./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash adee0aad8018029b1a093d0ddfc0de44abfd0e03 ......................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 18:02:06,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 18:02:06,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 18:02:06,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 18:02:06,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 18:02:06,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 18:02:06,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 18:02:06,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 18:02:06,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 18:02:06,199 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 18:02:06,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 18:02:06,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 18:02:06,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 18:02:06,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 18:02:06,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 18:02:06,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 18:02:06,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 18:02:06,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 18:02:06,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 18:02:06,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 18:02:06,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 18:02:06,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 18:02:06,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 18:02:06,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 18:02:06,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 18:02:06,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 18:02:06,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 18:02:06,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 18:02:06,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 18:02:06,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 18:02:06,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 18:02:06,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 18:02:06,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 18:02:06,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 18:02:06,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 18:02:06,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 18:02:06,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 18:02:06,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 18:02:06,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 18:02:06,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 18:02:06,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 18:02:06,234 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 18:02:06,251 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 18:02:06,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 18:02:06,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 18:02:06,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 18:02:06,253 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 18:02:06,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 18:02:06,254 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 18:02:06,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 18:02:06,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 18:02:06,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 18:02:06,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 18:02:06,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 18:02:06,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 18:02:06,256 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 18:02:06,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 18:02:06,256 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 18:02:06,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 18:02:06,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 18:02:06,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 18:02:06,257 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 18:02:06,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 18:02:06,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 18:02:06,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 18:02:06,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 18:02:06,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 18:02:06,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 18:02:06,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 18:02:06,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 18:02:06,260 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 18:02:06,260 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adee0aad8018029b1a093d0ddfc0de44abfd0e03 [2020-07-28 18:02:06,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 18:02:06,580 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 18:02:06,584 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 18:02:06,586 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 18:02:06,587 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 18:02:06,589 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i [2020-07-28 18:02:06,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac42a86d4/484b668fa3c6472fa643a032980080b7/FLAG56dfc8c3c [2020-07-28 18:02:07,200 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 18:02:07,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i [2020-07-28 18:02:07,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac42a86d4/484b668fa3c6472fa643a032980080b7/FLAG56dfc8c3c [2020-07-28 18:02:07,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac42a86d4/484b668fa3c6472fa643a032980080b7 [2020-07-28 18:02:07,490 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 18:02:07,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 18:02:07,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 18:02:07,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 18:02:07,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 18:02:07,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:02:07" (1/1) ... [2020-07-28 18:02:07,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f0cd91a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:02:07, skipping insertion in model container [2020-07-28 18:02:07,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:02:07" (1/1) ... [2020-07-28 18:02:07,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 18:02:07,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 18:02:07,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:02:07,976 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 18:02:08,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:02:08,077 INFO L208 MainTranslator]: Completed translation [2020-07-28 18:02:08,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:02:08 