/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-multidimensional/add-3-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 10:45:56,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 10:45:56,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 10:45:56,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 10:45:56,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 10:45:56,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 10:45:56,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 10:45:56,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 10:45:56,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 10:45:56,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 10:45:56,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 10:45:56,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 10:45:56,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 10:45:56,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 10:45:56,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 10:45:56,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 10:45:56,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 10:45:56,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 10:45:56,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 10:45:56,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 10:45:56,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 10:45:56,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 10:45:56,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 10:45:56,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 10:45:56,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 10:45:56,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 10:45:56,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 10:45:56,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 10:45:56,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 10:45:56,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 10:45:56,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 10:45:56,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 10:45:56,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 10:45:57,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 10:45:57,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 10:45:57,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 10:45:57,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 10:45:57,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 10:45:57,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 10:45:57,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 10:45:57,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 10:45:57,015 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 10:45:57,069 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 10:45:57,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 10:45:57,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 10:45:57,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 10:45:57,074 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 10:45:57,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 10:45:57,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 10:45:57,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 10:45:57,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 10:45:57,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 10:45:57,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 10:45:57,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 10:45:57,077 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 10:45:57,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 10:45:57,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 10:45:57,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 10:45:57,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 10:45:57,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 10:45:57,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 10:45:57,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 10:45:57,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 10:45:57,079 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 10:45:57,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 10:45:57,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 10:45:57,079 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 10:45:57,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 10:45:57,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 10:45:57,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 10:45:57,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 10:45:57,588 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 10:45:57,589 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 10:45:57,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-multidimensional/add-3-n-u.c [2021-01-06 10:45:57,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/809980435/287a0100cddf4095ab4183428818b691/FLAG429713b6f [2021-01-06 10:45:58,392 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 10:45:58,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-multidimensional/add-3-n-u.c [2021-01-06 10:45:58,407 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/809980435/287a0100cddf4095ab4183428818b691/FLAG429713b6f [2021-01-06 10:45:58,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/809980435/287a0100cddf4095ab4183428818b691 [2021-01-06 10:45:58,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 10:45:58,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 10:45:58,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 10:45:58,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 10:45:58,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 10:45:58,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 10:45:58" (1/1) ... [2021-01-06 10:45:58,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cbfa06e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:45:58, skipping insertion in model container [2021-01-06 10:45:58,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 10:45:58" (1/1) ... [2021-01-06 10:45:58,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 10:45:58,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 10:45:59,008 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-multidimensional/add-3-n-u.c[321,334] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[ArrayLHS[VariableLHS[~A~0,],[IdentifierExpression[~i~0,]]],[IdentifierExpression[~j~0,]]],[IdentifierExpression[~k~0,]]] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[ArrayLHS[VariableLHS[~B~0,],[IdentifierExpression[~i~0,]]],[IdentifierExpression[~j~0,]]],[IdentifierExpression[~k~0,]]] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[ArrayLHS[VariableLHS[~C~0,],[IdentifierExpression[~i~0,]]],[IdentifierExpression[~j~0,]]],[IdentifierExpression[~k~0,]]] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-06 10:45:59,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 10:45:59,061 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 10:45:59,077 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-multidimensional/add-3-n-u.c[321,334] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#A~0,],base],BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#A~0,],offset],BinaryExpression[ARITHMUL,IdentifierExpression[~i~0,],BinaryExpression[ARITHMUL,BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~p~0,]],IdentifierExpression[~n~0,]]]],BinaryExpression[ARITHMUL,IdentifierExpression[~j~0,],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~p~0,]]]],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~k~0,]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#B~0,],base],BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#B~0,],offset],BinaryExpression[ARITHMUL,IdentifierExpression[~i~0,],BinaryExpression[ARITHMUL,BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~p~0,]],IdentifierExpression[~n~0,]]]],BinaryExpression[ARITHMUL,IdentifierExpression[~j~0,],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~p~0,]]]],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~k~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#C~0,],base],BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#C~0,],offset],BinaryExpression[ARITHMUL,IdentifierExpression[~i~0,],BinaryExpression[ARITHMUL,BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~p~0,]],IdentifierExpression[~n~0,]]]],BinaryExpression[ARITHMUL,IdentifierExpression[~j~0,],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~p~0,]]]],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~k~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-06 10:45:59,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 10:45:59,116 INFO L208 MainTranslator]: Completed translation [2021-01-06 10:45:59,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:45:59 WrapperNode [2021-01-06 10:45:59,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 10:45:59,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 10:45:59,119 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 10:45:59,119 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 10:45:59,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:45:59" (1/1) ... [2021-01-06 