePlain]: treesize reduction 1, result has 99.4 percent of original size [2020-12-23 06:45:19,000 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-12-23 06:45:19,000 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:353, output treesize:153 [2020-12-23 06:45:19,343 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-12-23 06:45:19,686 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 7, 1] term [2020-12-23 06:45:19,686 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:45:20,331 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 32 [2020-12-23 06:45:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:45:20,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:45:20,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2020-12-23 06:45:20,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547155151] [2020-12-23 06:45:20,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-23 06:45:20,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:45:20,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-23 06:45:20,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2020-12-23 06:45:20,347 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 28 states. [2020-12-23 06:45:20,826 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 40 [2020-12-23 06:45:21,209 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 41 [2020-12-23 06:45:21,500 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 42 [2020-12-23 06:45:22,031 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 41 [2020-12-23 06:45:22,760 WARN L197 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 73 [2020-12-23 06:45:23,240 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 47 [2020-12-23 06:45:24,056 WARN L197 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 56 [2020-12-23 06:45:24,760 WARN L197 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 59 [2020-12-23 06:45:26,393 WARN L197 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 205 DAG size of output: 77 [2020-12-23 06:45:28,337 WARN L197 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 205 DAG size of output: 78 [2020-12-23 06:45:31,195 WARN L197 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 220 DAG size of output: 86 [2020-12-23 06:45:34,597 WARN L197 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 200 DAG size of output: 64 [2020-12-23 06:45:36,760 WARN L197 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 201 DAG size of output: 65 [2020-12-23 06:45:39,255 WARN L197 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 166 DAG size of output: 61 [2020-12-23 06:45:42,045 WARN L197 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 166 DAG size of output: 62 [2020-12-23 06:45:43,049 WARN L197 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 46 [2020-12-23 06:45:43,776 WARN L197 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 47 [2020-12-23 06:45:44,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:45:44,640 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2020-12-23 06:45:44,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-23 06:45:44,642 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 25 [2020-12-23 06:45:44,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:45:44,643 INFO L225 Difference]: With dead ends: 48 [2020-12-23 06:45:44,643 INFO L226 Difference]: Without dead ends: 39 [2020-12-23 06:45:44,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 32.7s TimeCoverageRelationStatistics Valid=289, Invalid=1967, Unknown=0, NotChecked=0, Total=2256 [2020-12-23 06:45:44,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-23 06:45:44,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-12-23 06:45:44,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-23 06:45:44,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-12-23 06:45:44,652 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 25 [2020-12-23 06:45:44,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:45:44,653 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-12-23 06:45:44,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-23 06:45:44,653 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-12-23 06:45:44,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 06:45:44,654 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:45:44,654 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:45:44,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:45:44,861 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:45:44,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:45:44,862 INFO L82 PathProgramCache]: Analyzing trace with hash 511130498, now seen corresponding path program 4 times [2020-12-23 06:45:44,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:45:44,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992849316] [2020-12-23 06:45:44,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:45:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:45:45,488 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 58 [2020-12-23 06:45:45,747 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 70 [2020-12-23 06:45:46,189 WARN L197 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 74 [2020-12-23 06:45:46,603 WARN L197 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 75 [2020-12-23 06:45:47,003 WARN L197 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 74 [2020-12-23 06:45:47,514 WARN L197 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 86 [2020-12-23 06:45:48,273 WARN L197 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 78 [2020-12-23 06:45:48,683 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 67 [2020-12-23 06:45:49,146 WARN L197 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2020-12-23 06:45:49,607 WARN L197 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2020-12-23 06:45:50,083 WARN L197 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 67 [2020-12-23 06:45:50,704 WARN L197 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 68 [2020-12-23 06:45:51,585 WARN L197 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 61 [2020-12-23 06:45:51,847 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 33 [2020-12-23 06:45:52,144 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:45:52,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992849316] [2020-12-23 06:45:52,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593035450] [2020-12-23 06:45:52,145 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 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 [2020-12-23 06:45:52,512 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 06:45:52,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:45:52,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 45 conjunts are in the unsatisfiable core [2020-12-23 06:45:52,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:45:52,537 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 21 treesize of output 17 [2020-12-23 06:45:52,538 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 06:45:52,548 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 21 treesize of output 17 [2020-12-23 06:45:52,549 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 06:45:52,659 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 33 [2020-12-23 06:45:52,664 INFO L625 ElimStorePlain]: treesize reduction 5, result has 93.8 percent of original size [2020-12-23 06:45:52,668 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-12-23 06:45:52,668 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:89, output treesize:76 [2020-12-23 06:45:53,711 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-12-23 06:45:53,711 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:45:53,712 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:45:53,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 06:45:53,734 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 31 treesize of output 7 [2020-12-23 06:45:53,737 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 06:45:53,751 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:45:53,752 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 32 treesize of output 32 [2020-12-23 06:45:53,758 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:45:53,761 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 06:45:53,956 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2020-12-23 06:45:53,957 INFO L625 ElimStorePlain]: treesize reduction 35, result has 77.3 percent of original size [2020-12-23 06:45:53,981 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:45:53,982 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 32 treesize of output 32 [2020-12-23 06:45:53,984 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:45:53,986 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 06:45:54,002 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:45:54,003 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 31 treesize of output 31 [2020-12-23 06:45:54,005 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-23 06:45:54,145 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2020-12-23 06:45:54,146 INFO L625 ElimStorePlain]: treesize reduction 1, result has 