/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_2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 17:07:37,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 17:07:37,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 17:07:37,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 17:07:37,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 17:07:37,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 17:07:37,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 17:07:37,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 17:07:37,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 17:07:37,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 17:07:37,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 17:07:37,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 17:07:37,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 17:07:37,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 17:07:37,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 17:07:37,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 17:07:37,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 17:07:37,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 17:07:37,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 17:07:37,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 17:07:37,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 17:07:37,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 17:07:37,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 17:07:37,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 17:07:37,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 17:07:37,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 17:07:37,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 17:07:37,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 17:07:37,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 17:07:37,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 17:07:37,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 17:07:37,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 17:07:37,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 17:07:37,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 17:07:37,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 17:07:37,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 17:07:37,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 17:07:37,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 17:07:37,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 17:07:37,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 17:07:37,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 17:07:37,826 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 17:07:37,858 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 17:07:37,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 17:07:37,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 17:07:37,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 17:07:37,861 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 17:07:37,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 17:07:37,862 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 17:07:37,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 17:07:37,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 17:07:37,864 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 17:07:37,864 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 17:07:37,864 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 17:07:37,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 17:07:37,864 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 17:07:37,864 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 17:07:37,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 17:07:37,866 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 17:07:37,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 17:07:37,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:07:37,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 17:07:37,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 17:07:37,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 17:07:37,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 17:07:37,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 17:07:37,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 17:07:38,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 17:07:38,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 17:07:38,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 17:07:38,313 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 17:07:38,313 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 17:07:38,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/list-ext_2.i [2020-12-23 17:07:38,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e45579c4a/ab19bc0bd5e24ef39e01545aef81bd54/FLAG851bbcb0b [2020-12-23 17:07:39,160 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 17:07:39,161 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext_2.i [2020-12-23 17:07:39,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e45579c4a/ab19bc0bd5e24ef39e01545aef81bd54/FLAG851bbcb0b [2020-12-23 17:07:39,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e45579c4a/ab19bc0bd5e24ef39e01545aef81bd54 [2020-12-23 17:07:39,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 17:07:39,411 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 17:07:39,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 17:07:39,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 17:07:39,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 17:07:39,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:07:39" (1/1) ... [2020-12-23 17:07:39,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@747b85b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:07:39, skipping insertion in model container [2020-12-23 17:07:39,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:07:39" (1/1) ... [2020-12-23 17:07:39,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 17:07:39,494 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,] [2020-12-23 17:07:39,845 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_2.i[23625,23638] 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,] [2020-12-23 17:07:39,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:07:39,873 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,] [2020-12-23 17:07:39,937 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_2.i[23625,23638] 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,] [2020-12-23 17:07:39,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:07:40,002 INFO L208 MainTranslator]: Completed translation [2020-12-23 17:07:40,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:07:40 WrapperNode [2020-12-23 17:07:40,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 17:07:40,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 17:07:40,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 17:07:40,005 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 17:07:40,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:07:40" (1/1) ... [2020-12-23 17:07:40,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:07:40" (1/1) ... [2020-12-23 17:07:40,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 17:07:40,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 17:07:40,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 17:07:40,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 17:07:40,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:07:40" (1/1) ... [2020-12-23 17:07:40,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:07:40" (1/1) ... [2020-12-23 17:07:40,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:07:40" (1/1) ... [2020-12-23 17:07:40,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:07:40" (1/1) ... [2020-12-23 17:07:40,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:07:40" (1/1) ... [2020-12-23 17:07:40,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:07:40" (1/1) ... [2020-12-23 17:07:40,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:07:40" (1/1) ... [2020-12-23 17:07:40,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 17:07:40,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 17:07:40,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 