./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/sll-optional-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-optional-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 9782fe34c3bae6ab09bbe7588de1b0d436c1fccc ...................................................................................................................................................................................................................................................................................................................................................................... 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 18:01:44,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 18:01:44,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 18:01:44,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 18:01:44,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 18:01:44,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 18:01:44,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 18:01:44,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 18:01:44,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 18:01:44,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 18:01:44,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 18:01:44,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 18:01:44,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 18:01:44,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 18:01:44,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 18:01:44,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 18:01:44,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 18:01:44,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 18:01:44,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 18:01:44,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 18:01:44,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 18:01:44,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 18:01:44,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 18:01:44,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 18:01:44,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 18:01:44,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 18:01:44,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 18:01:44,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 18:01:44,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 18:01:44,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 18:01:44,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 18:01:44,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 18:01:44,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 18:01:44,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 18:01:44,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 18:01:44,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 18:01:44,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 18:01:44,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 18:01:44,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 18:01:44,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 18:01:44,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 18:01:44,377 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 18:01:44,393 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 18:01:44,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 18:01:44,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 18:01:44,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 18:01:44,396 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 18:01:44,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 18:01:44,396 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 18:01:44,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 18:01:44,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 18:01:44,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 18:01:44,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 18:01:44,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 18:01:44,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 18:01:44,398 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 18:01:44,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 18:01:44,399 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 18:01:44,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 18:01:44,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 18:01:44,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 18:01:44,400 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 18:01:44,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 18:01:44,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 18:01:44,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 18:01:44,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 18:01:44,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 18:01:44,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 18:01:44,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 18:01:44,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 18:01:44,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 18:01:44,403 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 -> 9782fe34c3bae6ab09bbe7588de1b0d436c1fccc [2020-07-28 18:01:44,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 18:01:44,721 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 18:01:44,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 18:01:44,726 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 18:01:44,726 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 18:01:44,727 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-optional-2.i [2020-07-28 18:01:44,801 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a33bf9be/4cf7bcf7dc25486e80f994693c829195/FLAG5e0394337 [2020-07-28 18:01:45,315 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 18:01:45,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-optional-2.i [2020-07-28 18:01:45,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a33bf9be/4cf7bcf7dc25486e80f994693c829195/FLAG5e0394337 [2020-07-28 18:01:45,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a33bf9be/4cf7bcf7dc25486e80f994693c829195 [2020-07-28 18:01:45,643 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 18:01:45,646 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 18:01:45,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 18:01:45,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 18:01:45,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 18:01:45,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:01:45" (1/1) ... [2020-07-28 18:01:45,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@188f5ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:01:45, skipping insertion in model container [2020-07-28 18:01:45,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:01:45" (1/1) ... [2020-07-28 18:01:45,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 18:01:45,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 