/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/copy-3-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 00:52:47,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 00:52:47,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 00:52:47,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 00:52:47,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 00:52:47,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 00:52:47,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 00:52:47,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 00:52:47,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 00:52:47,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 00:52:47,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 00:52:47,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 00:52:47,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 00:52:47,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 00:52:47,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 00:52:47,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 00:52:47,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 00:52:47,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 00:52:47,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 00:52:47,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 00:52:47,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 00:52:47,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 00:52:47,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 00:52:47,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 00:52:47,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 00:52:47,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 00:52:47,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 00:52:47,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 00:52:47,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 00:52:47,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 00:52:47,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 00:52:47,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 00:52:47,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 00:52:47,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 00:52:47,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 00:52:47,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 00:52:47,636 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 00:52:47,664 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 00:52:47,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 00:52:47,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 00:52:47,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 00:52:47,667 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 00:52:47,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 00:52:47,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 00:52:47,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 00:52:47,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 00:52:47,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 00:52:47,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 00:52:47,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 00:52:47,669 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 00:52:47,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 00:52:47,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 00:52:47,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 00:52:47,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 00:52:47,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 00:52:47,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 00:52:47,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 00:52:47,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 00:52:47,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 00:52:47,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 00:52:47,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 00:52:47,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 00:52:47,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 00:52:48,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 00:52:48,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 00:52:48,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 00:52:48,158 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 00:52:48,159 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 00:52:48,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-multidimensional/copy-3-n-u.c [2020-12-23 00:52:48,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/500f3da59/7856516645004a2f80741f7ec2aa5ab0/FLAG6d239c9dd [2020-12-23 00:52:48,907 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 00:52:48,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-multidimensional/copy-3-n-u.c [2020-12-23 00:52:48,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/500f3da59/7856516645004a2f80741f7ec2aa5ab0/FLAG6d239c9dd [2020-12-23 00:52:49,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/500f3da59/7856516645004a2f80741f7ec2aa5ab0 [2020-12-23 00:52:49,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 00:52:49,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 00:52:49,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 00:52:49,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 00:52:49,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 00:52:49,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:52:49" (1/1) ... [2020-12-23 00:52:49,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a8f262c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:49, skipping insertion in model container [2020-12-23 00:52:49,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:52:49" (1/1) ... [2020-12-23 00:52:49,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 00:52:49,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 00:52:49,465 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/copy-3-n-u.c[322,335] 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[~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[~A~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,] [2020-12-23 00:52:49,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 00:52:49,507 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 00:52:49,522 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/copy-3-n-u.c[322,335] 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[~#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[~#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: 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,] [2020-12-23 00:52:49,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 00:52:49,561 INFO L208 MainTranslator]: Completed translation [2020-12-23 00:52:49,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:49 WrapperNode [2020-12-23 00:52:49,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 00:52:49,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 00:52:49,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 00:52:49,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 00:52:49,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:49" (1/1) ... [2020-12-23 00:52:49,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:49" (1/1) ... [2020-12-23 00:52:49,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 00:52:49,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 00:52:49,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 00:52:49,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 00:52:49,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:49" (1/1) ... [2020-12-23 00:52:49,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:49" (1/1) ... [2020-12-23 00:52:49,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:49" (1/1) ... [2020-12-23 00:52:49,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:49" (1/1) ... [2020-12-23 00:52:49,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:49" (1/1) ... [2020-12-23 00:52:49,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:49" (1/1) ... [2020-12-23 00:52:49,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:49" (1/1) ... [2020-12-23 00:52:49,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 00:52:49,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 00:52:49,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 00:52:49,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 00:52:49,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:49" (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 00:52:49,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 00:52:49,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 00:52:49,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 00:52:49,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 00:52:49,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 00:52:49,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 