10:45:59,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:45:59" (1/1) ... [2021-01-06 10:45:59,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 10:45:59,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 10:45:59,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 10:45:59,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 10:45:59,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:45:59" (1/1) ... [2021-01-06 10:45:59,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:45:59" (1/1) ... [2021-01-06 10:45:59,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:45:59" (1/1) ... [2021-01-06 10:45:59,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:45:59" (1/1) ... [2021-01-06 10:45:59,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:45:59" (1/1) ... [2021-01-06 10:45:59,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:45:59" (1/1) ... [2021-01-06 10:45:59,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:45:59" (1/1) ... [2021-01-06 10:45:59,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 10:45:59,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 10:45:59,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 10:45:59,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 10:45:59,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:45:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 10:45:59,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 10:45:59,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 10:45:59,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 10:45:59,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 10:45:59,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 10:45:59,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 10:45:59,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 10:45:59,814 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 10:45:59,815 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-01-06 10:45:59,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 10:45:59 BoogieIcfgContainer [2021-01-06 10:45:59,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 10:45:59,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 10:45:59,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 10:45:59,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 10:45:59,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 10:45:58" (1/3) ... [2021-01-06 10:45:59,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48317747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 10:45:59, skipping insertion in model container [2021-01-06 10:45:59,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:45:59" (2/3) ... [2021-01-06 10:45:59,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48317747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 10:45:59, skipping insertion in model container [2021-01-06 10:45:59,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 10:45:59" (3/3) ... [2021-01-06 10:45:59,830 INFO L111 eAbstractionObserver]: Analyzing ICFG add-3-n-u.c [2021-01-06 10:45:59,839 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 10:45:59,846 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 10:45:59,872 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 10:45:59,908 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 10:45:59,908 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 10:45:59,908 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 10:45:59,909 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 10:45:59,909 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 10:45:59,909 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 10:45:59,909 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 10:45:59,909 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 10:45:59,943 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2021-01-06 10:45:59,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 10:45:59,956 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:45:59,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:45:59,959 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:45:59,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:45:59,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1568356865, now seen corresponding path program 1 times [2021-01-06 10:45:59,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:45:59,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131927158] [2021-01-06 10:45:59,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:46:00,154 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:46:00,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [178456513] [2021-01-06 10:46:00,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:46:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:46:00,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 1 conjunts are in the unsatisfiable core [2021-01-06 10:46:00,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:46:00,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:46:00,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131927158] [2021-01-06 10:46:00,418 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:46:00,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178456513] [2021-01-06 10:46:00,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:46:00,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 10:46:00,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689796272] [2021-01-06 10:46:00,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 10:46:00,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:46:00,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 10:46:00,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 10:46:00,468 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2021-01-06 10:46:00,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:46:00,500 INFO L93 Difference]: Finished difference Result 52 states and 88 transitions. [2021-01-06 10:46:00,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 10:46:00,502 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2021-01-06 10:46:00,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:46:00,525 INFO L225 Difference]: With dead ends: 52 [2021-01-06 10:46:00,525 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 10:46:00,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 10:46:00,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 10:46:00,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-01-06 10:46:00,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-06 10:46:00,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2021-01-06 10:46:00,609 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 11 [2021-01-06 10:46:00,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:46:00,610 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2021-01-06 10:46:00,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 10:46:00,611 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2021-01-06 10:46:00,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 10:46:00,612 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:46:00,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:46:00,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-01-06 10:46:00,828 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:46:00,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:46:00,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1115669473, now seen corresponding path program 1 times [2021-01-06 10:46:00,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:46:00,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377971702] [2021-01-06 10:46:00,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:46:00,854 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:46:00,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754735413] [2021-01-06 10:46:00,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:46:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:46:00,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 10:46:00,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:46:00,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:46:00,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377971702] [2021-01-06 10:46:00,998 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:46:00,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754735413] [2021-01-06 10:46:00,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:46:00,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 10:46:00,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317895970] [2021-01-06 10:46:01,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 10:46:01,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:46:01,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 10:46:01,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 10:46:01,003 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 3 states. [2021-01-06 10:46:01,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:46:01,051 INFO L93 Difference]: Finished difference Result 44 states and 60 transitions. [2021-01-06 10:46:01,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 