/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-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/list-ext-properties/list-ext.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:18:46,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:18:46,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:18:46,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:18:46,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:18:46,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:18:46,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:18:46,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:18:46,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:18:46,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:18:46,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:18:46,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:18:46,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:18:46,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:18:46,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:18:46,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:18:46,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:18:46,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:18:46,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:18:46,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:18:46,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:18:46,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:18:46,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:18:46,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:18:46,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-07 05:18:46,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-07 05:18:46,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-07 05:18:46,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-07 05:18:46,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-07 05:18:46,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-07 05:18:46,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:18:46,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:18:46,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:18:46,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:18:46,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:18:46,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:18:46,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:18:46,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:18:46,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:18:46,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:18:46,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:18:47,000 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-01-07 05:18:47,053 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:18:47,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:18:47,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:18:47,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:18:47,059 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:18:47,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:18:47,060 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:18:47,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:18:47,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:18:47,060 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:18:47,061 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:18:47,062 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:18:47,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:18:47,062 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:18:47,062 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:18:47,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:18:47,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:18:47,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:18:47,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:18:47,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:18:47,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:18:47,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:18:47,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:18:47,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:18:47,065 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:18:47,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:18:47,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:18:47,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:18:47,540 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:18:47,541 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:18:47,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/list-ext.i [2021-01-07 05:18:47,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/927c63fd2/050c023e57b64d2ba7e1d159a82dfd78/FLAG785c9837c [2021-01-07 05:18:48,453 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:18:48,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext.i [2021-01-07 05:18:48,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/927c63fd2/050c023e57b64d2ba7e1d159a82dfd78/FLAG785c9837c [2021-01-07 05:18:48,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/927c63fd2/050c023e57b64d2ba7e1d159a82dfd78 [2021-01-07 05:18:48,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:18:48,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:18:48,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:18:48,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:18:48,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:18:48,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:18:48" (1/1) ... [2021-01-07 05:18:48,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36f39b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:48, skipping insertion in model container [2021-01-07 05:18:48,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:18:48" (1/1) ... [2021-01-07 05:18:48,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:18:48,802 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~p~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~p~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~p~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] [2021-01-07 05:18:49,267 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/list-ext-properties/list-ext.i[23551,23564] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] [2021-01-07 05:18:49,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:18:49,299 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~p~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~p~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~p~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] [2021-01-07 05:18:49,345 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/list-ext-properties/list-ext.i[23551,23564] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] [2021-01-07 05:18:49,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:18:49,409 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:18:49,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:49 WrapperNode [2021-01-07 05:18:49,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:18:49,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:18:49,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:18:49,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:18:49,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:49" (1/1) ... [2021-01-07 05:18:49,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:49" (1/1) ... [2021-01-07 05:18:49,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:18:49,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:18:49,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:18:49,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:18:49,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:49" (1/1) ... [2021-01-07 05:18:49,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:49" (1/1) ... [2021-01-07 05:18:49,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:49" (1/1) ... [2021-01-07 05:18:49,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:49" (1/1) ... [2021-01-07 05:18:49,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:49" (1/1) ... [2021-01-07 