17:07:40,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 17:07:40,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:07:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:07:40,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 17:07:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 17:07:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 17:07:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-23 17:07:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 17:07:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-23 17:07:40,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 17:07:40,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 17:07:40,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 17:07:40,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 17:07:40,889 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 17:07:40,889 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2020-12-23 17:07:40,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:07:40 BoogieIcfgContainer [2020-12-23 17:07:40,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 17:07:40,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 17:07:40,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 17:07:40,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 17:07:40,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:07:39" (1/3) ... [2020-12-23 17:07:40,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edf5a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:07:40, skipping insertion in model container [2020-12-23 17:07:40,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:07:40" (2/3) ... [2020-12-23 17:07:40,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edf5a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:07:40, skipping insertion in model container [2020-12-23 17:07:40,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:07:40" (3/3) ... [2020-12-23 17:07:40,899 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext_2.i [2020-12-23 17:07:40,905 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 17:07:40,910 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-12-23 17:07:40,927 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-12-23 17:07:40,951 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 17:07:40,951 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 17:07:40,951 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 17:07:40,951 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 17:07:40,951 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 17:07:40,952 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 17:07:40,952 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 17:07:40,952 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 17:07:40,970 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states. [2020-12-23 17:07:40,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 17:07:40,976 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:07:40,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:07:40,978 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]=== [2020-12-23 17:07:40,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:07:40,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1807801548, now seen corresponding path program 1 times [2020-12-23 17:07:40,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:07:40,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866784050] [2020-12-23 17:07:40,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:07:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:07:41,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:07:41,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866784050] [2020-12-23 17:07:41,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:07:41,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:07:41,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391890502] [2020-12-23 17:07:41,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 17:07:41,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:07:41,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 17:07:41,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 17:07:41,161 INFO L87 Difference]: Start difference. First operand 91 states. Second operand 2 states. [2020-12-23 17:07:41,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:07:41,180 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-12-23 17:07:41,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 17:07:41,181 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-23 17:07:41,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:07:41,191 INFO L225 Difference]: With dead ends: 91 [2020-12-23 17:07:41,191 INFO L226 Difference]: Without dead ends: 86 [2020-12-23 17:07:41,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 17:07:41,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-12-23 17:07:41,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-12-23 17:07:41,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-23 17:07:41,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2020-12-23 17:07:41,233 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 7 [2020-12-23 17:07:41,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:07:41,234 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2020-12-23 17:07:41,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 17:07:41,234 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2020-12-23 17:07:41,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 17:07:41,235 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:07:41,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:07:41,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 17:07:41,236 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]=== [2020-12-23 17:07:41,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:07:41,237 INFO L82 PathProgramCache]: Analyzing trace with hash 206286314, now seen corresponding path program 1 times [2020-12-23 17:07:41,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:07:41,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911125216] [2020-12-23 17:07:41,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:07:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:07:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:07:41,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911125216] [2020-12-23 17:07:41,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:07:41,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:07:41,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538824266] [2020-12-23 17:07:41,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:07:41,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:07:41,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:07:41,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:07:41,320 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand 4 states. [2020-12-23 17:07:41,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:07:41,504 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2020-12-23 17:07:41,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 17:07:41,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-23 17:07:41,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:07:41,507 INFO L225 Difference]: With dead ends: 107 [2020-12-23 17:07:41,507 INFO L226 Difference]: Without dead ends: 107 [2020-12-23 17:07:41,508 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 [2020-12-23 17:07:41,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-23 17:07:41,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 87. [2020-12-23 17:07:41,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-23 17:07:41,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2020-12-23 17:07:41,519 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 8 [2020-12-23 17:07:41,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:07:41,519 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2020-12-23 17:07:41,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:07:41,520 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2020-12-23 17:07:41,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 17:07:41,520 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:07:41,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:07:41,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 