10:46:01,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2021-01-06 10:46:01,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:46:01,054 INFO L225 Difference]: With dead ends: 44 [2021-01-06 10:46:01,054 INFO L226 Difference]: Without dead ends: 28 [2021-01-06 10:46:01,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 10:46:01,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-01-06 10:46:01,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2021-01-06 10:46:01,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-01-06 10:46:01,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2021-01-06 10:46:01,064 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 11 [2021-01-06 10:46:01,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:46:01,065 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2021-01-06 10:46:01,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 10:46:01,065 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2021-01-06 10:46:01,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 10:46:01,066 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:46:01,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:46:01,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:46:01,280 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:46:01,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:46:01,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1536116311, now seen corresponding path program 1 times [2021-01-06 10:46:01,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:46:01,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943675672] [2021-01-06 10:46:01,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:46:01,294 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:46:01,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621006843] [2021-01-06 10:46:01,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:46:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:46:01,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 10:46:01,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:46:01,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:46:01,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943675672] [2021-01-06 10:46:01,435 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:46:01,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621006843] [2021-01-06 10:46:01,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:46:01,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 10:46:01,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045348511] [2021-01-06 10:46:01,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 10:46:01,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:46:01,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 10:46:01,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 10:46:01,438 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand 4 states. [2021-01-06 10:46:01,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:46:01,562 INFO L93 Difference]: Finished difference Result 61 states and 84 transitions. [2021-01-06 10:46:01,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 10:46:01,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-01-06 10:46:01,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:46:01,565 INFO L225 Difference]: With dead ends: 61 [2021-01-06 10:46:01,565 INFO L226 Difference]: Without dead ends: 40 [2021-01-06 10:46:01,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 10:46:01,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-01-06 10:46:01,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2021-01-06 10:46:01,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-06 10:46:01,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-01-06 10:46:01,576 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 14 [2021-01-06 10:46:01,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:46:01,577 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-01-06 10:46:01,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 10:46:01,577 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2021-01-06 10:46:01,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 10:46:01,578 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:46:01,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:46:01,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:46:01,793 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:46:01,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:46:01,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1209800511, now seen corresponding path program 1 times [2021-01-06 10:46:01,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:46:01,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107343181] [2021-01-06 10:46:01,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:46:01,814 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:46:01,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [558459431] [2021-01-06 10:46:01,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:46:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:46:01,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 10:46:01,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:46:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:46:01,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107343181] [2021-01-06 10:46:01,927 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:46:01,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558459431] [2021-01-06 10:46:01,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:46:01,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 10:46:01,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074924171] [2021-01-06 10:46:01,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 10:46:01,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:46:01,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 10:46:01,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 10:46:01,934 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 4 states. [2021-01-06 10:46:01,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:46:01,999 INFO L93 Difference]: Finished difference Result 61 states and 81 transitions. [2021-01-06 10:46:02,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 10:46:02,000 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2021-01-06 10:46:02,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:46:02,001 INFO L225 Difference]: With dead ends: 61 [2021-01-06 10:46:02,001 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 10:46:02,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 10:46:02,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 10:46:02,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2021-01-06 10:46:02,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-01-06 10:46:02,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2021-01-06 10:46:02,012 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 17 [2021-01-06 10:46:02,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:46:02,012 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2021-01-06 10:46:02,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 10:46:02,013 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2021-01-06 10:46:02,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 10:46:02,013 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:46:02,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:46:02,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:46:02,228 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:46:02,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:46:02,230 INFO L82 PathProgramCache]: Analyzing trace with hash -97783142, now seen corresponding path program 1 times [2021-01-06 10:46:02,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:46:02,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215868171] [2021-01-06 10:46:02,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:46:02,242 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:46:02,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [793122016] [2021-01-06 10:46:02,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:46:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:46:02,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 10:46:02,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:46:02,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:46:02,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215868171] [2021-01-06 10:46:02,358 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:46:02,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793122016] [2021-01-06 10:46:02,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:46:02,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 10:46:02,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470038792] [2021-01-06 10:46:02,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 10:46:02,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:46:02,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 10:46:02,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 10:46:02,361 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand 5 states. [2021-01-06 