/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/heap-manipulation/merge_sort-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:07:17,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:07:17,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:07:17,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:07:17,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:07:17,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:07:17,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:07:17,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:07:17,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:07:17,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:07:17,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:07:17,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:07:17,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:07:17,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:07:17,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:07:17,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:07:17,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:07:17,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:07:17,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:07:17,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:07:17,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:07:17,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:07:17,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:07:17,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:07:17,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 16:07:17,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 16:07:17,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 16:07:17,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 16:07:17,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 16:07:17,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 16:07:17,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:07:17,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:07:17,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:07:17,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:07:17,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:07:17,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:07:17,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:07:17,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:07:17,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:07:17,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:07:17,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:07:17,946 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 16:07:17,991 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:07:17,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:07:17,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:07:17,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:07:17,997 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:07:17,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:07:17,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:07:17,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:07:17,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:07:17,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:07:17,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:07:18,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:07:18,000 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:07:18,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:07:18,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:07:18,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:07:18,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:07:18,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:07:18,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:07:18,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:07:18,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:07:18,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:07:18,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:07:18,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:07:18,002 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:07:18,002 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:07:18,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:07:18,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:07:18,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:07:18,433 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:07:18,434 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:07:18,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2021-01-06 16:07:18,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/38cc2c89f/d4fae4cb4f2b405e96ef4ba1759d2666/FLAG08561bc6c [2021-01-06 16:07:19,307 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:07:19,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2021-01-06 16:07:19,327 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/38cc2c89f/d4fae4cb4f2b405e96ef4ba1759d2666/FLAG08561bc6c [2021-01-06 16:07:19,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/38cc2c89f/d4fae4cb4f2b405e96ef4ba1759d2666 [2021-01-06 16:07:19,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:07:19,536 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:07:19,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:07:19,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:07:19,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:07:19,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:07:19" (1/1) ... [2021-01-06 16:07:19,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44612652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:19, skipping insertion in model container [2021-01-06 16:07:19,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:07:19" (1/1) ... [2021-01-06 16:07:19,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:07:19,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 16:07:19,949 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/heap-manipulation/merge_sort-1.i[22632,22645] left hand side expression in assignment: address: IdentifierExpression[~data,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~node~0,],base],StructAccessExpression[IdentifierExpression[~node~0,],offset]]] left hand side expression in assignment: address: IdentifierExpression[#t~mem7,] left hand side expression in assignment: address: IdentifierExpression[~dst,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~data,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~data,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~dst~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~data,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~data,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~dst~0,] left hand side expression in assignment: lhs: VariableLHS[~data,] left hand side expression in assignment: lhs: VariableLHS[~shape,] left hand side expression in assignment: lhs: VariableLHS[~pos~0,] left hand side expression in assignment: lhs: VariableLHS[~pos~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~node~1,],base],StructAccessExpression[IdentifierExpression[~node~1,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~node~1,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~node~1,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~item~0,],base],StructAccessExpression[IdentifierExpression[~item~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~item~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~item~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~data~0,] left hand side expression in assignment: lhs: VariableLHS[~data~0,] left hand side expression in assignment: lhs: VariableLHS[~node~2,] [2021-01-06 16:07:20,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:07:20,039 