18:01:46,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:01:46,165 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 18:01:46,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:01:46,266 INFO L208 MainTranslator]: Completed translation [2020-07-28 18:01:46,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:01:46 WrapperNode [2020-07-28 18:01:46,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 18:01:46,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 18:01:46,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 18:01:46,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 18:01:46,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:01:46" (1/1) ... [2020-07-28 18:01:46,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:01:46" (1/1) ... [2020-07-28 18:01:46,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 18:01:46,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 18:01:46,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 18:01:46,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 18:01:46,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:01:46" (1/1) ... [2020-07-28 18:01:46,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:01:46" (1/1) ... [2020-07-28 18:01:46,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:01:46" (1/1) ... [2020-07-28 18:01:46,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:01:46" (1/1) ... [2020-07-28 18:01:46,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:01:46" (1/1) ... [2020-07-28 18:01:46,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:01:46" (1/1) ... [2020-07-28 18:01:46,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:01:46" (1/1) ... [2020-07-28 18:01:46,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 18:01:46,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 18:01:46,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 18:01:46,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 18:01:46,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:01:46" (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 18:01:46,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 18:01:46,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 18:01:46,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-28 18:01:46,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-28 18:01:46,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-28 18:01:46,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 18:01:46,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 18:01:46,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 18:01:46,994 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 18:01:46,994 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-07-28 18:01:46,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:01:46 BoogieIcfgContainer [2020-07-28 18:01:46,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 18:01:47,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 18:01:47,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 18:01:47,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 18:01:47,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 06:01:45" (1/3) ... [2020-07-28 18:01:47,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443ebaf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:01:47, skipping insertion in model container [2020-07-28 18:01:47,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:01:46" (2/3) ... [2020-07-28 18:01:47,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443ebaf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:01:47, skipping insertion in model container [2020-07-28 18:01:47,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:01:46" (3/3) ... [2020-07-28 18:01:47,008 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-optional-2.i [2020-07-28 18:01:47,018 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 18:01:47,026 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 18:01:47,040 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 18:01:47,065 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 18:01:47,065 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 18:01:47,065 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 18:01:47,065 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 18:01:47,066 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 18:01:47,066 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 18:01:47,066 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 18:01:47,067 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 18:01:47,083 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-07-28 18:01:47,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-28 18:01:47,090 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 18:01:47,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 18:01:47,091 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 18:01:47,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 18:01:47,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1853593862, now seen corresponding path program 1 times [2020-07-28 18:01:47,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 18:01:47,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618397031] [2020-07-28 18:01:47,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 18:01:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:01:47,284 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 18:01:47,285 INFO L280 TraceCheckUtils]: 1: Hoare triple {29#true} havoc main_#res;havoc main_#t~malloc0.base, main_#t~malloc0.offset, main_#t~nondet1, main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~mem3.base, main_#t~mem3.offset, main_#t~nondet4, main_#t~malloc6.base, main_#t~malloc6.offset, main_#t~mem7.base, main_#t~mem7.offset, main_#t~nondet8, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~mem10.base, main_#t~mem10.offset, main_#t~nondet11, main_#t~nondet5, main_#t~mem12, main_#t~mem13.base, main_#t~mem13.offset, main_#t~short14, main_#t~mem15.base, main_#t~mem15.offset, main_#t~mem16.base, main_#t~mem16.offset, main_#t~mem17, 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(12);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);assume -2147483648 <= main_#t~nondet1 && main_#t~nondet1 <= 2147483647; {29#true} is VALID [2020-07-28 18:01:47,285 INFO L280 TraceCheckUtils]: 2: Hoare triple {29#true} assume 0 != main_#t~nondet1;havoc main_#t~nondet1;call write~int(2, main_~head~0.base, 8 + main_~head~0.offset, 4);call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(12);call write~$Pointer$(main_#t~malloc2.base, main_#t~malloc2.offset, main_~head~0.base, 4 + main_~head~0.offset, 4);call main_#t~mem3.base, main_#t~mem3.offset := read~$Pointer$(main_~head~0.base, 4 + main_~head~0.offset, 4);call write~$Pointer$(0, 0, main_#t~mem3.base, main_#t~mem3.offset, 4);havoc main_#t~mem3.base, main_#t~mem3.offset; {29#true} is VALID [2020-07-28 18:01:47,286 INFO L280 TraceCheckUtils]: 3: Hoare triple {29#true} main_~x~0.base, main_~x~0.offset := main_~head~0.base, main_~head~0.offset; {29#true} is VALID [2020-07-28 18:01:47,288 INFO L280 TraceCheckUtils]: 4: Hoare triple {29#true} assume !true; {30#false} is VALID [2020-07-28 18:01:47,288 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 18:01:47,289 INFO L280 TraceCheckUtils]: 6: Hoare triple {30#false} assume !!