./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/dll-circular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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-circular-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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e585ced56eb20cb86f32939eb5fca0773c487edc ....................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-9a8b2e8 [2020-10-20 00:44:38,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:44:38,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:44:38,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:44:38,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:44:38,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:44:38,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:44:38,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:44:38,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:44:38,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:44:38,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:44:38,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:44:38,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:44:38,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:44:38,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:44:38,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:44:38,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:44:38,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:44:38,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:44:38,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:44:38,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:44:38,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:44:38,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:44:38,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:44:38,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:44:38,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:44:38,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:44:38,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:44:38,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:44:38,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:44:38,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:44:38,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:44:38,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:44:38,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:44:38,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:44:38,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:44:38,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:44:38,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:44:38,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:44:38,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:44:38,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:44:38,311 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:44:38,335 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:44:38,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:44:38,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:44:38,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:44:38,337 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:44:38,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:44:38,338 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:44:38,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:44:38,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:44:38,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:44:38,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:44:38,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:44:38,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:44:38,339 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:44:38,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:44:38,340 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:44:38,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:44:38,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:44:38,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:44:38,341 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:44:38,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:44:38,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:44:38,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:44:38,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:44:38,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:44:38,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:44:38,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:44:38,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:44:38,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:44:38,343 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(reach_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 -> e585ced56eb20cb86f32939eb5fca0773c487edc [2020-10-20 00:44:38,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:44:38,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:44:38,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:44:38,577 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:44:38,578 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:44:38,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-circular-1.i [2020-10-20 00:44:38,660 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f0d7ec12/08fb6bb78f004359a0d4d1b76fe704f0/FLAG50a67d828 [2020-10-20 00:44:39,214 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:44:39,215 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-circular-1.i [2020-10-20 00:44:39,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f0d7ec12/08fb6bb78f004359a0d4d1b76fe704f0/FLAG50a67d828 [2020-10-20 00:44:39,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f0d7ec12/08fb6bb78f004359a0d4d1b76fe704f0 [2020-10-20 00:44:39,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:44:39,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:44:39,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:44:39,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:44:39,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:44:39,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:44:39" (1/1) ... [2020-10-20 00:44:39,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7179b3dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:39, skipping insertion in model container [2020-10-20 00:44:39,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:44:39" (1/1) ... [2020-10-20 00:44:39,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:44:39,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:44:40,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:44:40,079 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:44:40,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:44:40,233 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:44:40,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:40 WrapperNode [2020-10-20 00:44:40,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:44:40,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:44:40,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:44:40,237 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:44:40,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:40" (1/1) ... [2020-10-20 00:44:40,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:40" (1/1) ... [2020-10-20 00:44:40,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:44:40,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:44:40,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:44:40,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:44:40,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:40" (1/1) ... [2020-10-20 00:44:40,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:40" (1/1) ... [2020-10-20 00:44:40,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:40" (1/1) ... [2020-10-20 00:44:40,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:40" (1/1) ... [2020-10-20 00:44:40,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:40" (1/1) ... [2020-10-20 00:44:40,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:40" (1/1) ... [2020-10-20 00:44:40,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:40" (1/1) ... [2020-10-20 