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 16:07:20,073 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/heap-manipulation/merge_sort-1.i[22632,22645] left hand side expression in assignment: address: IdentifierExpression[~data,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~node~0,],base],StructAccessExpression[IdentifierExpression[~node~0,],offset]]] left hand side expression in assignment: address: IdentifierExpression[#t~mem7,] left hand side expression in assignment: address: IdentifierExpression[~dst,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~data,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~data,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~dst~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~data,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~data,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~dst~0,] left hand side expression in assignment: lhs: VariableLHS[~data,] left hand side expression in assignment: lhs: VariableLHS[~shape,] left hand side expression in assignment: lhs: VariableLHS[~pos~0,] left hand side expression in assignment: lhs: VariableLHS[~pos~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~node~1,],base],StructAccessExpression[IdentifierExpression[~node~1,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~node~1,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~node~1,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~item~0,],base],StructAccessExpression[IdentifierExpression[~item~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~item~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~item~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~data~0,] left hand side expression in assignment: lhs: VariableLHS[~data~0,] left hand side expression in assignment: lhs: VariableLHS[~node~2,] [2021-01-06 16:07:20,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:07:20,158 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:07:20,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:20 WrapperNode [2021-01-06 16:07:20,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:07:20,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:07:20,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:07:20,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:07:20,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:20" (1/1) ... [2021-01-06 16:07:20,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:20" (1/1) ... [2021-01-06 16:07:20,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:07:20,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:07:20,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:07:20,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:07:20,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:20" (1/1) ... [2021-01-06 16:07:20,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:20" (1/1) ... [2021-01-06 16:07:20,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:20" (1/1) ... [2021-01-06 16:07:20,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:20" (1/1) ... [2021-01-06 16:07:20,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:20" (1/1) ... [2021-01-06 16:07:20,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:20" (1/1) ... [2021-01-06 16:07:20,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:20" (1/1) ... [2021-01-06 16:07:20,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:07:20,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:07:20,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:07:20,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:07:20,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:20" (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 16:07:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 16:07:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 16:07:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-01-06 16:07:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-01-06 16:07:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:07:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-01-06 16:07:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 16:07:20,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:07:20,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:07:20,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:07:21,333 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:07:21,335 INFO L299 CfgBuilder]: Removed 75 assume(true) statements. [2021-01-06 16:07:21,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:07:21 BoogieIcfgContainer [2021-01-06 16:07:21,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:07:21,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:07:21,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:07:21,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:07:21,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:07:19" (1/3) ... [2021-01-06 16:07:21,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7641f16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:07:21, skipping insertion in model container [2021-01-06 16:07:21,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:20" (2/3) ... [2021-01-06 16:07:21,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7641f16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:07:21, skipping insertion in model container [2021-01-06 16:07:21,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:07:21" (3/3) ... [2021-01-06 16:07:21,347 INFO L111 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2021-01-06 16:07:21,354 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:07:21,360 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2021-01-06 16:07:21,381 INFO L253 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-01-06 16:07:21,407 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:07:21,407 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:07:21,407 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:07:21,407 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:07:21,407 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:07:21,407 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:07:21,408 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:07:21,408 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:07:21,428 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2021-01-06 16:07:21,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-06 16:07:21,434 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:07:21,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-06 16:07:21,435 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:07:21,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:07:21,441 INFO L82 PathProgramCache]: Analyzing trace with hash 890218827, now seen corresponding path program 1 times [2021-01-06 16:07:21,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:07:21,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644393853] [2021-01-06 16:07:21,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:07:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:07:21,597 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 16:07:21,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644393853] [2021-01-06 16:07:21,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:07:21,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:07:21,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566154916] [2021-01-06 16:07:21,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 16:07:21,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:07:21,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 16:07:21,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:07:21,624 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 2 states. [2021-01-06 16:07:21,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:07:21,657 