./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/just_assert.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e2092476-dea9-4cb7-933c-bc4511efce23/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e2092476-dea9-4cb7-933c-bc4511efce23/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e2092476-dea9-4cb7-933c-bc4511efce23/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e2092476-dea9-4cb7-933c-bc4511efce23/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/just_assert.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e2092476-dea9-4cb7-933c-bc4511efce23/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e2092476-dea9-4cb7-933c-bc4511efce23/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ff66b083d022919cb3a5ea434b115d71e7ae4f36 ................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 17:04:14,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:04:14,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:04:14,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:04:14,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:04:14,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:04:14,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:04:14,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:04:14,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:04:14,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:04:14,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:04:14,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:04:14,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:04:14,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:04:14,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:04:14,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:04:14,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:04:14,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:04:14,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:04:14,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:04:14,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:04:14,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:04:14,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:04:14,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:04:14,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:04:14,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:04:14,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:04:14,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:04:14,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:04:14,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:04:14,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:04:14,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:04:14,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:04:14,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:04:14,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:04:14,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:04:14,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:04:14,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:04:14,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:04:14,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:04:14,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:04:14,569 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e2092476-dea9-4cb7-933c-bc4511efce23/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 17:04:14,581 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:04:14,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:04:14,582 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 17:04:14,582 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 17:04:14,582 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 17:04:14,583 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 17:04:14,583 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 17:04:14,583 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 17:04:14,583 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 17:04:14,583 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 17:04:14,583 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 17:04:14,583 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 17:04:14,583 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 17:04:14,584 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 17:04:14,584 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 17:04:14,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:04:14,584 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:04:14,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:04:14,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:04:14,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:04:14,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:04:14,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:04:14,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:04:14,585 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 17:04:14,585 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:04:14,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:04:14,585 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:04:14,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:04:14,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:04:14,586 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:04:14,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:04:14,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:04:14,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:04:14,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:04:14,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:04:14,586 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 17:04:14,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 17:04:14,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:04:14,587 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:04:14,587 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 17:04:14,587 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_e2092476-dea9-4cb7-933c-bc4511efce23/bin/utaipan 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 -> Taipan 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 -> ff66b083d022919cb3a5ea434b115d71e7ae4f36 [2019-12-07 17:04:14,685 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:04:14,694 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:04:14,697 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:04:14,698 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:04:14,699 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:04:14,699 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e2092476-dea9-4cb7-933c-bc4511efce23/bin/utaipan/../../sv-benchmarks/c/ldv-regression/just_assert.i [2019-12-07 17:04:14,747 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e2092476-dea9-4cb7-933c-bc4511efce23/bin/utaipan/data/2d2e19a3b/eaeccb6d5ef14135a291a07a48805d6d/FLAGbdb251680 [2019-12-07 17:04:15,063 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:04:15,063 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e2092476-dea9-4cb7-933c-bc4511efce23/sv-benchmarks/c/ldv-regression/just_assert.i [2019-12-07 17:04:15,066 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e2092476-dea9-4cb7-933c-bc4511efce23/bin/utaipan/data/2d2e19a3b/eaeccb6d5ef14135a291a07a48805d6d/FLAGbdb251680 [2019-12-07 17:04:15,075 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e2092476-dea9-4cb7-933c-bc4511efce23/bin/utaipan/data/2d2e19a3b/eaeccb6d5ef14135a291a07a48805d6d [2019-12-07 17:04:15,077 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:04:15,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:04:15,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:04:15,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:04:15,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:04:15,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:04:15" (1/1) ... [2019-12-07 17:04:15,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4211947e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:04:15, skipping insertion in model container [2019-12-07 17:04:15,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:04:15" (1/1) ... [2019-12-07 17:04:15,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:04:15,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:04:15,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:04:15,187 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:04:15,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:04:15,236 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:04:15,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:04:15 WrapperNode [2019-12-07 17:04:15,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:04:15,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:04:15,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:04:15,237 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:04:15,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:04:15" (1/1) ... [2019-12-07 17:04:15,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:04:15" (1/1) ... [2019-12-07 17:04:15,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:04:15,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:04:15,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:04:15,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:04:15,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:04:15" (1/1) ... [2019-12-07 