./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/dll-sorted-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/dll-sorted-1.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 3d1a973dcd7009ffcd2eda1338249f4d290fb62a ............................................................................................................................................................................................................................................................................................................................................................................. 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-f470102 [2019-11-28 16:58:47,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:58:47,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:58:47,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:58:47,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:58:47,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:58:47,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:58:47,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:58:47,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:58:47,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:58:47,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:58:47,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:58:47,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:58:47,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:58:47,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:58:47,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:58:47,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:58:47,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:58:47,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:58:47,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:58:47,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:58:47,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:58:47,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:58:47,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:58:47,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:58:47,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:58:47,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:58:47,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:58:47,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:58:47,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:58:47,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:58:47,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:58:47,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:58:47,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:58:47,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:58:47,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:58:47,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:58:47,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:58:47,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:58:47,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:58:47,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:58:47,219 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:58:47,252 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:58:47,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:58:47,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:58:47,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:58:47,257 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:58:47,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:58:47,259 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:58:47,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:58:47,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:58:47,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:58:47,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:58:47,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:58:47,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:58:47,262 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:58:47,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:58:47,263 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:58:47,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:58:47,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:58:47,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:58:47,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:58:47,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:58:47,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:58:47,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:58:47,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:58:47,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:58:47,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:58:47,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:58:47,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:58:47,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:58:47,268 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 -> 3d1a973dcd7009ffcd2eda1338249f4d290fb62a [2019-11-28 16:58:47,611 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:58:47,633 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:58:47,637 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:58:47,638 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:58:47,640 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:58:47,641 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-sorted-1.i [2019-11-28 16:58:47,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/340a8e2c0/8f34507bc609426fb67c873616ccdaad/FLAG129f0d911 [2019-11-28 16:58:48,223 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:58:48,224 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-1.i [2019-11-28 16:58:48,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/340a8e2c0/8f34507bc609426fb67c873616ccdaad/FLAG129f0d911 [2019-11-28 16:58:48,503 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/340a8e2c0/8f34507bc609426fb67c873616ccdaad [2019-11-28 16:58:48,507 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:58:48,508 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:58:48,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:58:48,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:58:48,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:58:48,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:58:48" (1/1) ... [2019-11-28 16:58:48,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@423e9f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:48, skipping insertion in model container [2019-11-28 16:58:48,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:58:48" (1/1) ... [2019-11-28 16:58:48,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:58:48,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:58:48,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:58:49,006 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:58:49,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:58:49,117 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:58:49,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:49 WrapperNode [2019-11-28 16:58:49,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:58:49,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:58:49,119 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:58:49,119 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:58:49,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:49" (1/1) ... [2019-11-28 16:58:49,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:49" (1/1) ... [2019-11-28 16:58:49,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:58:49,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:58:49,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:58:49,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:58:49,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:49" (1/1) ... [2019-11-28 16:58:49,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:49" (1/1) ... [2019-11-28 16:58:49,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:49" (1/1) ... [2019-11-28 16:58:49,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:49" (1/1) ... [2019-11-28 16:58:49,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:49" (1/1) ... [2019-11-28 16:58:49,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:49" (1/1) ... [2019-11-28 16:58:49,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:49" (1/1) ... [2019-11-28 16:58:49,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:58:49,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:58:49,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:58:49,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:58:49,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:49" (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 [2019-11-28 16:58:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:58:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 16:58:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 16:58:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-28 16:58:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-28 16:58:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:58:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:58:49,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:58:49,758 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:58:49,759 INFO L287 CfgBuilder]: Removed 22 assume(true) statements. [2019-11-28 16:58:49,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:58:49 BoogieIcfgContainer [2019-11-28 16:58:49,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:58:49,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:58:49,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:58:49,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:58:49,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:58:48" (1/3) ... [2019-11-28 16:58:49,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4608d852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:58:49, skipping insertion in model container [2019-11-28 16:58:49,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:49" (2/3) ... [2019-11-28 16:58:49,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4608d852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:58:49, skipping insertion in model container [2019-11-28 16:58:49,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:58:49" (3/3) ... [2019-11-28 16:58:49,773 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2019-11-28 16:58:49,783 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:58:49,794 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-28 16:58:49,808 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-28 16:58:49,833 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:58:49,833 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:58:49,833 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:58:49,833 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:58:49,834 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:58:49,834 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:58:49,834 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:58:49,834 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:58:49,848 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2019-11-28 16:58:49,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 16:58:49,853 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:58:49,854 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 16:58:49,855 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:58:49,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:58:49,860 INFO L82 PathProgramCache]: Analyzing trace with hash 890153286, now seen corresponding path program 1 times [2019-11-28 16:58:49,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:58:49,867 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746851897] [2019-11-28 16:58:49,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:58:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:58:49,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:58:49,999 