00:52:49,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 00:52:50,204 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 00:52:50,205 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2020-12-23 00:52:50,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:52:50 BoogieIcfgContainer [2020-12-23 00:52:50,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 00:52:50,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 00:52:50,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 00:52:50,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 00:52:50,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 12:52:49" (1/3) ... [2020-12-23 00:52:50,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@348f09cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:52:50, skipping insertion in model container [2020-12-23 00:52:50,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:49" (2/3) ... [2020-12-23 00:52:50,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@348f09cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:52:50, skipping insertion in model container [2020-12-23 00:52:50,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:52:50" (3/3) ... [2020-12-23 00:52:50,237 INFO L111 eAbstractionObserver]: Analyzing ICFG copy-3-n-u.c [2020-12-23 00:52:50,260 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 00:52:50,274 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 00:52:50,320 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 00:52:50,356 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 00:52:50,356 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 00:52:50,357 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 00:52:50,357 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 00:52:50,357 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 00:52:50,357 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 00:52:50,357 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 00:52:50,358 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 00:52:50,377 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-12-23 00:52:50,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 00:52:50,407 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:52:50,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:52:50,408 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:52:50,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:52:50,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1568356865, now seen corresponding path program 1 times [2020-12-23 00:52:50,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:52:50,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424479336] [2020-12-23 00:52:50,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:52:50,588 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 00:52:50,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284570828] [2020-12-23 00:52:50,589 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 00:52:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:52:50,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-23 00:52:50,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:52:50,837 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 00:52:50,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424479336] [2020-12-23 00:52:50,840 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 00:52:50,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284570828] [2020-12-23 00:52:50,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 00:52:50,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 00:52:50,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988894925] [2020-12-23 00:52:50,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 00:52:50,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:52:50,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 00:52:50,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 00:52:50,885 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-12-23 00:52:50,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:52:50,921 INFO L93 Difference]: Finished difference Result 52 states and 88 transitions. [2020-12-23 00:52:50,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 00:52:50,923 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 00:52:50,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:52:50,953 INFO L225 Difference]: With dead ends: 52 [2020-12-23 00:52:50,954 INFO L226 Difference]: Without dead ends: 23 [2020-12-23 00:52:50,958 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 [2020-12-23 00:52:50,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-23 00:52:51,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-23 00:52:51,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 00:52:51,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2020-12-23 00:52:51,012 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 11 [2020-12-23 00:52:51,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:52:51,014 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-12-23 00:52:51,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 00:52:51,014 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-12-23 00:52:51,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 00:52:51,016 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:52:51,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:52:51,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-23 00:52:51,219 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:52:51,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:52:51,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1115669473, now seen corresponding path program 1 times [2020-12-23 00:52:51,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:52:51,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457562624] [2020-12-23 00:52:51,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:52:51,235 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 00:52:51,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616995584] [2020-12-23 00:52:51,239 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 00:52:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:52:51,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 00:52:51,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:52:51,379 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 00:52:51,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457562624] [2020-12-23 00:52:51,380 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 00:52:51,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616995584] [2020-12-23 00:52:51,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 00:52:51,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 00:52:51,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593780975] [2020-12-23 00:52:51,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 00:52:51,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:52:51,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 00:52:51,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 00:52:51,384 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 3 states. [2020-12-23 00:52:51,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:52:51,426 INFO L93 Difference]: Finished difference Result 44 states and 60 transitions. [2020-12-23 00:52:51,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 00:52:51,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-12-23 00:52:51,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:52:51,428 INFO L225 Difference]: With dead ends: 44 [2020-12-23 00:52:51,428 INFO L226 Difference]: Without dead ends: 28 [2020-12-23 00:52:51,430 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 [2020-12-23 00:52:51,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-23 00:52:51,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2020-12-23 00:52:51,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-23 00:52:51,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2020-12-23 00:52:51,437 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 11 [2020-12-23 00:52:51,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:52:51,437 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2020-12-23 00:52:51,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 00:52:51,438 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2020-12-23 00:52:51,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 00:52:51,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:52:51,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:52:51,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 00:52:51,653 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:52:51,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:52:51,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1536116311, now seen