05:18:49,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:49" (1/1) ... [2021-01-07 05:18:49,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:49" (1/1) ... [2021-01-07 05:18:49,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:18:49,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:18:49,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:18:49,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:18:49,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:49" (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 [2021-01-07 05:18:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:18:49,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:18:49,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-01-07 05:18:49,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-01-07 05:18:49,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:18:49,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-01-07 05:18:49,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:18:49,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-07 05:18:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:18:49,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:18:50,304 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:18:50,305 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-01-07 05:18:50,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:18:50 BoogieIcfgContainer [2021-01-07 05:18:50,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:18:50,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:18:50,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:18:50,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:18:50,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:18:48" (1/3) ... [2021-01-07 05:18:50,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfa768a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:18:50, skipping insertion in model container [2021-01-07 05:18:50,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:18:49" (2/3) ... [2021-01-07 05:18:50,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfa768a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:18:50, skipping insertion in model container [2021-01-07 05:18:50,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:18:50" (3/3) ... [2021-01-07 05:18:50,316 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2021-01-07 05:18:50,322 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:18:50,328 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2021-01-07 05:18:50,349 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-01-07 05:18:50,373 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:18:50,374 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:18:50,374 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:18:50,374 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:18:50,374 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:18:50,374 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:18:50,374 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:18:50,375 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:18:50,395 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states. [2021-01-07 05:18:50,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:18:50,401 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:50,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:50,403 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:18:50,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:50,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1807801548, now seen corresponding path program 1 times [2021-01-07 05:18:50,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:50,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400222874] [2021-01-07 05:18:50,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:50,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:50,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400222874] [2021-01-07 05:18:50,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:18:50,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:18:50,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076978760] [2021-01-07 05:18:50,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-07 05:18:50,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:50,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-07 05:18:50,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-07 05:18:50,642 INFO L87 Difference]: Start difference. First operand 91 states. Second operand 2 states. [2021-01-07 05:18:50,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:50,673 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2021-01-07 05:18:50,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-07 05:18:50,675 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-01-07 05:18:50,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:50,689 INFO L225 Difference]: With dead ends: 91 [2021-01-07 05:18:50,689 INFO L226 Difference]: Without dead ends: 86 [2021-01-07 05:18:50,693 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 [2021-01-07 05:18:50,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-01-07 05:18:50,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-01-07 05:18:50,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-01-07 05:18:50,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2021-01-07 05:18:50,750 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 7 [2021-01-07 05:18:50,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:50,751 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2021-01-07 05:18:50,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-07 05:18:50,751 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2021-01-07 05:18:50,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:18:50,752 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:50,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:50,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:18:50,753 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:18:50,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:50,754 INFO L82 PathProgramCache]: Analyzing trace with hash 206286314, now seen corresponding path program 1 times [2021-01-07 05:18:50,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:50,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384215453] [2021-01-07 05:18:50,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:50,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:50,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384215453] [2021-01-07 05:18:50,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:18:50,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:18:50,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820778655] [2021-01-07 05:18:50,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:18:50,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:50,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:18:50,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:18:50,848 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand 4 states. [2021-01-07 05:18:51,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:51,164 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2021-01-07 05:18:51,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:18:51,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-01-07 05:18:51,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:51,167 INFO L225 Difference]: With dead ends: 107 [2021-01-07 05:18:51,167 INFO L226 Difference]: Without dead ends: 107 [2021-01-07 05:18:51,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:18:51,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-01-07 05:18:51,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 87. [2021-01-07 05:18:51,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-01-07 05:18:51,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2021-01-07 05:18:51,179 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 8 [2021-01-07 05:18:51,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:51,180 