WrapperNode [2020-07-28 18:02:08,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 18:02:08,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 18:02:08,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 18:02:08,079 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 18:02:08,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:02:08" (1/1) ... [2020-07-28 18:02:08,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:02:08" (1/1) ... [2020-07-28 18:02:08,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 18:02:08,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 18:02:08,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 18:02:08,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 18:02:08,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:02:08" (1/1) ... [2020-07-28 18:02:08,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:02:08" (1/1) ... [2020-07-28 18:02:08,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:02:08" (1/1) ... [2020-07-28 18:02:08,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:02:08" (1/1) ... [2020-07-28 18:02:08,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:02:08" (1/1) ... [2020-07-28 18:02:08,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:02:08" (1/1) ... [2020-07-28 18:02:08,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:02:08" (1/1) ... [2020-07-28 18:02:08,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 18:02:08,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 18:02:08,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 18:02:08,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 18:02:08,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:02:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-28 18:02:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 18:02:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 18:02:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-28 18:02:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-28 18:02:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-28 18:02:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 18:02:08,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 18:02:08,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 18:02:08,844 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 18:02:08,846 INFO L295 CfgBuilder]: Removed 12 assume(true) statements. [2020-07-28 18:02:08,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:02:08 BoogieIcfgContainer [2020-07-28 18:02:08,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 18:02:08,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 18:02:08,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 18:02:08,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 18:02:08,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 06:02:07" (1/3) ... [2020-07-28 18:02:08,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aab35c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:02:08, skipping insertion in model container [2020-07-28 18:02:08,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:02:08" (2/3) ... [2020-07-28 18:02:08,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aab35c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:02:08, skipping insertion in model container [2020-07-28 18:02:08,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:02:08" (3/3) ... [2020-07-28 18:02:08,864 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-simple-white-blue-2.i [2020-07-28 18:02:08,875 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 18:02:08,883 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 18:02:08,896 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 18:02:08,920 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 18:02:08,920 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 18:02:08,921 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 18:02:08,921 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 18:02:08,922 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 18:02:08,922 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 18:02:08,922 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 18:02:08,922 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 18:02:08,937 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-07-28 18:02:08,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-28 18:02:08,944 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 18:02:08,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 18:02:08,945 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 18:02:08,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 18:02:08,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1041580535, now seen corresponding path program 1 times [2020-07-28 18:02:08,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 18:02:08,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011030964] [2020-07-28 18:02:08,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 18:02:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:02:09,132 INFO L280 TraceCheckUtils]: 0: Hoare triple {29#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {29#true} is VALID [2020-07-28 18:02:09,133 INFO L280 TraceCheckUtils]: 1: Hoare triple {29#true} havoc main_#res;havoc main_#t~malloc0.base, main_#t~malloc0.offset, main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~mem3.base, main_#t~mem3.offset, main_#t~nondet1, main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet6, main_#t~mem7.base, main_#t~mem7.offset, main_#t~mem8.base, main_#t~mem8.offset, main_#t~mem9.base, main_#t~mem9.offset, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~mem11.base, main_#t~mem11.offset, main_#t~mem12.base, main_#t~mem12.offset, main_~y~0.base, main_~y~0.offset, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem13, main_#t~mem15.base, main_#t~mem15.offset, main_#t~mem16, main_#t~mem17.base, main_#t~mem17.offset, main_#t~mem18.base, main_#t~mem18.offset, main_~head~0.base, main_~head~0.offset, main_~x~0.base, main_~x~0.offset;call main_#t~malloc0.base, main_#t~malloc0.offset := #Ultimate.allocOnHeap(8);main_~head~0.base, main_~head~0.offset := main_#t~malloc0.base, main_#t~malloc0.offset;call write~$Pointer$(0, 0, main_~head~0.base, main_~head~0.offset, 4);call write~int(0, main_~head~0.base, 4 + main_~head~0.offset, 4);main_~x~0.base, main_~x~0.offset := main_~head~0.base, main_~head~0.offset; {29#true} is VALID [2020-07-28 18:02:09,134 INFO L280 TraceCheckUtils]: 2: Hoare triple {29#true} assume !true; {30#false} is VALID [2020-07-28 18:02:09,134 INFO L280 TraceCheckUtils]: 3: Hoare triple {30#false} assume -2147483648 <= main_#t~nondet4 && main_#t~nondet4 <= 2147483647; {30#false} is VALID [2020-07-28 18:02:09,135 INFO L280 TraceCheckUtils]: 4: Hoare triple {30#false} assume 