00:44:40,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:44:40,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:44:40,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:44:40,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:44:40,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:40" (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 [2020-10-20 00:44:40,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:44:40,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:44:40,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 00:44:40,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 00:44:40,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:44:40,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 00:44:40,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:44:40,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:44:40,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:44:40,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:44:40,793 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:44:40,794 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-10-20 00:44:40,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:44:40 BoogieIcfgContainer [2020-10-20 00:44:40,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:44:40,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:44:40,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:44:40,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:44:40,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:44:39" (1/3) ... [2020-10-20 00:44:40,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d940bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:44:40, skipping insertion in model container [2020-10-20 00:44:40,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:40" (2/3) ... [2020-10-20 00:44:40,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d940bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:44:40, skipping insertion in model container [2020-10-20 00:44:40,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:44:40" (3/3) ... [2020-10-20 00:44:40,805 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-circular-1.i [2020-10-20 00:44:40,820 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:44:40,828 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 00:44:40,847 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 00:44:40,874 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:44:40,874 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:44:40,874 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:44:40,874 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:44:40,875 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:44:40,875 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:44:40,875 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:44:40,875 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:44:40,892 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-20 00:44:40,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 00:44:40,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:44:40,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:44:40,901 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:44:40,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:44:40,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1854531709, now seen corresponding path program 1 times [2020-10-20 00:44:40,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:44:40,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835545112] [2020-10-20 00:44:40,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:44:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:44:41,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:44:41,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835545112] [2020-10-20 00:44:41,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:44:41,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:44:41,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173329533] [2020-10-20 00:44:41,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:44:41,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:44:41,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:44:41,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:44:41,108 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-10-20 00:44:41,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:44:41,132 INFO L93 Difference]: Finished difference Result 73 states and 115 transitions. [2020-10-20 00:44:41,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:44:41,133 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-10-20 00:44:41,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:44:41,143 INFO L225 Difference]: With dead ends: 73 [2020-10-20 00:44:41,143 INFO L226 Difference]: Without dead ends: 29 [2020-10-20 00:44:41,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:44:41,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-20 00:44:41,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-20 00:44:41,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-20 00:44:41,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-20 00:44:41,188 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 7 [2020-10-20 00:44:41,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:44:41,188 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-20 00:44:41,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:44:41,188 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-20 00:44:41,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:44:41,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:44:41,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:44:41,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:44:41,190 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:44:41,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:44:41,190 INFO L82 PathProgramCache]: Analyzing trace with hash 179014541, now seen corresponding path program 1 times [2020-10-20 00:44:41,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:44:41,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359570950] [2020-10-20 00:44:41,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:44:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:44:41,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:44:41,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359570950] [2020-10-20 00:44:41,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:44:41,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 00:44:41,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516429580] [2020-10-20 00:44:41,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:44:41,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:44:41,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:44:41,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:44:41,445 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 4 states. [2020-10-20 00:44:41,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:44:41,579 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2020-10-20 00:44:41,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:44:41,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-20 00:44:41,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:44:41,583 INFO L225 Difference]: With dead ends: 47 [2020-10-20 00:44:41,583 INFO L226 Difference]: Without dead ends: 41 [2020-10-20 00:44:41,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:44:41,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-20 00:44:41,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2020-10-20 00:44:41,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 00:44:41,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-10-20 00:44:41,600 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 8 [2020-10-20 00:44:41,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:44:41,601 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-10-20 00:44:41,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:44:41,601 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-10-20 00:44:41,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:44:41,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:44:41,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:44:41,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:44:41,605 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:44:41,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:44:41,606 