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2021-01-07 05:18:51,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:18:51,180 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2021-01-07 05:18:51,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:18:51,181 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:51,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:51,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:18:51,182 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:18:51,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:51,182 INFO L82 PathProgramCache]: Analyzing trace with hash 206286315, now seen corresponding path program 1 times [2021-01-07 05:18:51,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:51,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912677431] [2021-01-07 05:18:51,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:51,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:51,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912677431] [2021-01-07 05:18:51,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:18:51,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:18:51,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543012774] [2021-01-07 05:18:51,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:18:51,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:51,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:18:51,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:18:51,321 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand 4 states. [2021-01-07 05:18:51,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:51,554 INFO L93 Difference]: Finished difference Result 124 states and 137 transitions. [2021-01-07 05:18:51,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:18:51,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-01-07 05:18:51,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:51,557 INFO L225 Difference]: With dead ends: 124 [2021-01-07 05:18:51,557 INFO L226 Difference]: Without dead ends: 124 [2021-01-07 05:18:51,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:18:51,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-01-07 05:18:51,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 107. [2021-01-07 05:18:51,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2021-01-07 05:18:51,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2021-01-07 05:18:51,568 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 8 [2021-01-07 05:18:51,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:51,568 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2021-01-07 05:18:51,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:18:51,569 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2021-01-07 05:18:51,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-07 05:18:51,570 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:51,570 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:51,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-07 05:18:51,572 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:18:51,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:51,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1364928161, now seen corresponding path program 1 times [2021-01-07 05:18:51,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:51,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55944065] [2021-01-07 05:18:51,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:51,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:51,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55944065] [2021-01-07 05:18:51,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:18:51,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:18:51,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107899382] [2021-01-07 05:18:51,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:18:51,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:51,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:18:51,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:18:51,727 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand 6 states. [2021-01-07 05:18:52,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:52,028 INFO L93 Difference]: Finished difference Result 152 states and 172 transitions. [2021-01-07 05:18:52,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:18:52,029 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2021-01-07 05:18:52,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:52,033 INFO L225 Difference]: With dead ends: 152 [2021-01-07 05:18:52,033 INFO L226 Difference]: Without dead ends: 152 [2021-01-07 05:18:52,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:18:52,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-01-07 05:18:52,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 111. [2021-01-07 05:18:52,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2021-01-07 05:18:52,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 129 transitions. [2021-01-07 05:18:52,060 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 129 transitions. Word has length 17 [2021-01-07 05:18:52,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:52,061 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 129 transitions. [2021-01-07 05:18:52,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:18:52,061 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 129 transitions. [2021-01-07 05:18:52,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-07 05:18:52,062 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:52,063 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:52,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-07 05:18:52,064 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:18:52,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:52,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1364928160, now seen corresponding path program 1 times [2021-01-07 05:18:52,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:52,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605501258] [2021-01-07 05:18:52,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:52,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:52,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605501258] [2021-01-07 05:18:52,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:18:52,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:18:52,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073316713] [2021-01-07 05:18:52,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:18:52,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:52,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:18:52,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:18:52,165 INFO L87 Difference]: Start difference. First operand 111 states and 129 transitions. Second operand 6 states. [2021-01-07 05:18:52,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:52,577 INFO L93 Difference]: Finished difference Result 155 states and 176 transitions. [2021-01-07 05:18:52,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:18:52,578 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2021-01-07 05:18:52,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:52,580 INFO L225 Difference]: With dead ends: 155 [2021-01-07 05:18:52,580 INFO L226 Difference]: Without dead ends: 155 [2021-01-07 05:18:52,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:18:52,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-01-07 05:18:52,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 95. [2021-01-07 05:18:52,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2021-01-07 05:18:52,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2021-01-07 05:18:52,596 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 17 [2021-01-07 05:18:52,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:52,596 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2021-01-07 05:18:52,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:18:52,596 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2021-01-07 