INFO L93 Difference]: Finished difference Result 196 states and 316 transitions. [2021-01-06 16:07:21,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 16:07:21,659 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2021-01-06 16:07:21,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:07:21,670 INFO L225 Difference]: With dead ends: 196 [2021-01-06 16:07:21,670 INFO L226 Difference]: Without dead ends: 92 [2021-01-06 16:07:21,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:07:21,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-01-06 16:07:21,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-01-06 16:07:21,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-01-06 16:07:21,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2021-01-06 16:07:21,722 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 6 [2021-01-06 16:07:21,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:07:21,723 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2021-01-06 16:07:21,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 16:07:21,723 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2021-01-06 16:07:21,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 16:07:21,724 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:07:21,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:07:21,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:07:21,725 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:07:21,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:07:21,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1806865150, now seen corresponding path program 1 times [2021-01-06 16:07:21,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:07:21,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788058882] [2021-01-06 16:07:21,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:07:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:07:21,792 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 16:07:21,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788058882] [2021-01-06 16:07:21,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:07:21,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 16:07:21,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344535138] [2021-01-06 16:07:21,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 16:07:21,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:07:21,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 16:07:21,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:07:21,797 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand 3 states. [2021-01-06 16:07:21,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:07:21,829 INFO L93 Difference]: Finished difference Result 182 states and 202 transitions. [2021-01-06 16:07:21,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 16:07:21,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-01-06 16:07:21,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:07:21,831 INFO L225 Difference]: With dead ends: 182 [2021-01-06 16:07:21,832 INFO L226 Difference]: Without dead ends: 98 [2021-01-06 16:07:21,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 16:07:21,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-01-06 16:07:21,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2021-01-06 16:07:21,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-01-06 16:07:21,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2021-01-06 16:07:21,857 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 7 [2021-01-06 16:07:21,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:07:21,858 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2021-01-06 16:07:21,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 16:07:21,861 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2021-01-06 16:07:21,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 16:07:21,862 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:07:21,862 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:07:21,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:07:21,862 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:07:21,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:07:21,865 INFO L82 PathProgramCache]: Analyzing trace with hash 663763925, now seen corresponding path program 1 times [2021-01-06 16:07:21,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:07:21,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500956516] [2021-01-06 16:07:21,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:07:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:07:21,984 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 16:07:21,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500956516] [2021-01-06 16:07:21,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:07:21,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 16:07:21,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678579653] [2021-01-06 16:07:21,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 16:07:21,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:07:21,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 16:07:21,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:07:21,987 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand 5 states. [2021-01-06 16:07:22,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:07:22,186 INFO L93 Difference]: Finished difference Result 253 states and 288 transitions. [2021-01-06 16:07:22,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 16:07:22,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-01-06 16:07:22,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:07:22,194 INFO L225 Difference]: With dead ends: 253 [2021-01-06 16:07:22,194 INFO L226 Difference]: Without dead ends: 247 [2021-01-06 16:07:22,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 16:07:22,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-01-06 16:07:22,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 96. [2021-01-06 16:07:22,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-01-06 16:07:22,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2021-01-06 16:07:22,219 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 13 [2021-01-06 16:07:22,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:07:22,220 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2021-01-06 16:07:22,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 16:07:22,220 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2021-01-06 16:07:22,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 16:07:22,221 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:07:22,221 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:07:22,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 16:07:22,222 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:07:22,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:07:22,228 INFO L82 PathProgramCache]: Analyzing trace with hash 2036062252, now seen corresponding path program 1 times [2021-01-06 16:07:22,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:07:22,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210148829] [2021-01-06 16:07:22,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:07:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:07:22,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 16:07:22,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210148829] [2021-01-06 16:07:22,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:07:22,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 16:07:22,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38594858] [2021-01-06 16:07:22,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 16:07:22,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:07:22,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 