corresponding path program 1 times [2020-12-23 00:52:51,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:52:51,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530349309] [2020-12-23 00:52:51,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:52:51,669 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 00:52:51,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256446258] [2020-12-23 00:52:51,672 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 [2020-12-23 00:52:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:52:51,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 00:52:51,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:52:51,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 00:52:51,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530349309] [2020-12-23 00:52:51,775 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 00:52:51,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256446258] [2020-12-23 00:52:51,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 00:52:51,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 00:52:51,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355263046] [2020-12-23 00:52:51,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 00:52:51,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:52:51,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 00:52:51,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 00:52:51,781 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand 4 states. [2020-12-23 00:52:51,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:52:51,897 INFO L93 Difference]: Finished difference Result 61 states and 84 transitions. [2020-12-23 00:52:51,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 00:52:51,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-23 00:52:51,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:52:51,901 INFO L225 Difference]: With dead ends: 61 [2020-12-23 00:52:51,901 INFO L226 Difference]: Without dead ends: 40 [2020-12-23 00:52:51,902 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 [2020-12-23 00:52:51,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-23 00:52:51,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2020-12-23 00:52:51,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-23 00:52:51,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-12-23 00:52:51,910 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 14 [2020-12-23 00:52:51,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:52:51,911 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-12-23 00:52:51,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 00:52:51,911 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-12-23 00:52:51,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 00:52:51,912 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:52:51,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:52:52,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 00:52:52,127 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:52:52,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:52:52,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1209800511, now seen corresponding path program 1 times [2020-12-23 00:52:52,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:52:52,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429076495] [2020-12-23 00:52:52,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:52:52,141 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 00:52:52,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685208136] [2020-12-23 00:52:52,142 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 [2020-12-23 00:52:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:52:52,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 00:52:52,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:52:52,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 00:52:52,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429076495] [2020-12-23 00:52:52,248 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 00:52:52,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685208136] [2020-12-23 00:52:52,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 00:52:52,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 00:52:52,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138192612] [2020-12-23 00:52:52,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 00:52:52,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:52:52,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 00:52:52,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 00:52:52,251 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 4 states. [2020-12-23 00:52:52,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:52:52,319 INFO L93 Difference]: Finished difference Result 61 states and 81 transitions. [2020-12-23 00:52:52,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 00:52:52,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-23 00:52:52,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:52:52,321 INFO L225 Difference]: With dead ends: 61 [2020-12-23 00:52:52,321 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 00:52:52,322 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 [2020-12-23 00:52:52,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 00:52:52,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2020-12-23 00:52:52,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-23 00:52:52,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2020-12-23 00:52:52,331 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 17 [2020-12-23 00:52:52,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:52:52,332 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2020-12-23 00:52:52,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 00:52:52,332 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2020-12-23 00:52:52,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 00:52:52,333 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:52:52,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:52:52,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 00:52:52,540 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:52:52,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:52:52,542 INFO L82 PathProgramCache]: Analyzing trace with hash -97783142, now seen corresponding path program 1 times [2020-12-23 00:52:52,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:52:52,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583236050] [2020-12-23 00:52:52,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:52:52,554 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 00:52:52,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988148083] [2020-12-23 00:52:52,555 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 [2020-12-23 00:52:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:52:52,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 00:52:52,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:52:52,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 00:52:52,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583236050] [2020-12-23 00:52:52,704 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 00:52:52,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988148083] [2020-12-23 00:52:52,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 00:52:52,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 00:52:52,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156369223] [2020-12-23 00:52:52,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 00:52:52,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:52:52,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 00:52:52,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 00:52:52,707 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand 5 states. [2020-12-23 00:52:52,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:52:52,796 INFO L93 Difference]: Finished difference Result 71 states and 91 transitions. [2020-12-23 00:52:52,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 00:52:52,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-23 00:52:52,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:52:52,798 INFO L225 Difference]: With dead ends: 71 [2020-12-23 00:52:52,798 INFO L226 Difference]: Without dead ends: 44 [2020-12-23 00:52:52,799 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 [2020-12-23 00:52:52,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-23 00:52:52,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2020-12-23 00:52:52,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 00:52:52,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2020-12-23 00:52:52,808 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 18 [2020-12-23 00:52:52,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:52:52,808 