0 != main_#t~nondet4;havoc main_#t~nondet4;call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnHeap(8);main_~x~0.base, main_~x~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;call write~int(1, main_~x~0.base, 4 + main_~x~0.offset, 4);call write~$Pointer$(main_~head~0.base, main_~head~0.offset, main_~x~0.base, main_~x~0.offset, 4);main_~head~0.base, main_~head~0.offset := main_~x~0.base, main_~x~0.offset; {30#false} is VALID [2020-07-28 18:02:09,135 INFO L280 TraceCheckUtils]: 5: Hoare triple {30#false} main_~x~0.base, main_~x~0.offset := main_~head~0.base, main_~head~0.offset; {30#false} is VALID [2020-07-28 18:02:09,135 INFO L280 TraceCheckUtils]: 6: Hoare triple {30#false} assume !true; {30#false} is VALID [2020-07-28 18:02:09,136 INFO L280 TraceCheckUtils]: 7: Hoare triple {30#false} call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_~x~0.base, main_~x~0.offset, 4);main_~x~0.base, main_~x~0.offset := main_#t~mem15.base, main_#t~mem15.offset;havoc main_#t~mem15.base, main_#t~mem15.offset; {30#false} is VALID [2020-07-28 18:02:09,136 INFO L280 TraceCheckUtils]: 8: Hoare triple {30#false} assume !!(main_~x~0.base != 0 || main_~x~0.offset != 0);call main_#t~mem16 := read~int(main_~x~0.base, 4 + main_~x~0.offset, 4); {30#false} is VALID [2020-07-28 18:02:09,136 INFO L280 TraceCheckUtils]: 9: Hoare triple {30#false} assume 1 != main_#t~mem16;havoc main_#t~mem16; {30#false} is VALID [2020-07-28 18:02:09,137 INFO L280 TraceCheckUtils]: 10: Hoare triple {30#false} assume !false; {30#false} is VALID [2020-07-28 18:02:09,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 18:02:09,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011030964] [2020-07-28 18:02:09,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 18:02:09,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 18:02:09,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527298967] [2020-07-28 18:02:09,147 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-07-28 18:02:09,148 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 18:02:09,152 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 18:02:09,198 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:02:09,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 18:02:09,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 18:02:09,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 18:02:09,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 18:02:09,211 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-07-28 18:02:09,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:02:09,313 INFO L93 Difference]: Finished difference Result 47 states and 74 transitions. [2020-07-28 18:02:09,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 18:02:09,314 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-07-28 18:02:09,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 18:02:09,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 18:02:09,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 74 transitions. [2020-07-28 18:02:09,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 18:02:09,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 74 transitions. [2020-07-28 18:02:09,338 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 74 transitions. [2020-07-28 18:02:09,461 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 74 edges. 74 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:02:09,472 INFO L225 Difference]: With dead ends: 47 [2020-07-28 18:02:09,472 INFO L226 Difference]: Without dead ends: 19 [2020-07-28 18:02:09,476 INFO L675 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 [2020-07-28 18:02:09,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-28 18:02:09,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-28 18:02:09,508 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 18:02:09,509 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand 19 states. [2020-07-28 18:02:09,509 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-28 18:02:09,509 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-28 18:02:09,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:02:09,512 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2020-07-28 18:02:09,512 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2020-07-28 18:02:09,513 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:02:09,513 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:02:09,513 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-28 18:02:09,514 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-28 18:02:09,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:02:09,516 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2020-07-28 18:02:09,516 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2020-07-28 18:02:09,517 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:02:09,517 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:02:09,517 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 18:02:09,517 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 18:02:09,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-28 18:02:09,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2020-07-28 18:02:09,521 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 11 [2020-07-28 18:02:09,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 18:02:09,521 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2020-07-28 18:02:09,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 18:02:09,522 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2020-07-28 18:02:09,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-28 18:02:09,522 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 18:02:09,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 18:02:09,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 18:02:09,523 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 18:02:09,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 18:02:09,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1993200173, now seen corresponding path program 1 times [2020-07-28 18:02:09,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 18:02:09,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222220271] [2020-07-28 18:02:09,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 18:02:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 18:02:09,570 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 18:02:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 18:02:09,600 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 18:02:09,631 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 18:02:09,632 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 18:02:09,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 18:02:09,663 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 18:02:09,663 