INFO L82 PathProgramCache]: Analyzing trace with hash 432810643, now seen corresponding path program 1 times [2020-10-20 00:44:41,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:44:41,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844509872] [2020-10-20 00:44:41,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:44:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:44:41,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:44:41,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844509872] [2020-10-20 00:44:41,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:44:41,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:44:41,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661434837] [2020-10-20 00:44:41,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:44:41,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:44:41,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:44:41,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:44:41,701 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 3 states. [2020-10-20 00:44:41,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:44:41,728 INFO L93 Difference]: Finished difference Result 77 states and 92 transitions. [2020-10-20 00:44:41,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:44:41,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-20 00:44:41,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:44:41,731 INFO L225 Difference]: With dead ends: 77 [2020-10-20 00:44:41,732 INFO L226 Difference]: Without dead ends: 53 [2020-10-20 00:44:41,732 INFO L677 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 [2020-10-20 00:44:41,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-20 00:44:41,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 37. [2020-10-20 00:44:41,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-20 00:44:41,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2020-10-20 00:44:41,740 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 11 [2020-10-20 00:44:41,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:44:41,741 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2020-10-20 00:44:41,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:44:41,741 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2020-10-20 00:44:41,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 00:44:41,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:44:41,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:44:41,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 00:44:41,742 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:44:41,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:44:41,743 INFO L82 PathProgramCache]: Analyzing trace with hash -660271766, now seen corresponding path program 1 times [2020-10-20 00:44:41,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:44:41,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141321641] [2020-10-20 00:44:41,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:44:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:44:41,785 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:44:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:44:41,829 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:44:41,857 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:44:41,857 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:44:41,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 00:44:41,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:44:41 BoogieIcfgContainer [2020-10-20 00:44:41,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:44:41,894 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:44:41,894 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:44:41,894 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:44:41,895 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:44:40" (3/4) ... [2020-10-20 00:44:41,897 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:44:41,951 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:44:41,951 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:44:41,954 INFO L168 Benchmark]: Toolchain (without parser) took 2395.75 ms. Allocated memory was 38.8 MB in the beginning and 48.2 MB in the end (delta: 9.4 MB). Free memory was 15.7 MB in the beginning and 23.0 MB in the end (delta: -7.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:44:41,955 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 30.4 MB. Free memory was 5.6 MB in the beginning and 5.6 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:44:41,956 INFO L168 Benchmark]: CACSL2BoogieTranslator took 671.65 ms. Allocated memory was 38.8 MB in the beginning and 41.4 MB in the end (delta: 2.6 MB). Free memory was 14.8 MB in the beginning and 16.2 MB in the end (delta: -1.4 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:44:41,957 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.74 ms. Allocated memory is still 41.4 MB. Free memory was 16.2 MB in the beginning and 14.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:44:41,957 INFO L168 Benchmark]: Boogie Preprocessor took 37.22 ms. Allocated memory is still 41.4 MB. Free memory was 14.1 MB in the beginning and 12.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:44:41,958 INFO L168 Benchmark]: RCFGBuilder took 458.58 ms. Allocated memory was 41.4 MB in the beginning and 44.0 MB in the end (delta: 2.6 MB). Free memory was 12.2 MB in the beginning and 21.4 MB in the end (delta: -9.2 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:44:41,959 INFO L168 Benchmark]: TraceAbstraction took 1095.82 ms. Allocated memory was 44.0 MB in the beginning and 48.2 MB in the end (delta: 4.2 MB). Free memory was 20.8 MB in the beginning and 25.7 MB in the end (delta: -4.9 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:44:41,960 INFO L168 Benchmark]: Witness Printer took 57.74 ms. Allocated memory is still 48.2 MB. Free memory was 25.7 MB in the beginning and 23.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:44:41,965 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 30.4 MB. Free memory was 5.6 MB in the beginning and 5.6 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 671.65 ms. Allocated memory was 38.8 MB in the beginning and 41.4 MB in the end (delta: 2.6 MB). Free memory was 14.8 MB in the beginning and 16.2 MB in the end (delta: -1.4 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 63.74 ms. Allocated memory is still 41.4 MB. Free memory was 16.2 MB in the beginning and 14.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 37.22 ms. Allocated memory is still 41.4 MB. Free memory was 14.1 MB in the beginning and 12.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 458.58 ms. Allocated memory was 41.4 MB in the beginning and 44.0 MB in the end (delta: 2.6 MB). Free memory was 12.2 MB in the beginning and 21.4 MB in the end (delta: -9.2 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1095.82 ms. Allocated memory was 44.0 MB in the beginning and 48.2 MB in the end (delta: 4.2 MB). Free memory was 20.8 MB in the beginning and 25.7 MB in the end (delta: -4.9 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 57.74 ms. Allocated memory is still 48.2 MB. Free memory was 25.7 MB in the beginning and 23.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 985]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = head [L999] head->data = 0 [L1001] SLL* x = head; [L1002] int state = 1; [L1005] COND FALSE !(__VERIFIER_nondet_int()) [L1027] x->data = state [L1029] EXPR head->next [L1029] x = head->next [L1030] COND FALSE !(!(((void*)0) != x)) [L1032] EXPR x->data [L1032] COND TRUE x->data != 0 [L1034] EXPR x->next [L1034] EXPR x->next->data [L1034] EXPR x->next->data != 0 && x->data > x->next->data [L1034] EXPR x->data [L1034] EXPR x->next [L1034] EXPR x->next->data [L1034] EXPR x->next->data != 0 && x->data > x->next->data [L1034] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L985] COND FALSE !(0) [L985] __assert_fail ("0", "dll-circular-1.c", 14, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 92 SDtfs, 47 SDslu, 55 SDs, 0 SdLazy, 35 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 27 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 643 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...