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2020-12-23 00:52:52,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 00:52:52,808 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2020-12-23 00:52:52,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 00:52:52,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:52:52,809 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 00:52:53,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 00:52:53,024 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:52:53,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:52:53,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1978170721, now seen corresponding path program 2 times [2020-12-23 00:52:53,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:52:53,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171498870] [2020-12-23 00:52:53,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:52:53,036 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 00:52:53,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [793573375] [2020-12-23 00:52:53,037 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 [2020-12-23 00:52:53,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 00:52:53,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 00:52:53,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 00:52:53,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:52:53,120 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-23 00:52:53,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171498870] [2020-12-23 00:52:53,122 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 00:52:53,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793573375] [2020-12-23 00:52:53,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 00:52:53,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 00:52:53,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118513925] [2020-12-23 00:52:53,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 00:52:53,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:52:53,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 00:52:53,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 00:52:53,124 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand 4 states. [2020-12-23 00:52:53,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:52:53,176 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2020-12-23 00:52:53,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 00:52:53,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-12-23 00:52:53,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:52:53,179 INFO L225 Difference]: With dead ends: 79 [2020-12-23 00:52:53,179 INFO L226 Difference]: Without dead ends: 64 [2020-12-23 00:52:53,180 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 [2020-12-23 00:52:53,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-23 00:52:53,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 36. [2020-12-23 00:52:53,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-23 00:52:53,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2020-12-23 00:52:53,190 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 19 [2020-12-23 00:52:53,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:52:53,191 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2020-12-23 00:52:53,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 00:52:53,191 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2020-12-23 00:52:53,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 00:52:53,192 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:52:53,192 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] [2020-12-23 00:52:53,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 00:52:53,407 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:52:53,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:52:53,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1749813085, now seen corresponding path program 1 times [2020-12-23 00:52:53,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:52:53,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776402078] [2020-12-23 00:52:53,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:52:53,424 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 00:52:53,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [954273661] [2020-12-23 00:52:53,425 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 [2020-12-23 00:52:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 00:52:53,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 00:52:53,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:52:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-23 00:52:53,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776402078] [2020-12-23 00:52:53,561 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 00:52:53,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954273661] [2020-12-23 00:52:53,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 00:52:53,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 00:52:53,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506963415] [2020-12-23 00:52:53,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 00:52:53,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:52:53,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 00:52:53,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 00:52:53,564 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand 6 states. [2020-12-23 00:52:53,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:52:53,669 INFO L93 Difference]: Finished difference Result 83 states and 103 transitions. [2020-12-23 00:52:53,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 00:52:53,670 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-23 00:52:53,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:52:53,672 INFO L225 Difference]: With dead ends: 83 [2020-12-23 00:52:53,672 INFO L226 Difference]: Without dead ends: 50 [2020-12-23 00:52:53,673 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 [2020-12-23 00:52:53,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-23 00:52:53,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2020-12-23 00:52:53,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-23 00:52:53,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2020-12-23 00:52:53,683 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 27 [2020-12-23 00:52:53,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:52:53,683 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2020-12-23 00:52:53,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 00:52:53,684 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2020-12-23 00:52:53,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 00:52:53,685 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:52:53,685 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] [2020-12-23 00:52:53,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 00:52:53,900 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:52:53,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:52:53,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1516282694, now seen corresponding path program 2 times [2020-12-23 00:52:53,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:52:53,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814401047] [2020-12-23 00:52:53,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:52:53,913 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 00:52:53,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [47594416] [2020-12-23 00:52:53,913 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 [2020-12-23 00:52:53,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 00:52:53,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 00:52:53,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 00:52:53,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:52:54,112 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 00:52:54,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814401047] [2020-12-23 00:52:54,113 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 00:52:54,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47594416] [2020-12-23 00:52:54,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 00:52:54,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 00:52:54,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870831036] [2020-12-23 00:52:54,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 00:52:54,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:52:54,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 00:52:54,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 00:52:54,116 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand 7 states. [2020-12-23 00:52:54,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:52:54,219 