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 18:02:09,663 WARN L170 areAnnotationChecker]: L995-3 has no Hoare annotation [2020-07-28 18:02:09,663 WARN L170 areAnnotationChecker]: L995-3 has no Hoare annotation [2020-07-28 18:02:09,663 WARN L170 areAnnotationChecker]: L995-4 has no Hoare annotation [2020-07-28 18:02:09,664 WARN L170 areAnnotationChecker]: L995-1 has no Hoare annotation [2020-07-28 18:02:09,664 WARN L170 areAnnotationChecker]: L995-1 has no Hoare annotation [2020-07-28 18:02:09,664 WARN L170 areAnnotationChecker]: L1005 has no Hoare annotation [2020-07-28 18:02:09,664 WARN L170 areAnnotationChecker]: L1005 has no Hoare annotation [2020-07-28 18:02:09,664 WARN L170 areAnnotationChecker]: L1005-2 has no Hoare annotation [2020-07-28 18:02:09,664 WARN L170 areAnnotationChecker]: L1015-3 has no Hoare annotation [2020-07-28 18:02:09,665 WARN L170 areAnnotationChecker]: L1015-3 has no Hoare annotation [2020-07-28 18:02:09,665 WARN L170 areAnnotationChecker]: L1032-3 has no Hoare annotation [2020-07-28 18:02:09,665 WARN L170 areAnnotationChecker]: L1032-3 has no Hoare annotation [2020-07-28 18:02:09,665 WARN L170 areAnnotationChecker]: L1015-4 has no Hoare annotation [2020-07-28 18:02:09,665 WARN L170 areAnnotationChecker]: L1015-1 has no Hoare annotation [2020-07-28 18:02:09,666 WARN L170 areAnnotationChecker]: L1015-1 has no Hoare annotation [2020-07-28 18:02:09,666 WARN L170 areAnnotationChecker]: L1032-4 has no Hoare annotation [2020-07-28 18:02:09,666 WARN L170 areAnnotationChecker]: L1032-1 has no Hoare annotation [2020-07-28 18:02:09,666 WARN L170 areAnnotationChecker]: L1032-1 has no Hoare annotation [2020-07-28 18:02:09,666 WARN L170 areAnnotationChecker]: L1017 has no Hoare annotation [2020-07-28 18:02:09,666 WARN L170 areAnnotationChecker]: L1017 has no Hoare annotation [2020-07-28 18:02:09,667 WARN L170 areAnnotationChecker]: L1039-2 has no Hoare annotation [2020-07-28 18:02:09,667 WARN L170 areAnnotationChecker]: L1039-2 has no Hoare annotation [2020-07-28 18:02:09,667 WARN L170 areAnnotationChecker]: L1039-2 has no Hoare annotation [2020-07-28 18:02:09,667 WARN L170 areAnnotationChecker]: L1039-3 has no Hoare annotation [2020-07-28 18:02:09,667 WARN L170 areAnnotationChecker]: L1041 has no Hoare annotation [2020-07-28 18:02:09,667 WARN L170 areAnnotationChecker]: L1041 has no Hoare annotation [2020-07-28 18:02:09,668 WARN L170 areAnnotationChecker]: L1048-2 has no Hoare annotation [2020-07-28 18:02:09,668 WARN L170 areAnnotationChecker]: L1048-2 has no Hoare annotation [2020-07-28 18:02:09,668 WARN L170 areAnnotationChecker]: L1048-2 has no Hoare annotation [2020-07-28 18:02:09,668 WARN L170 areAnnotationChecker]: L1042-3 has no Hoare annotation [2020-07-28 18:02:09,668 WARN L170 areAnnotationChecker]: L1042-3 has no Hoare annotation [2020-07-28 18:02:09,668 WARN L170 areAnnotationChecker]: L1042-3 has no Hoare annotation [2020-07-28 18:02:09,669 WARN L170 areAnnotationChecker]: L1042-3 has no Hoare annotation [2020-07-28 18:02:09,669 WARN L170 areAnnotationChecker]: L1041-1 has no Hoare annotation [2020-07-28 18:02:09,669 WARN L170 areAnnotationChecker]: L1048-3 has no Hoare annotation [2020-07-28 18:02:09,669 WARN L170 areAnnotationChecker]: L1042-2 has no Hoare annotation [2020-07-28 18:02:09,669 WARN L170 areAnnotationChecker]: L1042-2 has no Hoare annotation [2020-07-28 18:02:09,669 WARN L170 areAnnotationChecker]: L1055 has no Hoare annotation [2020-07-28 18:02:09,670 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 18:02:09,670 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 18:02:09,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 06:02:09 BoogieIcfgContainer [2020-07-28 18:02:09,672 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 18:02:09,673 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 18:02:09,673 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 18:02:09,673 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 18:02:09,674 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:02:08" (3/4) ... [2020-07-28 18:02:09,677 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 18:02:09,732 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 18:02:09,732 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 18:02:09,737 INFO L168 Benchmark]: Toolchain (without parser) took 2244.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 962.9 MB in the beginning and 1.0 GB in the end (delta: -47.3 MB). Peak memory consumption was 86.9 MB. Max. memory is 11.5 GB. [2020-07-28 18:02:09,739 INFO L168 Benchmark]: CDTParser took 0.82 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 18:02:09,740 INFO L168 Benchmark]: CACSL2BoogieTranslator took 583.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 957.5 MB in the beginning and 1.1 GB in the end (delta: -159.5 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2020-07-28 18:02:09,741 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. [2020-07-28 18:02:09,742 INFO L168 Benchmark]: Boogie Preprocessor took 46.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 18:02:09,746 INFO L168 Benchmark]: RCFGBuilder took 661.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 11.5 GB. [2020-07-28 18:02:09,748 INFO L168 Benchmark]: TraceAbstraction took 818.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 59.9 MB). Peak memory consumption was 59.9 MB. Max. memory is 11.5 GB. [2020-07-28 18:02:09,749 INFO L168 Benchmark]: Witness Printer took 59.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 18:02:09,757 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.82 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 583.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 957.5 MB in the beginning and 1.1 GB in the end (delta: -159.5 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 62.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 46.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 661.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 818.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 59.9 MB). Peak memory consumption was 59.9 MB. Max. memory is 11.5 GB. * Witness Printer took 59.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1042]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L988] SLL* head = malloc(sizeof(SLL)); [L989] head->next = ((void*)0) [L990] head->data = 0 [L992] SLL* x = head; [L995] COND FALSE !(__VERIFIER_nondet_int()) [L1005] COND TRUE __VERIFIER_nondet_int() [L1006] x = malloc(sizeof(SLL)) [L1007] x->data = 1 [L1008] x->next = head [L1009] head = x [L1029] x = head [L1032] EXPR x->data [L1032] COND FALSE !(x->data != 1) [L1038] EXPR x->next [L1038] x = x->next [L1039] COND TRUE \read(*x) [L1041] EXPR x->data [L1041] COND TRUE x->data != 1 [L1042] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...