10:46:02,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:46:02,447 INFO L93 Difference]: Finished difference Result 71 states and 91 transitions. [2021-01-06 10:46:02,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 10:46:02,448 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2021-01-06 10:46:02,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:46:02,449 INFO L225 Difference]: With dead ends: 71 [2021-01-06 10:46:02,450 INFO L226 Difference]: Without dead ends: 44 [2021-01-06 10:46:02,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 10:46:02,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-01-06 10:46:02,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2021-01-06 10:46:02,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-06 10:46:02,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2021-01-06 10:46:02,462 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 18 [2021-01-06 10:46:02,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:46:02,462 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2021-01-06 10:46:02,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 10:46:02,463 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2021-01-06 10:46:02,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 10:46:02,463 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:46:02,464 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:46:02,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:46:02,678 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:46:02,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:46:02,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1978170721, now seen corresponding path program 2 times [2021-01-06 10:46:02,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:46:02,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753881458] [2021-01-06 10:46:02,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:46:02,691 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:46:02,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1469807948] [2021-01-06 10:46:02,694 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:46:02,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-06 10:46:02,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:46:02,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 10:46:02,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:46:02,824 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-01-06 10:46:02,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753881458] [2021-01-06 10:46:02,825 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:46:02,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469807948] [2021-01-06 10:46:02,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:46:02,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 10:46:02,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522816760] [2021-01-06 10:46:02,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 10:46:02,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:46:02,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 10:46:02,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 10:46:02,827 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand 4 states. [2021-01-06 10:46:02,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:46:02,877 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2021-01-06 10:46:02,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 10:46:02,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2021-01-06 10:46:02,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:46:02,879 INFO L225 Difference]: With dead ends: 79 [2021-01-06 10:46:02,880 INFO L226 Difference]: Without dead ends: 64 [2021-01-06 10:46:02,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 10:46:02,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-01-06 10:46:02,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 36. [2021-01-06 10:46:02,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-01-06 10:46:02,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2021-01-06 10:46:02,897 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 19 [2021-01-06 10:46:02,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:46:02,898 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2021-01-06 10:46:02,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 10:46:02,898 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2021-01-06 10:46:02,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 10:46:02,899 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:46:02,899 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:46:03,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:46:03,101 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:46:03,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:46:03,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1749813085, now seen corresponding path program 1 times [2021-01-06 10:46:03,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:46:03,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662230933] [2021-01-06 10:46:03,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:46:03,114 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:46:03,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2072875168] [2021-01-06 10:46:03,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:46:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:46:03,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 10:46:03,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:46:03,245 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-01-06 10:46:03,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662230933] [2021-01-06 10:46:03,246 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:46:03,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072875168] [2021-01-06 10:46:03,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:46:03,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 10:46:03,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136105688] [2021-01-06 10:46:03,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 10:46:03,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:46:03,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 10:46:03,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-06 10:46:03,249 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand 6 states. [2021-01-06 10:46:03,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:46:03,338 INFO L93 Difference]: Finished difference Result 83 states and 103 transitions. [2021-01-06 10:46:03,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 10:46:03,338 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2021-01-06 10:46:03,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:46:03,339 INFO L225 Difference]: With dead ends: 83 [2021-01-06 10:46:03,339 INFO L226 Difference]: Without dead ends: 50 [2021-01-06 10:46:03,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-06 10:46:03,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-06 10:46:03,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2021-01-06 10:46:03,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-01-06 10:46:03,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2021-01-06 10:46:03,350 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 27 [2021-01-06 10:46:03,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:46:03,350 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2021-01-06 10:46:03,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 10:46:03,351 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2021-01-06 10:46:03,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 10:46:03,351 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:46:03,352 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:46:03,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:46:03,580 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:46:03,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:46:03,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1516282694, now seen corresponding path program 2 times [2021-01-06 10:46:03,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:46:03,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293015916] [2021-01-06 10:46:03,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:46:03,592 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:46:03,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [466106658] [2021-01-06 10:46:03,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:46:03,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 10:46:03,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:46:03,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 10:46:03,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:46:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 10:46:03,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293015916] [2021-01-06 10:46:03,771 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:46:03,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466106658] [2021-01-06 10:46:03,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:46:03,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 