./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/alias_of_return_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_729af558-199d-43bc-a299-6c2f1bf0685d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_729af558-199d-43bc-a299-6c2f1bf0685d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_729af558-199d-43bc-a299-6c2f1bf0685d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_729af558-199d-43bc-a299-6c2f1bf0685d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/alias_of_return_2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_729af558-199d-43bc-a299-6c2f1bf0685d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_729af558-199d-43bc-a299-6c2f1bf0685d/bin/uautomizer --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 f9d70a2be78eceef3995b3661c64711e6d447045 ................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 22:54:10,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:54:10,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:54:10,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:54:10,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:54:10,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:54:10,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:54:10,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:54:10,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:54:10,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:54:10,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:54:10,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:54:10,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:54:10,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:54:10,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:54:10,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:54:10,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:54:10,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:54:10,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:54:10,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:54:10,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:54:10,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:54:10,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:54:10,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:54:10,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:54:10,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:54:10,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:54:10,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:54:10,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:54:10,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:54:10,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:54:10,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:54:10,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:54:10,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:54:10,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:54:10,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:54:10,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:54:10,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:54:10,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:54:10,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:54:10,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:54:10,523 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_729af558-199d-43bc-a299-6c2f1bf0685d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 22:54:10,536 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:54:10,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:54:10,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:54:10,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:54:10,538 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:54:10,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:54:10,538 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:54:10,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:54:10,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:54:10,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:54:10,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 22:54:10,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:54:10,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 22:54:10,540 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:54:10,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:54:10,541 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:54:10,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 22:54:10,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:54:10,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:54:10,542 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:54:10,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:54:10,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:54:10,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:54:10,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:54:10,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 22:54:10,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:54:10,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 22:54:10,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 22:54:10,544 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_729af558-199d-43bc-a299-6c2f1bf0685d/bin/uautomizer 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 -> f9d70a2be78eceef3995b3661c64711e6d447045 [2019-11-15 22:54:10,569 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:54:10,579 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:54:10,582 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:54:10,583 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:54:10,584 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:54:10,584 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_729af558-199d-43bc-a299-6c2f1bf0685d/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/alias_of_return_2.i [2019-11-15 22:54:10,637 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_729af558-199d-43bc-a299-6c2f1bf0685d/bin/uautomizer/data/f982131f8/6bc723b6ef9045e5894cdb49624a7937/FLAGc34c7a024 [2019-11-15 22:54:11,044 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:54:11,045 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_729af558-199d-43bc-a299-6c2f1bf0685d/sv-benchmarks/c/ldv-regression/alias_of_return_2.i [2019-11-15 22:54:11,050 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_729af558-199d-43bc-a299-6c2f1bf0685d/bin/uautomizer/data/f982131f8/6bc723b6ef9045e5894cdb49624a7937/FLAGc34c7a024 [2019-11-15 22:54:11,065 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_729af558-199d-43bc-a299-6c2f1bf0685d/bin/uautomizer/data/f982131f8/6bc723b6ef9045e5894cdb49624a7937 [2019-11-15 22:54:11,070 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:54:11,071 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:54:11,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:54:11,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:54:11,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:54:11,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:54:11" (1/1) ... [2019-11-15 22:54:11,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68468750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11, skipping insertion in model container [2019-11-15 22:54:11,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:54:11" (1/1) ... [2019-11-15 22:54:11,088 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:54:11,104 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:54:11,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:54:11,310 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:54:11,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:54:11,421 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:54:11,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11 WrapperNode [2019-11-15 22:54:11,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:54:11,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:54:11,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:54:11,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:54:11,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11" (1/1) ... [2019-11-15 22:54:11,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11" (1/1) ... [2019-11-15 22:54:11,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:54:11,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:54:11,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:54:11,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:54:11,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11" (1/1) ... [2019-11-15 22:54:11,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11" (1/1) ... [2019-11-15 22:54:11,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11" (1/1) ... [2019-11-15 22:54:11,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11" (1/1) ... [2019-11-15 22:54:11,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11" (1/1) ... [2019-11-15 22:54:11,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11" (1/1) ... [2019-11-15 22:54:11,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11" (1/1) ... [2019-11-15 22:54:11,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:54:11,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:54:11,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:54:11,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:54:11,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_729af558-199d-43bc-a299-6c2f1bf0685d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:54:11,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 