./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/recursive_list.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab 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/ldv-regression/recursive_list.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 3d5040117e2eabdebb8b19ac037d1eb680a830cf ......................................................................................................................................................................................................................................................... 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 0.1.24-30f4e4a [2019-11-27 23:53:05,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:53:05,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:53:05,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:53:05,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:53:05,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:53:05,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:53:05,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:53:05,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:53:05,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:53:05,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:53:05,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:53:05,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:53:05,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:53:05,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:53:05,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:53:05,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:53:05,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:53:05,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:53:05,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:53:05,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:53:05,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:53:05,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:53:05,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:53:05,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:53:05,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:53:05,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:53:05,323 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:53:05,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:53:05,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:53:05,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:53:05,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:53:05,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:53:05,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:53:05,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:53:05,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:53:05,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:53:05,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:53:05,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:53:05,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:53:05,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:53:05,334 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:53:05,371 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:53:05,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:53:05,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:53:05,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:53:05,379 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:53:05,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:53:05,380 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:53:05,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:53:05,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:53:05,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:53:05,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:53:05,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:53:05,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:53:05,383 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:53:05,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:53:05,386 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:53:05,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:53:05,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:53:05,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:53:05,387 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:53:05,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:53:05,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:53:05,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:53:05,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:53:05,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:53:05,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:53:05,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:53:05,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:53:05,391 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 -> 3d5040117e2eabdebb8b19ac037d1eb680a830cf [2019-11-27 23:53:05,753 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:53:05,767 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:53:05,770 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:53:05,771 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:53:05,772 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:53:05,774 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/recursive_list.i [2019-11-27 23:53:05,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f13a253b9/6ace01ab4c5741cfbaeaea6545829f59/FLAGe0ee54c25 [2019-11-27 23:53:06,352 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:53:06,353 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/recursive_list.i [2019-11-27 23:53:06,360 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f13a253b9/6ace01ab4c5741cfbaeaea6545829f59/FLAGe0ee54c25 [2019-11-27 23:53:06,723 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f13a253b9/6ace01ab4c5741cfbaeaea6545829f59 [2019-11-27 23:53:06,726 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:53:06,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:53:06,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:53:06,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:53:06,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:53:06,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:53:06" (1/1) ... [2019-11-27 23:53:06,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b9aeaa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:06, skipping insertion in model container [2019-11-27 23:53:06,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:53:06" (1/1) ... [2019-11-27 23:53:06,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:53:06,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:53:06,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:53:06,950 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:53:06,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:53:06,987 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:53:06,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:06 WrapperNode [2019-11-27 23:53:06,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:53:06,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:53:06,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:53:06,989 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:53:06,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:06" (1/1) ... [2019-11-27 23:53:07,065 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:06" (1/1) ... [2019-11-27 23:53:07,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:53:07,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:53:07,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:53:07,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:53:07,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:06" (1/1) ... [2019-11-27 23:53:07,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:06" (1/1) ... [2019-11-27 23:53:07,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:06" (1/1) ... [2019-11-27 23:53:07,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:06" (1/1) ... [2019-11-27 23:53:07,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:06" (1/1) ... [2019-11-27 23:53:07,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:06" (1/1) ... [2019-11-27 23:53:07,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:06" (1/1) ... [2019-11-27 23:53:07,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:53:07,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:53:07,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:53:07,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:53:07,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:06" (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 [2019-11-27 23:53:07,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-27 23:53:07,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:53:07,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-27 23:53:07,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 23:53:07,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-27 23:53:07,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:53:07,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:53:07,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 23:53:07,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:53:07,464 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:53:07,465 INFO L297 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-27 23:53:07,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:07 BoogieIcfgContainer [2019-11-27 23:53:07,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:53:07,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:53:07,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:53:07,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:53:07,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:53:06" (1/3) ... [2019-11-27 23:53:07,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69799c7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:53:07, skipping insertion in model container [2019-11-27 23:53:07,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:06" (2/3) ... [2019-11-27 23:53:07,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69799c7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:53:07, skipping insertion in model container [2019-11-27 23:53:07,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:07" (3/3) ... [2019-11-27 23:53:07,495 INFO L109 eAbstractionObserver]: Analyzing ICFG recursive_list.i [2019-11-27 23:53:07,516 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:53:07,524 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:53:07,551 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:53:07,579 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:53:07,579 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:53:07,580 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:53:07,580 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:53:07,580 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:53:07,580 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:53:07,580 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:53:07,580 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:53:07,598 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-27 23:53:07,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-27 23:53:07,604 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:07,605 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:53:07,606 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:07,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:07,613 INFO L82 PathProgramCache]: Analyzing trace with hash 87858985, now seen corresponding path program 1 times [2019-11-27 23:53:07,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:53:07,623 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138571315] [2019-11-27 23:53:07,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:53:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:53:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:53:07,889 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:53:07,890 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:53:07,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:53:07 BoogieIcfgContainer [2019-11-27 23:53:07,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:53:07,925 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:53:07,925 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:53:07,925 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:53:07,926 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:07" (3/4) ... [2019-11-27 23:53:07,928 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 23:53:07,982 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:53:07,982 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:53:07,985 INFO L168 Benchmark]: Toolchain (without parser) took 1255.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -131.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:07,985 INFO L168 Benchmark]: CDTParser took 0.35 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. [2019-11-27 23:53:07,986 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.23 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 944.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:07,987 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -182.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:07,988 INFO L168 Benchmark]: Boogie Preprocessor took 27.66 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. [2019-11-27 23:53:07,988 INFO L168 Benchmark]: RCFGBuilder took 346.24 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:07,989 INFO L168 Benchmark]: TraceAbstraction took 449.60 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:07,996 INFO L168 Benchmark]: Witness Printer took 56.97 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. [2019-11-27 23:53:08,001 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 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 259.23 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 944.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 107.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -182.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.66 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 346.24 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 449.60 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * Witness Printer took 56.97 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int i = 1; VAL [i=1] [L37] struct list *l,m; [L38] l = &m [L39] l->next = 0 [L40] l->n = 0 [L25] struct list *new_el; [L20] return malloc(8U); VAL [i=1] [L27] new_el = allocate_memory() [L29] new_el->n = n [L30] new_el->next = l [L32] return new_el; VAL [i=1] [L42] l = append(l, 1) [L25] struct list *new_el; [L20] return malloc(8U); VAL [i=1] [L27] new_el = allocate_memory() [L29] new_el->n = n [L30] new_el->next = l [L32] return new_el; VAL [i=1] [L43] l = append(l, 2) [L48] EXPR l->next [L48] EXPR l->next->next [L48] EXPR l->next->next->n VAL [i=1] [L48] COND TRUE l->next->next->n == 0 [L8] __VERIFIER_error() VAL [i=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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...