./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fb14969d-0b1d-4040-8da2-eb68332ae78d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fb14969d-0b1d-4040-8da2-eb68332ae78d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fb14969d-0b1d-4040-8da2-eb68332ae78d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fb14969d-0b1d-4040-8da2-eb68332ae78d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test08.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fb14969d-0b1d-4040-8da2-eb68332ae78d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fb14969d-0b1d-4040-8da2-eb68332ae78d/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 0ea43f38c40f327c4a0a1045134d36b3760cf289 ............................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:49:28,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:49:28,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:49:28,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:49:28,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:49:28,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:49:28,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:49:28,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:49:28,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:49:28,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:49:28,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:49:28,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:49:28,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:49:28,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:49:28,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:49:28,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:49:28,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:49:28,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:49:28,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:49:28,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:49:28,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:49:28,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:49:28,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:49:28,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:49:28,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:49:28,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:49:28,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:49:28,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:49:28,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:49:28,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:49:28,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:49:28,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:49:28,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:49:28,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:49:28,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:49:28,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:49:28,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:49:28,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:49:28,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:49:28,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:49:28,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:49:28,644 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fb14969d-0b1d-4040-8da2-eb68332ae78d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:49:28,676 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:49:28,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:49:28,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:49:28,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:49:28,691 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:49:28,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:49:28,692 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:49:28,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:49:28,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:49:28,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:49:28,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:49:28,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:49:28,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:49:28,694 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:49:28,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:49:28,694 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:49:28,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:49:28,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:49:28,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:49:28,695 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:49:28,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:49:28,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:49:28,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:49:28,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:49:28,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:49:28,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:49:28,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:49:28,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:49:28,698 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_fb14969d-0b1d-4040-8da2-eb68332ae78d/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 -> 0ea43f38c40f327c4a0a1045134d36b3760cf289 [2019-11-25 08:49:28,873 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:49:28,887 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:49:28,890 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:49:28,892 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:49:28,893 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:49:28,893 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fb14969d-0b1d-4040-8da2-eb68332ae78d/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test08.c [2019-11-25 08:49:28,966 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fb14969d-0b1d-4040-8da2-eb68332ae78d/bin/uautomizer/data/6ba0fdf30/e3a8e4845a9c473ba2dbee6b66465ab6/FLAG02d9ef426 [2019-11-25 08:49:29,386 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:49:29,386 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fb14969d-0b1d-4040-8da2-eb68332ae78d/sv-benchmarks/c/ldv-regression/test08.c [2019-11-25 08:49:29,393 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fb14969d-0b1d-4040-8da2-eb68332ae78d/bin/uautomizer/data/6ba0fdf30/e3a8e4845a9c473ba2dbee6b66465ab6/FLAG02d9ef426 [2019-11-25 08:49:29,828 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fb14969d-0b1d-4040-8da2-eb68332ae78d/bin/uautomizer/data/6ba0fdf30/e3a8e4845a9c473ba2dbee6b66465ab6 [2019-11-25 08:49:29,831 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:49:29,832 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:49:29,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:49:29,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:49:29,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:49:29,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:49:29" (1/1) ... [2019-11-25 08:49:29,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@450a94ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:29, skipping insertion in model container [2019-11-25 08:49:29,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:49:29" (1/1) ... [2019-11-25 08:49:29,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:49:29,864 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:49:30,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:49:30,220 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:49:30,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:49:30,267 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:49:30,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:30 WrapperNode [2019-11-25 