16:07:22,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:07:22,372 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand 5 states. [2021-01-06 16:07:22,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:07:22,620 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2021-01-06 16:07:22,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 16:07:22,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2021-01-06 16:07:22,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:07:22,624 INFO L225 Difference]: With dead ends: 125 [2021-01-06 16:07:22,624 INFO L226 Difference]: Without dead ends: 123 [2021-01-06 16:07:22,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 16:07:22,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-01-06 16:07:22,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 94. [2021-01-06 16:07:22,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-01-06 16:07:22,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2021-01-06 16:07:22,637 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 20 [2021-01-06 16:07:22,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:07:22,637 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2021-01-06 16:07:22,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 16:07:22,637 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2021-01-06 16:07:22,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 16:07:22,638 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:07:22,639 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:07:22,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 16:07:22,639 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:07:22,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:07:22,640 INFO L82 PathProgramCache]: Analyzing trace with hash 2014113239, now seen corresponding path program 1 times [2021-01-06 16:07:22,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:07:22,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652236695] [2021-01-06 16:07:22,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:07:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:07:22,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 16:07:22,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652236695] [2021-01-06 16:07:22,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:07:22,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 16:07:22,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631041755] [2021-01-06 16:07:22,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 16:07:22,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:07:22,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 16:07:22,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:07:22,740 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand 5 states. [2021-01-06 16:07:22,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:07:22,930 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2021-01-06 16:07:22,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 16:07:22,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2021-01-06 16:07:22,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:07:22,932 INFO L225 Difference]: With dead ends: 94 [2021-01-06 16:07:22,932 INFO L226 Difference]: Without dead ends: 92 [2021-01-06 16:07:22,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 16:07:22,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-01-06 16:07:22,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-01-06 16:07:22,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-01-06 16:07:22,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2021-01-06 16:07:22,942 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 20 [2021-01-06 16:07:22,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:07:22,942 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2021-01-06 16:07:22,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 16:07:22,943 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2021-01-06 16:07:22,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-06 16:07:22,944 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:07:22,944 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:07:22,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 16:07:22,945 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:07:22,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:07:22,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1486605840, now seen corresponding path program 1 times [2021-01-06 16:07:22,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:07:22,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233501285] [2021-01-06 16:07:22,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:07:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:07:23,061 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 16:07:23,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233501285] [2021-01-06 16:07:23,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:07:23,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 16:07:23,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362810153] [2021-01-06 16:07:23,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 16:07:23,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:07:23,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 16:07:23,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 16:07:23,067 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand 7 states. [2021-01-06 16:07:23,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:07:23,379 INFO L93 Difference]: Finished difference Result 210 states and 230 transitions. [2021-01-06 16:07:23,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 16:07:23,379 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2021-01-06 16:07:23,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:07:23,381 INFO L225 Difference]: With dead ends: 210 [2021-01-06 16:07:23,381 INFO L226 Difference]: Without dead ends: 208 [2021-01-06 16:07:23,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-01-06 16:07:23,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-01-06 16:07:23,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 98. [2021-01-06 16:07:23,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2021-01-06 16:07:23,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2021-01-06 16:07:23,408 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 23 [2021-01-06 16:07:23,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:07:23,409 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2021-01-06 16:07:23,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 16:07:23,409 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2021-01-06 16:07:23,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-06 16:07:23,414 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:07:23,415 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:07:23,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 16:07:23,417 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:07:23,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:07:23,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1760261746, now seen corresponding path program 1 times [2021-01-06 16:07:23,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:07:23,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405119155] [2021-01-06 16:07:23,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:07:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:07:23,543 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 16:07:23,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405119155] [2021-01-06 16:07:23,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:07:23,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 16:07:23,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040315653] [2021-01-06 