(main_~x~0.base != 0 || main_~x~0.offset != 0); {30#false} is VALID [2020-07-28 18:01:47,289 INFO L280 TraceCheckUtils]: 7: Hoare triple {30#false} call main_#t~mem12 := read~int(main_~x~0.base, 8 + main_~x~0.offset, 4);main_#t~short14 := 2 == main_#t~mem12; {30#false} is VALID [2020-07-28 18:01:47,289 INFO L280 TraceCheckUtils]: 8: Hoare triple {30#false} assume main_#t~short14;call main_#t~mem13.base, main_#t~mem13.offset := read~$Pointer$(main_~x~0.base, 4 + main_~x~0.offset, 4);main_#t~short14 := main_#t~mem13.base == main_~x~0.base && main_#t~mem13.offset == main_~x~0.offset; {30#false} is VALID [2020-07-28 18:01:47,290 INFO L280 TraceCheckUtils]: 9: Hoare triple {30#false} assume !main_#t~short14;havoc main_#t~short14;havoc main_#t~mem12;havoc main_#t~mem13.base, main_#t~mem13.offset; {30#false} is VALID [2020-07-28 18:01:47,290 INFO L280 TraceCheckUtils]: 10: Hoare triple {30#false} assume !false; {30#false} is VALID [2020-07-28 18:01:47,294 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 18:01:47,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618397031] [2020-07-28 18:01:47,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 18:01:47,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 18:01:47,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835777128] [2020-07-28 18:01:47,304 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-07-28 18:01:47,306 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 18:01:47,310 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 18:01:47,338 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 18:01:47,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 18:01:47,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 18:01:47,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 18:01:47,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 18:01:47,351 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-07-28 18:01:47,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:01:47,439 INFO L93 Difference]: Finished difference Result 43 states and 65 transitions. [2020-07-28 18:01:47,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 18:01:47,439 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-07-28 18:01:47,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 18:01:47,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 18:01:47,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 65 transitions. [2020-07-28 18:01:47,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 18:01:47,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 65 transitions. [2020-07-28 18:01:47,451 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 65 transitions. [2020-07-28 18:01:47,558 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 65 edges. 65 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:01:47,569 INFO L225 Difference]: With dead ends: 43 [2020-07-28 18:01:47,570 INFO L226 Difference]: Without dead ends: 18 [2020-07-28 18:01:47,573 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 18:01:47,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-28 18:01:47,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-28 18:01:47,609 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 18:01:47,610 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand 18 states. [2020-07-28 18:01:47,611 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2020-07-28 18:01:47,611 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2020-07-28 18:01:47,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:01:47,614 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2020-07-28 18:01:47,614 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2020-07-28 18:01:47,615 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:01:47,615 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:01:47,616 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2020-07-28 18:01:47,616 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2020-07-28 18:01:47,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:01:47,618 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2020-07-28 18:01:47,619 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2020-07-28 18:01:47,619 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:01:47,619 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:01:47,620 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 18:01:47,620 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 18:01:47,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-28 18:01:47,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2020-07-28 18:01:47,624 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 11 [2020-07-28 18:01:47,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 18:01:47,624 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2020-07-28 18:01:47,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 18:01:47,625 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2020-07-28 18:01:47,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-28 18:01:47,626 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 18:01:47,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 18:01:47,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 18:01:47,627 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 18:01:47,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 18:01:47,628 INFO L82 PathProgramCache]: Analyzing trace with hash -2143092324, now seen corresponding path program 1 times [2020-07-28 18:01:47,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 18:01:47,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55756893] [2020-07-28 18:01:47,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 18:01:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 18:01:47,676 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 18:01:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 18:01:47,750 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 18:01:47,796 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 18:01:47,797 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 18:01:47,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 18:01:47,854 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 18:01:47,855 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 18:01:47,855 WARN L170 areAnnotationChecker]: L987 has no Hoare annotation [2020-07-28 18:01:47,855 WARN L170 areAnnotationChecker]: L987 has no Hoare annotation [2020-07-28 18:01:47,855 WARN L170 areAnnotationChecker]: L987-4 has no Hoare annotation [2020-07-28 18:01:47,855 WARN L170 areAnnotationChecker]: L987-2 has no Hoare annotation [2020-07-28 18:01:47,856 WARN L170 areAnnotationChecker]: L987-2 has no Hoare annotation [2020-07-28 18:01:47,856 WARN L170 areAnnotationChecker]: L990-7 has no Hoare annotation [2020-07-28 18:01:47,856 WARN L170 areAnnotationChecker]: L990-7 has no Hoare annotation [2020-07-28 18:01:47,856 WARN L170 areAnnotationChecker]: L990-8 has no Hoare annotation [2020-07-28 18:01:47,857 WARN L170 areAnnotationChecker]: L990-1 has no Hoare annotation [2020-07-28 18:01:47,857 WARN L170 areAnnotationChecker]: L990-1 has no Hoare annotation [2020-07-28 18:01:47,857 WARN L170 areAnnotationChecker]: L994-2 has no Hoare annotation [2020-07-28 18:01:47,857 WARN L170 areAnnotationChecker]: L994-2 has no Hoare annotation [2020-07-28 18:01:47,858 WARN L170 areAnnotationChecker]: L994-2 has no Hoare annotation [2020-07-28 18:01:47,858 WARN L170 areAnnotationChecker]: L990-3 has no Hoare annotation [2020-07-28 18:01:47,858 WARN L170 areAnnotationChecker]: L990-3 has no Hoare annotation [2020-07-28 18:01:47,858 WARN L170 areAnnotationChecker]: L994-3 has no Hoare annotation [2020-07-28 18:01:47,858 WARN L170 areAnnotationChecker]: L996-7 has no Hoare annotation [2020-07-28 18:01:47,859 WARN L170 areAnnotationChecker]: L996-7 has no Hoare annotation [2020-07-28 18:01:47,859 WARN L170 areAnnotationChecker]: L990-5 has no Hoare annotation [2020-07-28 18:01:47,859 WARN L170 areAnnotationChecker]: L990-5 has no Hoare annotation [2020-07-28 18:01:47,859 WARN L170 areAnnotationChecker]: L1002-2 has no Hoare annotation [2020-07-28 18:01:47,860 WARN L170 areAnnotationChecker]: L1002-2 has no Hoare annotation [2020-07-28 18:01:47,860 WARN L170 areAnnotationChecker]: L1002-2 has no Hoare annotation [2020-07-28 18:01:47,860 WARN L170 areAnnotationChecker]: L996-1 has no Hoare annotation [2020-07-28 18:01:47,860 WARN L170 areAnnotationChecker]: L996-1 has no Hoare annotation [2020-07-28 18:01:47,860 WARN L170 areAnnotationChecker]: L996-8 has no Hoare annotation [2020-07-28 18:01:47,861 WARN L170 areAnnotationChecker]: L1002-3 has no Hoare annotation [2020-07-28 18:01:47,861 WARN L170 areAnnotationChecker]: L1006 has no Hoare annotation [2020-07-28 18:01:47,861 WARN L170 areAnnotationChecker]: L1006 has no Hoare annotation [2020-07-28 18:01:47,861 WARN L170 areAnnotationChecker]: L996-3 has no Hoare annotation [2020-07-28 18:01:47,862 WARN L170 areAnnotationChecker]: L996-3 has no Hoare annotation [2020-07-28 18:01:47,862 WARN L170 areAnnotationChecker]: L1011 has no Hoare annotation [2020-07-28 18:01:47,862 WARN L170 areAnnotationChecker]: L1006-2 has no Hoare annotation [2020-07-28 18:01:47,862 WARN L170 areAnnotationChecker]: L996-4 has no Hoare annotation [2020-07-28 18:01:47,863 WARN L170 areAnnotationChecker]: L996-4 has no Hoare annotation [2020-07-28 18:01:47,863 WARN L170 areAnnotationChecker]: L996-6 has no Hoare annotation [2020-07-28 18:01:47,863 WARN L170 areAnnotationChecker]: L996-6 has no Hoare annotation [2020-07-28 18:01:47,863 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 18:01:47,864 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 18:01:47,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 06:01:47 BoogieIcfgContainer [2020-07-28 18:01:47,866 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 18:01:47,867 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 18:01:47,867 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 18:01:47,868 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 18:01:47,869 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:01:46" (3/4) ... [2020-07-28 18:01:47,871 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 18:01:47,925 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 18:01:47,926 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 18:01:47,929 INFO L168 Benchmark]: Toolchain (without parser) took 2283.87 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.2 MB). Free memory was 960.2 MB in the beginning and 974.6 MB in the end (delta: -14.4 MB). Peak memory consumption was 87.9 MB. Max. memory is 11.5 GB. [2020-07-28 18:01:47,930 INFO L168 Benchmark]: CDTParser took 0.30 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 18:01:47,931 INFO L168 Benchmark]: CACSL2BoogieTranslator took 619.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.2 MB). Free memory was 954.9 MB in the beginning and 1.1 GB in the end (delta: -127.6 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2020-07-28 18:01:47,932 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.41 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. [2020-07-28 18:01:47,932 INFO L168 Benchmark]: Boogie Preprocessor took 35.62 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. [2020-07-28 18:01:47,933 INFO L168 Benchmark]: RCFGBuilder took 634.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.6 MB). Peak memory consumption was 39.6 MB. Max. memory is 11.5 GB. [2020-07-28 18:01:47,934 INFO L168 Benchmark]: TraceAbstraction took 866.84 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 981.4 MB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. [2020-07-28 18:01:47,935 INFO L168 Benchmark]: Witness Printer took 58.90 ms. Allocated memory is still 1.1 GB. Free memory was 981.4 MB in the beginning and 974.6 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2020-07-28 18:01:47,939 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 0.30 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 619.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.2 MB). Free memory was 954.9 MB in the beginning and 1.1 GB in the end (delta: -127.6 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 60.41 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 35.62 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 634.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.6 MB). Peak memory consumption was 39.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 866.84 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 981.4 MB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. * Witness Printer took 58.90 ms. Allocated memory is still 1.1 GB. Free memory was 981.4 MB in the beginning and 974.6 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 996]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L985] SLL* head = malloc(sizeof(SLL)); [L986] head->next = ((void*)0) [L987] COND TRUE __VERIFIER_nondet_int() [L987] head->data = 2 [L987] head->opt = malloc(sizeof(SLL)) [L987] EXPR head->opt [L987] head->opt->next = ((void*)0) [L988] SLL* x = head; [L990] COND FALSE !(__VERIFIER_nondet_int()) [L993] x = head [L994] COND TRUE x != ((void*)0) [L996] EXPR x->data [L996] EXPR x->data == 2 && x->opt == x [L996] EXPR x->opt [L996] EXPR x->data == 2 && x->opt == x [L996] COND TRUE !(x->data == 2 && x->opt == x) [L996] __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: 34 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, 23 NumberOfCodeBlocks, 23 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...