17:04:15,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:04:15" (1/1) ... [2019-12-07 17:04:15,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:04:15" (1/1) ... [2019-12-07 17:04:15,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:04:15" (1/1) ... [2019-12-07 17:04:15,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:04:15" (1/1) ... [2019-12-07 17:04:15,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:04:15" (1/1) ... [2019-12-07 17:04:15,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:04:15" (1/1) ... [2019-12-07 17:04:15,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:04:15,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:04:15,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:04:15,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:04:15,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:04:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e2092476-dea9-4cb7-933c-bc4511efce23/bin/utaipan/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 [2019-12-07 17:04:15,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:04:15,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:04:15,390 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:04:15,391 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 17:04:15,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:04:15 BoogieIcfgContainer [2019-12-07 17:04:15,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:04:15,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:04:15,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:04:15,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:04:15,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:04:15" (1/3) ... [2019-12-07 17:04:15,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225026cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:04:15, skipping insertion in model container [2019-12-07 17:04:15,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:04:15" (2/3) ... [2019-12-07 17:04:15,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225026cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:04:15, skipping insertion in model container [2019-12-07 17:04:15,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:04:15" (3/3) ... [2019-12-07 17:04:15,396 INFO L109 eAbstractionObserver]: Analyzing ICFG just_assert.i [2019-12-07 17:04:15,402 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:04:15,407 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 17:04:15,417 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 17:04:15,433 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:04:15,433 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:04:15,434 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:04:15,434 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:04:15,434 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:04:15,434 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:04:15,434 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:04:15,434 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:04:15,442 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-12-07 17:04:15,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 17:04:15,446 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:04:15,446 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 17:04:15,446 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:04:15,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:04:15,450 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2019-12-07 17:04:15,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 17:04:15,456 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347189971] [2019-12-07 17:04:15,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:04:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:04:15,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:04:15,517 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347189971] [2019-12-07 17:04:15,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:04:15,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 17:04:15,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163078456] [2019-12-07 17:04:15,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 17:04:15,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 17:04:15,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 17:04:15,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 17:04:15,531 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 2 states. [2019-12-07 17:04:15,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:04:15,544 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2019-12-07 17:04:15,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 17:04:15,545 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 3 [2019-12-07 17:04:15,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:04:15,549 INFO L225 Difference]: With dead ends: 8 [2019-12-07 17:04:15,549 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 17:04:15,552 INFO L630 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 [2019-12-07 17:04:15,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 17:04:15,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 17:04:15,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 17:04:15,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 17:04:15,568 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2019-12-07 17:04:15,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:04:15,568 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:04:15,568 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 17:04:15,568 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 17:04:15,568 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 17:04:15,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 17:04:15,580 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 17:04:15,580 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 17:04:15,580 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-12-07 17:04:15,580 INFO L246 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2019-12-07 17:04:15,580 INFO L246 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2019-12-07 17:04:15,581 INFO L249 CegarLoopResult]: At program point L7-2(lines 7 9) the Hoare annotation is: true [2019-12-07 17:04:15,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:04:15 BoogieIcfgContainer [2019-12-07 17:04:15,587 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:04:15,588 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:04:15,588 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:04:15,588 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:04:15,588 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:04:15" (3/4) ... [2019-12-07 17:04:15,590 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 17:04:15,596 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 17:04:15,597 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 17:04:15,597 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 17:04:15,625 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e2092476-dea9-4cb7-933c-bc4511efce23/bin/utaipan/witness.graphml [2019-12-07 17:04:15,625 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:04:15,627 INFO L168 Benchmark]: Toolchain (without parser) took 548.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -114.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:04:15,627 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:04:15,628 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -147.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-12-07 17:04:15,628 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.59 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. [2019-12-07 17:04:15,628 INFO L168 Benchmark]: Boogie Preprocessor took 13.44 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. [2019-12-07 17:04:15,629 INFO L168 Benchmark]: RCFGBuilder took 118.17 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: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 11.5 GB. [2019-12-07 17:04:15,629 INFO L168 Benchmark]: TraceAbstraction took 195.33 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: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-12-07 17:04:15,629 INFO L168 Benchmark]: Witness Printer took 37.77 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. [2019-12-07 17:04:15,631 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 157.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.8 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -147.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.59 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 13.44 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 118.17 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: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 195.33 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: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Witness Printer took 37.77 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. * 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: 7]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Result: SAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 3 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred 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, 2 NumberOfFragments, 1 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, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 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...