10:46:03,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150941816] [2021-01-06 10:46:03,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 10:46:03,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:46:03,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 10:46:03,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-06 10:46:03,773 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand 7 states. [2021-01-06 10:46:03,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:46:03,904 INFO L93 Difference]: Finished difference Result 95 states and 116 transitions. [2021-01-06 10:46:03,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 10:46:03,905 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2021-01-06 10:46:03,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:46:03,906 INFO L225 Difference]: With dead ends: 95 [2021-01-06 10:46:03,906 INFO L226 Difference]: Without dead ends: 57 [2021-01-06 10:46:03,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-06 10:46:03,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-01-06 10:46:03,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2021-01-06 10:46:03,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-06 10:46:03,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2021-01-06 10:46:03,917 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 29 [2021-01-06 10:46:03,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:46:03,917 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2021-01-06 10:46:03,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 10:46:03,918 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2021-01-06 10:46:03,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 10:46:03,919 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:46:03,919 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:46:04,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-01-06 10:46:04,134 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:46:04,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:46:04,136 INFO L82 PathProgramCache]: Analyzing trace with hash 53106109, now seen corresponding path program 3 times [2021-01-06 10:46:04,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:46:04,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423222333] [2021-01-06 10:46:04,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:46:04,147 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:46:04,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208241769] [2021-01-06 10:46:04,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:46:04,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 10:46:04,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:46:04,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 10:46:04,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:46:04,316 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-01-06 10:46:04,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423222333] [2021-01-06 10:46:04,317 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:46:04,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208241769] [2021-01-06 10:46:04,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:46:04,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 10:46:04,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119912521] [2021-01-06 10:46:04,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 10:46:04,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:46:04,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 10:46:04,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 10:46:04,319 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand 5 states. [2021-01-06 10:46:04,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:46:04,412 INFO L93 Difference]: Finished difference Result 157 states and 196 transitions. [2021-01-06 10:46:04,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 10:46:04,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2021-01-06 10:46:04,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:46:04,416 INFO L225 Difference]: With dead ends: 157 [2021-01-06 10:46:04,416 INFO L226 Difference]: Without dead ends: 124 [2021-01-06 10:46:04,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 10:46:04,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-01-06 10:46:04,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 66. [2021-01-06 10:46:04,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-06 10:46:04,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2021-01-06 10:46:04,435 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 31 [2021-01-06 10:46:04,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:46:04,436 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2021-01-06 10:46:04,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 10:46:04,436 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2021-01-06 10:46:04,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-06 10:46:04,438 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:46:04,438 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:46:04,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:46:04,652 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:46:04,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:46:04,653 INFO L82 PathProgramCache]: Analyzing trace with hash -893728359, now seen corresponding path program 4 times [2021-01-06 10:46:04,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:46:04,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407899777] [2021-01-06 10:46:04,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:46:04,667 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:46:04,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812402869] [2021-01-06 10:46:04,667 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:46:06,990 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 10:46:06,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:46:07,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 10:46:07,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:46:07,089 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-01-06 10:46:07,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407899777] [2021-01-06 10:46:07,090 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:46:07,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812402869] [2021-01-06 10:46:07,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:46:07,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 10:46:07,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401538328] [2021-01-06 10:46:07,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 10:46:07,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:46:07,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 10:46:07,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 10:46:07,093 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand 5 states. [2021-01-06 10:46:07,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:46:07,218 INFO L93 Difference]: Finished difference Result 207 states and 256 transitions. [2021-01-06 10:46:07,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 10:46:07,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2021-01-06 10:46:07,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:46:07,221 INFO L225 Difference]: With dead ends: 207 [2021-01-06 10:46:07,222 INFO L226 Difference]: Without dead ends: 152 [2021-01-06 10:46:07,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 10:46:07,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-01-06 10:46:07,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 109. [2021-01-06 10:46:07,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-01-06 10:46:07,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 133 transitions. [2021-01-06 10:46:07,261 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 133 transitions. Word has length 51 [2021-01-06 10:46:07,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:46:07,261 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 133 transitions. [2021-01-06 10:46:07,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 10:46:07,261 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 133 transitions. [2021-01-06 10:46:07,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-01-06 10:46:07,266 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:46:07,266 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:46:07,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:46:07,480 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:46:07,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:46:07,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1234417409, now seen corresponding path program 5 times [2021-01-06 10:46:07,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:46:07,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712612070] [2021-01-06 10:46:07,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:46:07,496 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:46:07,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [577410683] [2021-01-06 10:46:07,497 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true