17:07:41,521 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]=== [2020-12-23 17:07:41,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:07:41,522 INFO L82 PathProgramCache]: Analyzing trace with hash 206286315, now seen corresponding path program 1 times [2020-12-23 17:07:41,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:07:41,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468279527] [2020-12-23 17:07:41,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:07:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:07:41,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:07:41,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468279527] [2020-12-23 17:07:41,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:07:41,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:07:41,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204465190] [2020-12-23 17:07:41,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:07:41,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:07:41,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:07:41,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:07:41,597 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand 4 states. [2020-12-23 17:07:41,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:07:41,827 INFO L93 Difference]: Finished difference Result 124 states and 137 transitions. [2020-12-23 17:07:41,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 17:07:41,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-23 17:07:41,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:07:41,830 INFO L225 Difference]: With dead ends: 124 [2020-12-23 17:07:41,830 INFO L226 Difference]: Without dead ends: 124 [2020-12-23 17:07:41,830 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 [2020-12-23 17:07:41,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-23 17:07:41,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 107. [2020-12-23 17:07:41,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-23 17:07:41,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2020-12-23 17:07:41,841 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 8 [2020-12-23 17:07:41,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:07:41,842 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2020-12-23 17:07:41,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:07:41,842 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2020-12-23 17:07:41,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 17:07:41,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:07:41,843 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:07:41,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 17:07:41,844 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]=== [2020-12-23 17:07:41,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:07:41,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1364928161, now seen corresponding path program 1 times [2020-12-23 17:07:41,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:07:41,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376585866] [2020-12-23 17:07:41,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:07:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:07:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:07:41,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376585866] [2020-12-23 17:07:41,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:07:41,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 17:07:41,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809688819] [2020-12-23 17:07:41,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:07:41,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:07:41,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:07:41,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:07:41,935 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand 6 states. [2020-12-23 17:07:42,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:07:42,249 INFO L93 Difference]: Finished difference Result 152 states and 172 transitions. [2020-12-23 17:07:42,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:07:42,250 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-23 17:07:42,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:07:42,251 INFO L225 Difference]: With dead ends: 152 [2020-12-23 17:07:42,251 INFO L226 Difference]: Without dead ends: 152 [2020-12-23 17:07:42,252 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 [2020-12-23 17:07:42,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-12-23 17:07:42,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 111. [2020-12-23 17:07:42,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-23 17:07:42,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 129 transitions. [2020-12-23 17:07:42,262 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 129 transitions. Word has length 17 [2020-12-23 17:07:42,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:07:42,262 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 129 transitions. [2020-12-23 17:07:42,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:07:42,262 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 129 transitions. [2020-12-23 17:07:42,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 17:07:42,263 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:07:42,263 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:07:42,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 17:07:42,264 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]=== [2020-12-23 17:07:42,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:07:42,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1364928160, now seen corresponding path program 1 times [2020-12-23 17:07:42,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:07:42,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422068840] [2020-12-23 17:07:42,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:07:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:07:42,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:07:42,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422068840] [2020-12-23 17:07:42,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:07:42,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 17:07:42,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118803260] [2020-12-23 17:07:42,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:07:42,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:07:42,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:07:42,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:07:42,363 INFO L87 Difference]: Start difference. First operand 111 states and 129 transitions. Second operand 6 states. [2020-12-23 17:07:42,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:07:42,720 INFO L93 Difference]: Finished difference Result 155 states and 176 transitions. [2020-12-23 17:07:42,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 17:07:42,721 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-23 17:07:42,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:07:42,723 INFO L225 Difference]: With dead ends: 155 [2020-12-23 17:07:42,723 INFO L226 Difference]: Without dead ends: 155 [2020-12-23 17:07:42,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:07:42,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-12-23 17:07:42,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 95. [2020-12-23 17:07:42,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-23 17:07:42,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2020-12-23 17:07:42,741 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 17 [2020-12-23 17:07:42,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:07:42,741 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2020-12-23 17:07:42,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:07:42,742 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2020-12-23 17:07:42,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 17:07:42,743 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:07:42,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:07:42,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 17:07:42,746 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]=== [2020-12-23 