22:54:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:54:11,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:54:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 22:54:11,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 22:54:11,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 22:54:11,718 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:54:11,719 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-15 22:54:11,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:54:11 BoogieIcfgContainer [2019-11-15 22:54:11,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:54:11,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:54:11,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:54:11,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:54:11,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:54:11" (1/3) ... [2019-11-15 22:54:11,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee945d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:54:11, skipping insertion in model container [2019-11-15 22:54:11,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:54:11" (2/3) ... [2019-11-15 22:54:11,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee945d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:54:11, skipping insertion in model container [2019-11-15 22:54:11,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:54:11" (3/3) ... [2019-11-15 22:54:11,727 INFO L109 eAbstractionObserver]: Analyzing ICFG alias_of_return_2.i [2019-11-15 22:54:11,736 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:54:11,742 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 22:54:11,752 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 22:54:11,773 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:54:11,773 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 22:54:11,773 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:54:11,773 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:54:11,774 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:54:11,774 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:54:11,774 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:54:11,774 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:54:11,787 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-15 22:54:11,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-15 22:54:11,792 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:54:11,793 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-15 22:54:11,795 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:54:11,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:54:11,800 INFO L82 PathProgramCache]: Analyzing trace with hash 889508713, now seen corresponding path program 1 times [2019-11-15 22:54:11,807 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:54:11,808 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243621009] [2019-11-15 22:54:11,808 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:54:11,808 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:54:11,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:54:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:54:12,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:54:12,005 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243621009] [2019-11-15 22:54:12,005 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:54:12,006 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 22:54:12,006 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918947053] [2019-11-15 22:54:12,010 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:54:12,010 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:54:12,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:54:12,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:54:12,024 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 5 states. [2019-11-15 22:54:12,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:54:12,119 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-11-15 22:54:12,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 22:54:12,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-11-15 22:54:12,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:54:12,127 INFO L225 Difference]: With dead ends: 15 [2019-11-15 22:54:12,127 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 22:54:12,129 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:54:12,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 22:54:12,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 22:54:12,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 22:54:12,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 22:54:12,147 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2019-11-15 22:54:12,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:54:12,147 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:54:12,147 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:54:12,147 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 22:54:12,147 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 22:54:12,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-15 22:54:12,177 INFO L443 ceAbstractionStarter]: For program point L34-1(line 34) no Hoare annotation was computed. [2019-11-15 22:54:12,177 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-15 22:54:12,178 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-15 22:54:12,178 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-15 22:54:12,178 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-11-15 22:54:12,178 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-15 22:54:12,178 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 35) no Hoare annotation was computed. [2019-11-15 22:54:12,179 INFO L439 ceAbstractionStarter]: At program point L17(lines 12 19) the Hoare annotation is: (and (= |ULTIMATE.start_main_~#a~0.offset| ULTIMATE.start_return_self_~p.offset) (= |ULTIMATE.start_main_~#a~0.offset| |ULTIMATE.start_return_self_#res.offset|) (= |ULTIMATE.start_main_~#a~0.base| ULTIMATE.start_return_self_~p.base) (= |ULTIMATE.start_return_self_#res.base| |ULTIMATE.start_main_~#a~0.base|)) [2019-11-15 22:54:12,179 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 18) no Hoare annotation was computed. [2019-11-15 22:54:12,179 INFO L443 ceAbstractionStarter]: For program point L8(line 8) no Hoare annotation was computed. [2019-11-15 22:54:12,179 INFO L443 ceAbstractionStarter]: For program point L34(line 34) no Hoare annotation was computed. [2019-11-15 22:54:12,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 10:54:12 BoogieIcfgContainer [2019-11-15 22:54:12,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 22:54:12,197 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:54:12,197 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:54:12,197 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:54:12,198 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:54:11" (3/4) ... [2019-11-15 22:54:12,206 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 22:54:12,214 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-15 22:54:12,214 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-15 22:54:12,215 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-15 22:54:12,238 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((a == p && a == \result) && a == p) && \result == a [2019-11-15 22:54:12,253 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_729af558-199d-43bc-a299-6c2f1bf0685d/bin/uautomizer/witness.graphml [2019-11-15 22:54:12,253 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:54:12,255 INFO L168 Benchmark]: Toolchain (without parser) took 1183.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -87.9 MB). Peak memory consumption was 707.5 kB. Max. memory is 11.5 GB. [2019-11-15 22:54:12,256 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:54:12,256 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -138.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-15 22:54:12,257 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.56 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:54:12,257 INFO L168 Benchmark]: Boogie Preprocessor took 18.19 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:54:12,258 INFO L168 Benchmark]: RCFGBuilder took 238.84 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-15 22:54:12,258 INFO L168 Benchmark]: TraceAbstraction took 473.72 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: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2019-11-15 22:54:12,258 INFO L168 Benchmark]: Witness Printer took 56.64 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:54:12,261 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 348.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -138.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.56 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. * Boogie Preprocessor took 18.19 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 238.84 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 473.72 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: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Witness Printer took 56.64 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: ((a == p && a == \result) && a == p) && \result == a - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 4 SDslu, 9 SDs, 0 SdLazy, 13 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 13 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 95 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...