08:49:30,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:49:30,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:49:30,269 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:49:30,269 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:49:30,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:30" (1/1) ... [2019-11-25 08:49:30,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:30" (1/1) ... [2019-11-25 08:49:30,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:49:30,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:49:30,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:49:30,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:49:30,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:30" (1/1) ... [2019-11-25 08:49:30,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:30" (1/1) ... [2019-11-25 08:49:30,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:30" (1/1) ... [2019-11-25 08:49:30,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:30" (1/1) ... [2019-11-25 08:49:30,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:30" (1/1) ... [2019-11-25 08:49:30,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:30" (1/1) ... [2019-11-25 08:49:30,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:30" (1/1) ... [2019-11-25 08:49:30,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:49:30,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:49:30,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:49:30,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:49:30,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fb14969d-0b1d-4040-8da2-eb68332ae78d/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 [2019-11-25 08:49:30,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:49:30,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:49:30,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:49:30,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:49:30,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-25 08:49:30,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:49:30,744 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:49:30,745 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-25 08:49:30,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:30 BoogieIcfgContainer [2019-11-25 08:49:30,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:49:30,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:49:30,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:49:30,750 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:49:30,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:49:29" (1/3) ... [2019-11-25 08:49:30,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23069269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:49:30, skipping insertion in model container [2019-11-25 08:49:30,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:30" (2/3) ... [2019-11-25 08:49:30,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23069269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:49:30, skipping insertion in model container [2019-11-25 08:49:30,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:30" (3/3) ... [2019-11-25 08:49:30,753 INFO L109 eAbstractionObserver]: Analyzing ICFG test08.c [2019-11-25 08:49:30,764 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:49:30,770 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:49:30,797 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:49:30,822 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:49:30,822 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:49:30,822 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:49:30,823 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:49:30,823 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:49:30,823 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:49:30,823 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:49:30,823 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:49:30,844 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-25 08:49:30,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-25 08:49:30,852 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:30,853 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-25 08:49:30,853 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:30,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:30,860 INFO L82 PathProgramCache]: Analyzing trace with hash 889508715, now seen corresponding path program 1 times [2019-11-25 08:49:30,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:30,880 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032614619] [2019-11-25 08:49:30,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:31,065 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:49:31,066 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:49:31,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:49:31 BoogieIcfgContainer [2019-11-25 08:49:31,101 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:49:31,102 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:49:31,102 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:49:31,102 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:49:31,103 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:30" (3/4) ... [2019-11-25 08:49:31,106 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:49:31,154 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fb14969d-0b1d-4040-8da2-eb68332ae78d/bin/uautomizer/witness.graphml [2019-11-25 08:49:31,154 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:49:31,156 INFO L168 Benchmark]: Toolchain (without parser) took 1323.41 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -129.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:49:31,157 INFO L168 Benchmark]: CDTParser took 0.28 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. [2019-11-25 08:49:31,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 434.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -169.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:31,158 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.52 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. [2019-11-25 08:49:31,158 INFO L168 Benchmark]: Boogie Preprocessor took 38.69 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. [2019-11-25 08:49:31,159 INFO L168 Benchmark]: RCFGBuilder took 385.94 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:31,160 INFO L168 Benchmark]: TraceAbstraction took 354.45 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:31,160 INFO L168 Benchmark]: Witness Printer took 52.36 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:31,163 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 434.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -169.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.52 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 38.69 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 385.94 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 354.45 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 52.36 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 36]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L4] int a, b; [L5] int *p1, *p2; VAL [a={3:0}, b={2:0}, p1={0:0}, p2={0:0}] [L19] p1 = &a [L20] p2 = &b [L22] b = 1 [L23] a = 5 [L25] EXPR \read(a) [L25] a-- [L8] EXPR \read(*p1) [L8] EXPR \read(*p2) [L8] EXPR \read(a) [L8] int v = *p1 + *p2 - a; [L9] COND TRUE v == 1 [L10] p1 = p2 [L11] return v; VAL [a={3:0}, b={2:0}, p1={2:0}, p2={2:0}] [L27] a = f() [L29] EXPR \read(a) VAL [a={3:0}, b={2:0}, p1={2:0}, p2={2:0}] [L29] COND TRUE a && p1 == p2 [L36] __VERIFIER_error() VAL [a={3:0}, b={2:0}, p1={2:0}, p2={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...