98.6 percent of original size [2020-12-23 06:45:54,147 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-12-23 06:45:54,148 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:199, output treesize:73 [2020-12-23 06:45:55,383 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2020-12-23 06:45:55,384 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:45:55,809 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2020-12-23 06:45:56,229 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:45:56,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:45:56,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 33 [2020-12-23 06:45:56,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980135145] [2020-12-23 06:45:56,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-23 06:45:56,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:45:56,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-23 06:45:56,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=968, Unknown=0, NotChecked=0, Total=1056 [2020-12-23 06:45:56,232 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 33 states. [2020-12-23 06:45:56,660 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 39 [2020-12-23 06:45:57,156 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 49 [2020-12-23 06:45:57,616 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 39 [2020-12-23 06:45:58,057 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 39 [2020-12-23 06:45:58,581 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 51 [2020-12-23 06:45:59,337 WARN L197 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 61 [2020-12-23 06:45:59,863 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 49 [2020-12-23 06:46:00,539 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 49 [2020-12-23 06:46:01,255 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 37 [2020-12-23 06:46:01,973 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 37 [2020-12-23 06:46:02,539 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 45 [2020-12-23 06:46:03,190 WARN L197 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 55 [2020-12-23 06:46:04,184 WARN L197 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 69 [2020-12-23 06:46:05,208 WARN L197 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2020-12-23 06:46:05,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:46:05,318 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-12-23 06:46:05,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-23 06:46:05,319 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 37 [2020-12-23 06:46:05,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:46:05,322 INFO L225 Difference]: With dead ends: 53 [2020-12-23 06:46:05,322 INFO L226 Difference]: Without dead ends: 47 [2020-12-23 06:46:05,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=221, Invalid=2131, Unknown=0, NotChecked=0, Total=2352 [2020-12-23 06:46:05,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-23 06:46:05,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2020-12-23 06:46:05,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-23 06:46:05,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-12-23 06:46:05,333 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 37 [2020-12-23 06:46:05,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:46:05,333 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-12-23 06:46:05,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-12-23 06:46:05,333 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-12-23 06:46:05,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 06:46:05,334 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:46:05,334 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:46:05,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:46:05,538 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:46:05,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:46:05,539 INFO L82 PathProgramCache]: Analyzing trace with hash -214601040, now seen corresponding path program 5 times [2020-12-23 06:46:05,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:46:05,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3965050] [2020-12-23 06:46:05,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:46:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:46:06,393 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2020-12-23 06:46:06,796 WARN L197 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 73 [2020-12-23 06:46:07,103 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 61 [2020-12-23 06:46:07,427 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2020-12-23 06:46:07,708 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 58 [2020-12-23 06:46:07,983 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2020-12-23 06:46:08,266 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2020-12-23 06:46:08,805 WARN L197 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2020-12-23 06:46:09,491 WARN L197 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 85 [2020-12-23 06:46:10,159 WARN L197 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 74 [2020-12-23 06:46:11,312 WARN L197 SmtUtils]: Spent 826.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 77 [2020-12-23 06:46:12,648 WARN L197 SmtUtils]: Spent 958.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 78 [2020-12-23 06:46:13,848 WARN L197 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 78 [2020-12-23 06:46:14,863 WARN L197 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 81 [2020-12-23 06:46:16,240 WARN L197 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 78 [2020-12-23 06:46:17,069 WARN L197 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 55 [2020-12-23 06:46:17,732 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 48 [2020-12-23 06:46:18,291 WARN L197 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 40 [2020-12-23 06:46:18,735 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 34 [2020-12-23 06:46:18,968 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 10 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:46:18,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3965050] [2020-12-23 06:46:18,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252177668] [2020-12-23 06:46:18,968 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 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 [2020-12-23 06:46:19,664 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-12-23 06:46:19,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:46:19,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 51 conjunts are in the unsatisfiable core [2020-12-23 06:46:19,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:46:19,854 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 06:46:19,890 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 06:46:19,892 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 06:46:20,189 WARN L197 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-12-23 06:46:20,190 INFO L625 ElimStorePlain]: treesize reduction 31, result has 65.9 percent of original size [2020-12-23 06:46:20,202 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 21 treesize of output 17 [2020-12-23 06:46:20,204 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 06:46:20,270 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:46:20,271 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 06:46:20,271 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:161, output treesize:56 [2020-12-23 06:46:20,639 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-12-23 06:46:21,457 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-12-23 06:46:22,833 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:46:22,899 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:46:22,900 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 32 treesize of output 32 [2020-12-23 06:46:22,903 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:46:22,913 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 06:46:22,937 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 06:46:22,938 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 31 treesize of output 31 [2020-12-23 06:46:22,942 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 06:46:23,354 WARN L197 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2020-12-23 06:46:23,354 INFO L625 ElimStorePlain]: treesize reduction 1, result has 98.9 percent of original size [2020-12-23 06:46:23,356 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-12-23 06:46:23,356 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:137, output treesize:91 [2020-12-23 06:46:23,965 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-12-23 06:46:24,491 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-12-23 06:46:26,794 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-12-23 06:46:27,534 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-12-23 06:46:28,249 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-12-23 06:46:28,308 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 06:46:28,400 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 17 disjuncts