05:18:52,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-07 05:18:52,598 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:52,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:52,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-07 05:18:52,600 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:18:52,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:52,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1479745928, now seen corresponding path program 1 times [2021-01-07 05:18:52,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:52,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833419353] [2021-01-07 05:18:52,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:18:52,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:18:52,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833419353] [2021-01-07 05:18:52,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:18:52,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-07 05:18:52,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015321023] [2021-01-07 05:18:52,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:18:52,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:18:52,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:18:52,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:18:52,727 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand 7 states. [2021-01-07 05:18:52,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:18:52,934 INFO L93 Difference]: Finished difference Result 187 states and 204 transitions. [2021-01-07 05:18:52,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:18:52,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2021-01-07 05:18:52,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:18:52,936 INFO L225 Difference]: With dead ends: 187 [2021-01-07 05:18:52,936 INFO L226 Difference]: Without dead ends: 187 [2021-01-07 05:18:52,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:18:52,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-01-07 05:18:52,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 106. [2021-01-07 05:18:52,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-01-07 05:18:52,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2021-01-07 05:18:52,941 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 18 [2021-01-07 05:18:52,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:18:52,942 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2021-01-07 05:18:52,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:18:52,942 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2021-01-07 05:18:52,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-07 05:18:52,943 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:18:52,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:18:52,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-07 05:18:52,944 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:18:52,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:18:52,944 INFO L82 PathProgramCache]: Analyzing trace with hash 354031242, now seen corresponding path program 1 times [2021-01-07 05:18:52,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:18:52,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517545713] [2021-01-07 05:18:52,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:18:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-07 05:18:52,960 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-07 05:18:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-07 05:18:52,975 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-07 05:18:53,006 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-07 05:18:53,006 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-07 05:18:53,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-07 05:18:53,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.01 05:18:53 BoogieIcfgContainer [2021-01-07 05:18:53,064 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-07 05:18:53,065 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-07 05:18:53,065 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-07 05:18:53,065 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-07 05:18:53,066 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:18:50" (3/4) ... [2021-01-07 05:18:53,069 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-07 05:18:53,070 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-07 05:18:53,072 INFO L168 Benchmark]: Toolchain (without parser) took 4371.60 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 124.5 MB in the beginning and 74.5 MB in the end (delta: 50.0 MB). Peak memory consumption was 80.6 MB. Max. memory is 8.0 GB. [2021-01-07 05:18:53,072 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:18:53,073 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.44 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 101.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:18:53,074 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.46 ms. Allocated memory is still 151.0 MB. Free memory was 101.8 MB in the beginning and 99.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:18:53,075 INFO L168 Benchmark]: Boogie Preprocessor took 66.88 ms. Allocated memory is still 151.0 MB. Free memory was 99.6 MB in the beginning and 98.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:18:53,076 INFO L168 Benchmark]: RCFGBuilder took 748.37 ms. Allocated memory is still 151.0 MB. Free memory was 98.0 MB in the beginning and 101.9 MB in the end (delta: -3.9 MB). Peak memory consumption was 3.3 MB. Max. memory is 8.0 GB. [2021-01-07 05:18:53,077 INFO L168 Benchmark]: TraceAbstraction took 2755.86 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 101.4 MB in the beginning and 75.0 MB in the end (delta: 26.4 MB). Peak memory consumption was 58.4 MB. Max. memory is 8.0 GB. [2021-01-07 05:18:53,077 INFO L168 Benchmark]: Witness Printer took 4.65 ms. Allocated memory is still 181.4 MB. Free memory was 75.0 MB in the beginning and 74.5 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:18:53,082 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 705.44 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 101.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 67.46 ms. Allocated memory is still 151.0 MB. Free memory was 101.8 MB in the beginning and 99.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 66.88 ms. Allocated memory is still 151.0 MB. Free memory was 99.6 MB in the beginning and 98.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 748.37 ms. Allocated memory is still 151.0 MB. Free memory was 98.0 MB in the beginning and 101.9 MB in the end (delta: -3.9 MB). Peak memory consumption was 3.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2755.86 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 101.4 MB in the beginning and 75.0 MB in the end (delta: 26.4 MB). Peak memory consumption was 58.4 MB. Max. memory is 8.0 GB. * Witness Printer took 4.65 ms. Allocated memory is still 181.4 MB. Free memory was 75.0 MB in the beginning and 74.5 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); [L535] COND FALSE !(a == 0) [L536] List t; [L537] List p = a; [L538] i < 10 && __VERIFIER_nondet_int() [L538] i < 10 && __VERIFIER_nondet_int() [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] y < 10 && __VERIFIER_nondet_int() [L546] y < 10 && __VERIFIER_nondet_int() [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 [L555] p->n = 0 [L556] i = 0 [L557] y = 0 [L558] p = a [L559] EXPR p->h [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h [L567] COND TRUE p->h != 3 || (i + y) < 20 [L568] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 91 locations, 38 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 403 SDtfs, 639 SDslu, 587 SDs, 0 SdLazy, 972 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=4, 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, 6 MinimizatonAttempts, 219 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 4436 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 9/9 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...