16:07:23,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 16:07:23,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:07:23,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 16:07:23,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 16:07:23,546 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 7 states. [2021-01-06 16:07:23,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:07:23,872 INFO L93 Difference]: Finished difference Result 208 states and 228 transitions. [2021-01-06 16:07:23,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 16:07:23,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2021-01-06 16:07:23,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:07:23,874 INFO L225 Difference]: With dead ends: 208 [2021-01-06 16:07:23,875 INFO L226 Difference]: Without dead ends: 206 [2021-01-06 16:07:23,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-01-06 16:07:23,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-01-06 16:07:23,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 104. [2021-01-06 16:07:23,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2021-01-06 16:07:23,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2021-01-06 16:07:23,883 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 23 [2021-01-06 16:07:23,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:07:23,883 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2021-01-06 16:07:23,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 16:07:23,883 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2021-01-06 16:07:23,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 16:07:23,884 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:07:23,884 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:07:23,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 16:07:23,885 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:07:23,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:07:23,885 INFO L82 PathProgramCache]: Analyzing trace with hash -2060804288, now seen corresponding path program 1 times [2021-01-06 16:07:23,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:07:23,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607983703] [2021-01-06 16:07:23,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:07:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:07:23,911 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:07:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:07:23,930 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:07:23,961 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:07:23,961 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:07:23,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 16:07:24,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:07:24 BoogieIcfgContainer [2021-01-06 16:07:24,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:07:24,004 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:07:24,004 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:07:24,004 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:07:24,005 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:07:21" (3/4) ... [2021-01-06 16:07:24,007 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-01-06 16:07:24,074 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/heap-manipulation/merge_sort-1.i-witness.graphml [2021-01-06 16:07:24,074 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:07:24,080 INFO L168 Benchmark]: Toolchain (without parser) took 4539.51 ms. Allocated memory was 153.1 MB in the beginning and 205.5 MB in the end (delta: 52.4 MB). Free memory was 127.0 MB in the beginning and 137.1 MB in the end (delta: -10.1 MB). Peak memory consumption was 43.3 MB. Max. memory is 8.0 GB. [2021-01-06 16:07:24,081 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 153.1 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:07:24,082 INFO L168 Benchmark]: CACSL2BoogieTranslator took 623.36 ms. Allocated memory is still 153.1 MB. Free memory was 126.6 MB in the beginning and 102.8 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:07:24,082 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.67 ms. Allocated memory is still 153.1 MB. Free memory was 102.8 MB in the beginning and 99.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:07:24,086 INFO L168 Benchmark]: Boogie Preprocessor took 58.41 ms. Allocated memory is still 153.1 MB. Free memory was 99.7 MB in the beginning and 97.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:07:24,086 INFO L168 Benchmark]: RCFGBuilder took 1037.96 ms. Allocated memory is still 153.1 MB. Free memory was 97.2 MB in the beginning and 109.6 MB in the end (delta: -12.4 MB). Peak memory consumption was 26.7 MB. Max. memory is 8.0 GB. [2021-01-06 16:07:24,089 INFO L168 Benchmark]: TraceAbstraction took 2663.94 ms. Allocated memory was 153.1 MB in the beginning and 205.5 MB in the end (delta: 52.4 MB). Free memory was 109.6 MB in the beginning and 140.2 MB in the end (delta: -30.7 MB). Peak memory consumption was 22.8 MB. Max. memory is 8.0 GB. [2021-01-06 16:07:24,089 INFO L168 Benchmark]: Witness Printer took 70.18 ms. Allocated memory is still 205.5 MB. Free memory was 139.7 MB in the beginning and 137.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:07:24,097 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 153.1 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 623.36 ms. Allocated memory is still 153.1 MB. Free memory was 126.6 MB in the beginning and 102.8 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 72.67 ms. Allocated memory is still 153.1 MB. Free memory was 102.8 MB in the beginning and 99.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.41 ms. Allocated memory is still 153.1 MB. Free memory was 99.7 MB in the beginning and 97.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1037.96 ms. Allocated memory is still 153.1 MB. Free memory was 97.2 MB in the beginning and 109.6 MB in the end (delta: -12.4 MB). Peak memory consumption was 26.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2663.94 ms. Allocated memory was 153.1 MB in the beginning and 205.5 MB in the end (delta: 52.4 MB). Free memory was 109.6 MB in the beginning and 140.2 MB in the end (delta: -30.7 MB). Peak memory consumption was 22.8 MB. Max. memory is 8.0 GB. * Witness Printer took 70.18 ms. Allocated memory is still 205.5 MB. Free memory was 139.7 MB in the beginning and 137.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 565]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L638] struct list *data = ((void *)0); [L639] COND TRUE __VERIFIER_nondet_int() [L640] struct node *node = malloc(sizeof *node); [L641] COND FALSE !(!node) [L643] node->next = node [L644] node->value = __VERIFIER_nondet_int() [L645] struct list *item = malloc(sizeof *item); [L646] COND FALSE !(!item) [L648] item->slist = node [L649] item->next = data [L650] data = item [L639] COND FALSE !(__VERIFIER_nondet_int()) [L652] COND FALSE !(!data) [L615] COND FALSE !(!(shape)) [L616] shape->next [L616] COND FALSE !(shape->next) [L622] COND FALSE !(!(shape)) [L623] EXPR shape->next [L623] COND FALSE !(!(shape->next == ((void *)0))) [L624] EXPR shape->slist [L624] COND FALSE !(!(shape->slist)) [L625] EXPR shape->slist [L625] EXPR shape->slist->next [L625] COND TRUE !(shape->slist->next == ((void *)0)) [L565] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 99 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 606 SDtfs, 1778 SDslu, 983 SDs, 0 SdLazy, 504 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 396 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 9955 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 10/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...