INFO L93 Difference]: Finished difference Result 95 states and 116 transitions. [2020-12-23 00:52:54,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 00:52:54,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-12-23 00:52:54,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:52:54,221 INFO L225 Difference]: With dead ends: 95 [2020-12-23 00:52:54,221 INFO L226 Difference]: Without dead ends: 57 [2020-12-23 00:52:54,222 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 [2020-12-23 00:52:54,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-23 00:52:54,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2020-12-23 00:52:54,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 00:52:54,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2020-12-23 00:52:54,232 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 29 [2020-12-23 00:52:54,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:52:54,233 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2020-12-23 00:52:54,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 00:52:54,233 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2020-12-23 00:52:54,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 00:52:54,234 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:52:54,234 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] [2020-12-23 00:52:54,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-12-23 00:52:54,449 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:52:54,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:52:54,451 INFO L82 PathProgramCache]: Analyzing trace with hash 53106109, now seen corresponding path program 3 times [2020-12-23 00:52:54,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:52:54,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357055233] [2020-12-23 00:52:54,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:52:54,462 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 00:52:54,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1491575922] [2020-12-23 00:52:54,462 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 [2020-12-23 00:52:54,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 00:52:54,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 00:52:54,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 00:52:54,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:52:54,585 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-23 00:52:54,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357055233] [2020-12-23 00:52:54,586 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 00:52:54,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491575922] [2020-12-23 00:52:54,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 00:52:54,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 00:52:54,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601322507] [2020-12-23 00:52:54,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 00:52:54,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:52:54,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 00:52:54,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 00:52:54,590 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand 5 states. [2020-12-23 00:52:54,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:52:54,674 INFO L93 Difference]: Finished difference Result 157 states and 196 transitions. [2020-12-23 00:52:54,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 00:52:54,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-12-23 00:52:54,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:52:54,678 INFO L225 Difference]: With dead ends: 157 [2020-12-23 00:52:54,678 INFO L226 Difference]: Without dead ends: 124 [2020-12-23 00:52:54,679 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 [2020-12-23 00:52:54,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-23 00:52:54,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 66. [2020-12-23 00:52:54,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 00:52:54,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2020-12-23 00:52:54,697 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 31 [2020-12-23 00:52:54,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:52:54,697 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2020-12-23 00:52:54,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 00:52:54,697 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2020-12-23 00:52:54,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-23 00:52:54,699 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:52:54,699 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] [2020-12-23 00:52:54,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 00:52:54,913 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:52:54,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:52:54,914 INFO L82 PathProgramCache]: Analyzing trace with hash -893728359, now seen corresponding path program 4 times [2020-12-23 00:52:54,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:52:54,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224745162] [2020-12-23 00:52:54,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:52:54,925 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 00:52:54,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1766621986] [2020-12-23 00:52:54,926 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 [2020-12-23 00:52:55,189 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 00:52:55,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 00:52:55,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 00:52:55,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 00:52:55,261 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-12-23 00:52:55,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224745162] [2020-12-23 00:52:55,262 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 00:52:55,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766621986] [2020-12-23 00:52:55,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 00:52:55,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 00:52:55,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74158336] [2020-12-23 00:52:55,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 00:52:55,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 00:52:55,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 00:52:55,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 00:52:55,264 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand 5 states. [2020-12-23 00:52:55,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 00:52:55,375 INFO L93 Difference]: Finished difference Result 207 states and 256 transitions. [2020-12-23 00:52:55,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 00:52:55,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-12-23 00:52:55,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 00:52:55,377 INFO L225 Difference]: With dead ends: 207 [2020-12-23 00:52:55,377 INFO L226 Difference]: Without dead ends: 152 [2020-12-23 00:52:55,378 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 [2020-12-23 00:52:55,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-12-23 00:52:55,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 109. [2020-12-23 00:52:55,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-23 00:52:55,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 133 transitions. [2020-12-23 00:52:55,418 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 133 transitions. Word has length 51 [2020-12-23 00:52:55,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 00:52:55,421 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 133 transitions. [2020-12-23 00:52:55,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 00:52:55,421 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 133 transitions. [2020-12-23 00:52:55,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 00:52:55,428 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 00:52:55,428 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] [2020-12-23 00:52:55,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 00:52:55,636 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 00:52:55,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 00:52:55,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1234417409, now seen corresponding path program 5 times [2020-12-23 00:52:55,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 00:52:55,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286320407] [2020-12-23 00:52:55,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 00:52:55,672 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 00:52:55,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [200901521] [2020-12-23 00:52:55,673 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