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746851897] [2019-11-28 16:58:50,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:58:50,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 16:58:50,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119019762] [2019-11-28 16:58:50,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:58:50,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:58:50,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:58:50,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:58:50,019 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2019-11-28 16:58:50,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:58:50,039 INFO L93 Difference]: Finished difference Result 106 states and 172 transitions. [2019-11-28 16:58:50,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:58:50,041 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-28 16:58:50,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:58:50,050 INFO L225 Difference]: With dead ends: 106 [2019-11-28 16:58:50,051 INFO L226 Difference]: Without dead ends: 50 [2019-11-28 16:58:50,054 INFO L630 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 [2019-11-28 16:58:50,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-28 16:58:50,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-11-28 16:58:50,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-28 16:58:50,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2019-11-28 16:58:50,089 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 6 [2019-11-28 16:58:50,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:58:50,090 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2019-11-28 16:58:50,090 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:58:50,090 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2019-11-28 16:58:50,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 16:58:50,091 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:58:50,091 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:58:50,091 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:58:50,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:58:50,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1806859191, now seen corresponding path program 1 times [2019-11-28 16:58:50,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:58:50,092 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415267801] [2019-11-28 16:58:50,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:58:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:58:50,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:58:50,144 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415267801] [2019-11-28 16:58:50,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:58:50,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 16:58:50,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39972823] [2019-11-28 16:58:50,146 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 16:58:50,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:58:50,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 16:58:50,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 16:58:50,148 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 3 states. [2019-11-28 16:58:50,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:58:50,207 INFO L93 Difference]: Finished difference Result 103 states and 126 transitions. [2019-11-28 16:58:50,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 16:58:50,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-28 16:58:50,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:58:50,209 INFO L225 Difference]: With dead ends: 103 [2019-11-28 16:58:50,209 INFO L226 Difference]: Without dead ends: 55 [2019-11-28 16:58:50,211 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 16:58:50,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-28 16:58:50,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2019-11-28 16:58:50,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-28 16:58:50,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2019-11-28 16:58:50,219 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 7 [2019-11-28 16:58:50,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:58:50,220 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2019-11-28 16:58:50,220 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 16:58:50,220 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2019-11-28 16:58:50,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 16:58:50,221 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:58:50,221 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:58:50,221 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:58:50,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:58:50,222 INFO L82 PathProgramCache]: Analyzing trace with hash 443319948, now seen corresponding path program 1 times [2019-11-28 16:58:50,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:58:50,223 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177578216] [2019-11-28 16:58:50,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:58:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:58:50,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-28 16:58:50,348 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177578216] [2019-11-28 16:58:50,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:58:50,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 16:58:50,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782899878] [2019-11-28 16:58:50,349 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:58:50,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:58:50,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:58:50,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:58:50,350 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand 4 states. [2019-11-28 16:58:50,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:58:50,505 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2019-11-28 16:58:50,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:58:50,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 16:58:50,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:58:50,508 INFO L225 Difference]: With dead ends: 87 [2019-11-28 16:58:50,508 INFO L226 Difference]: Without dead ends: 85 [2019-11-28 16:58:50,509 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 16:58:50,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-11-28 16:58:50,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 52. [2019-11-28 16:58:50,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-28 16:58:50,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2019-11-28 16:58:50,519 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 11 [2019-11-28 16:58:50,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:58:50,519 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2019-11-28 16:58:50,519 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:58:50,520 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2019-11-28 16:58:50,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-28 16:58:50,521 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:58:50,521 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:58:50,521 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:58:50,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:58:50,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1236050174, now seen corresponding path program 1 times [2019-11-28 16:58:50,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:58:50,523 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849834625] [2019-11-28 16:58:50,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:58:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:58:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:58:50,711 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:58:50,711 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:58:50,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:58:50 BoogieIcfgContainer [2019-11-28 16:58:50,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:58:50,770 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:58:50,771 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:58:50,771 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:58:50,772 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:58:49" (3/4) ... [2019-11-28 16:58:50,774 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 16:58:50,828 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:58:50,828 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:58:50,831 INFO L168 Benchmark]: Toolchain (without parser) took 2321.89 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 956.3 MB in the beginning and 992.7 MB in the end (delta: -36.4 MB). Peak memory consumption was 75.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:58:50,834 INFO L168 Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:58:50,835 INFO L168 Benchmark]: CACSL2BoogieTranslator took 604.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -136.4 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-11-28 16:58:50,836 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:58:50,836 INFO L168 Benchmark]: Boogie Preprocessor took 35.92 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:58:50,837 INFO L168 Benchmark]: RCFGBuilder took 555.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 11.5 GB. [2019-11-28 16:58:50,839 INFO L168 Benchmark]: TraceAbstraction took 1006.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 992.7 MB in the end (delta: 60.8 MB). Peak memory consumption was 60.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:58:50,840 INFO L168 Benchmark]: Witness Printer took 58.13 ms. Allocated memory is still 1.1 GB. Free memory is still 992.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:58:50,846 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 604.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -136.4 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.92 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 555.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1006.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 992.7 MB in the end (delta: 60.8 MB). Peak memory consumption was 60.8 MB. Max. memory is 11.5 GB. * Witness Printer took 58.13 ms. Allocated memory is still 1.1 GB. Free memory is still 992.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1027]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = ((void*)0) [L988] head->prev = ((void*)0) [L989] head->data = 0 [L991] SLL* x = head; [L992] int marked = 0; [L995] COND TRUE __VERIFIER_nondet_int() || !marked [L998] x->next = malloc(sizeof(SLL)) [L999] EXPR x->next [L999] x->next->prev = x [L1000] EXPR x->next [L1000] x = x->next [L1001] x->next = ((void*)0) [L1003] COND TRUE __VERIFIER_nondet_int() [L1005] marked = 1 [L1008] COND TRUE \read(marked) [L1009] x->data = 1 [L995] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1014] x = head [L1016] COND FALSE !(!(((void*)0) != x)) [L1017] marked = 0 [L1019] EXPR x->next [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] EXPR x->next [L1019] EXPR x->next->data [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1024] EXPR x->next [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1026] EXPR x->next [L1026] x = x->next [L1027] EXPR x->data [L1027] COND TRUE !(x->data != 1) [L1027] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 56 locations, 6 error locations. Result: UNSAFE, OverallTime: 0.8s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 161 SDtfs, 156 SDslu, 51 SDs, 0 SdLazy, 50 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred 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, 3 MinimizatonAttempts, 34 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 425 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...