17:07:42,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:07:42,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1479745928, now seen corresponding path program 1 times [2020-12-23 17:07:42,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:07:42,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124229200] [2020-12-23 17:07:42,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:07:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:07:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:07:42,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124229200] [2020-12-23 17:07:42,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:07:42,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 17:07:42,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688057220] [2020-12-23 17:07:42,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 17:07:42,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:07:42,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 17:07:42,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:07:42,899 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand 7 states. [2020-12-23 17:07:43,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:07:43,114 INFO L93 Difference]: Finished difference Result 187 states and 204 transitions. [2020-12-23 17:07:43,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:07:43,115 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-23 17:07:43,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:07:43,116 INFO L225 Difference]: With dead ends: 187 [2020-12-23 17:07:43,116 INFO L226 Difference]: Without dead ends: 187 [2020-12-23 17:07:43,116 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 [2020-12-23 17:07:43,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-12-23 17:07:43,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 106. [2020-12-23 17:07:43,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-23 17:07:43,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2020-12-23 17:07:43,122 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 18 [2020-12-23 17:07:43,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:07:43,123 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2020-12-23 17:07:43,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 17:07:43,123 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2020-12-23 17:07:43,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 17:07:43,124 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:07:43,124 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] [2020-12-23 17:07:43,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 17:07:43,125 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]=== [2020-12-23 17:07:43,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:07:43,125 INFO L82 PathProgramCache]: Analyzing trace with hash 354031242, now seen corresponding path program 1 times [2020-12-23 17:07:43,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:07:43,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208237996] [2020-12-23 17:07:43,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:07:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 17:07:43,148 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 17:07:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 17:07:43,168 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 17:07:43,195 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 17:07:43,195 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 17:07:43,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 17:07:43,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 05:07:43 BoogieIcfgContainer [2020-12-23 17:07:43,232 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 17:07:43,233 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 17:07:43,233 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 17:07:43,233 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 17:07:43,233 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:07:40" (3/4) ... [2020-12-23 17:07:43,238 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 17:07:43,238 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 17:07:43,240 INFO L168 Benchmark]: Toolchain (without parser) took 3828.32 ms. Allocated memory was 173.0 MB in the beginning and 207.6 MB in the end (delta: 34.6 MB). Free memory was 146.9 MB in the beginning and 127.3 MB in the end (delta: 19.6 MB). Peak memory consumption was 55.2 MB. Max. memory is 8.0 GB. [2020-12-23 17:07:43,241 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 173.0 MB. Free memory is still 143.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 17:07:43,242 INFO L168 Benchmark]: CACSL2BoogieTranslator took 590.74 ms. Allocated memory is still 173.0 MB. Free memory was 146.6 MB in the beginning and 124.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-23 17:07:43,243 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.89 ms. Allocated memory is still 173.0 MB. Free memory was 124.0 MB in the beginning and 121.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:07:43,244 INFO L168 Benchmark]: Boogie Preprocessor took 40.28 ms. Allocated memory is still 173.0 MB. Free memory was 121.9 MB in the beginning and 120.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:07:43,244 INFO L168 Benchmark]: RCFGBuilder took 755.16 ms. Allocated memory is still 173.0 MB. Free memory was 120.2 MB in the beginning and 124.8 MB in the end (delta: -4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-23 17:07:43,245 INFO L168 Benchmark]: TraceAbstraction took 2339.34 ms. Allocated memory was 173.0 MB in the beginning and 207.6 MB in the end (delta: 34.6 MB). Free memory was 124.3 MB in the beginning and 127.3 MB in the end (delta: -3.0 MB). Peak memory consumption was 31.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:07:43,246 INFO L168 Benchmark]: Witness Printer took 5.45 ms. Allocated memory is still 207.6 MB. Free memory is still 127.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 17:07:43,250 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 173.0 MB. Free memory is still 143.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 590.74 ms. Allocated memory is still 173.0 MB. Free memory was 146.6 MB in the beginning and 124.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 88.89 ms. Allocated memory is still 173.0 MB. Free memory was 124.0 MB in the beginning and 121.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.28 ms. Allocated memory is still 173.0 MB. Free memory was 121.9 MB in the beginning and 120.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 755.16 ms. Allocated memory is still 173.0 MB. Free memory was 120.2 MB in the beginning and 124.8 MB in the end (delta: -4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2339.34 ms. Allocated memory was 173.0 MB in the beginning and 207.6 MB in the end (delta: 34.6 MB). Free memory was 124.3 MB in the beginning and 127.3 MB in the end (delta: -3.0 MB). Peak memory consumption was 31.1 MB. Max. memory is 8.0 GB. * Witness Printer took 5.45 ms. Allocated memory is still 207.6 MB. Free memory is still 127.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 569]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 569. Possible FailurePath: [L533] int i = 0; [L534] int y = 0; [L535] List a = (List) malloc(sizeof(struct node)); [L536] COND FALSE !(a == 0) [L537] List t; [L538] List p = a; [L539] i < 10 && __VERIFIER_nondet_int() [L539] i < 10 && __VERIFIER_nondet_int() [L539] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L547] y < 10 && __VERIFIER_nondet_int() [L547] y < 10 && __VERIFIER_nondet_int() [L547] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L555] p->h = 3 [L556] p->n = (void*)__VERIFIER_nondet_ulong() [L557] i = 0 [L558] y = 0 [L559] p = a [L560] EXPR p->h [L560] COND FALSE !(p->h == 1) [L564] EXPR p->h [L564] COND FALSE !(p->h == 2) [L568] EXPR p->h [L568] COND TRUE p->h != 3 || (i + y) < 20 [L569] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 91 locations, 38 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 1.3s, 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, 0.8s 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 219 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s 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...