./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test19_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c6d2fc5e-14fe-4eb5-ad42-e597e8348311/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c6d2fc5e-14fe-4eb5-ad42-e597e8348311/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c6d2fc5e-14fe-4eb5-ad42-e597e8348311/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c6d2fc5e-14fe-4eb5-ad42-e597e8348311/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test19_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c6d2fc5e-14fe-4eb5-ad42-e597e8348311/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c6d2fc5e-14fe-4eb5-ad42-e597e8348311/bin-2019/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 0c0446e0ab344184143837ac7165b5e517628f70 ............................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 16:21:13,523 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 16:21:13,524 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 16:21:13,530 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 16:21:13,530 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 16:21:13,531 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 16:21:13,531 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 16:21:13,532 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 16:21:13,533 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 16:21:13,533 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 16:21:13,534 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 16:21:13,534 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 16:21:13,535 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 16:21:13,535 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 16:21:13,536 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 16:21:13,536 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 16:21:13,536 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 16:21:13,537 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 16:21:13,538 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 16:21:13,539 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 16:21:13,539 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 16:21:13,540 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 16:21:13,541 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 16:21:13,541 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 16:21:13,541 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 16:21:13,542 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 16:21:13,542 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 16:21:13,543 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 16:21:13,543 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 16:21:13,544 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 16:21:13,544 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 16:21:13,544 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 16:21:13,544 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 16:21:13,545 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 16:21:13,545 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 16:21:13,546 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 16:21:13,546 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c6d2fc5e-14fe-4eb5-ad42-e597e8348311/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-08 16:21:13,553 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 16:21:13,553 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 16:21:13,554 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 16:21:13,554 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 16:21:13,554 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 16:21:13,554 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 16:21:13,554 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 16:21:13,554 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-08 16:21:13,554 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 16:21:13,555 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 16:21:13,555 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-08 16:21:13,555 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-08 16:21:13,555 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 16:21:13,555 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 16:21:13,555 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 16:21:13,556 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 16:21:13,556 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 16:21:13,556 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 16:21:13,556 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 16:21:13,556 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 16:21:13,556 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 16:21:13,556 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 16:21:13,556 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 16:21:13,557 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 16:21:13,557 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 16:21:13,557 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 16:21:13,557 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 16:21:13,557 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 16:21:13,557 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 16:21:13,557 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 16:21:13,558 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 16:21:13,558 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 16:21:13,558 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-08 16:21:13,558 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 16:21:13,558 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 16:21:13,558 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-08 16:21:13,558 INFO L133 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/working_dir_c6d2fc5e-14fe-4eb5-ad42-e597e8348311/bin-2019/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 -> 0c0446e0ab344184143837ac7165b5e517628f70 [2018-12-08 16:21:13,577 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 16:21:13,586 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 16:21:13,588 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 16:21:13,590 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 16:21:13,590 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 16:21:13,591 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c6d2fc5e-14fe-4eb5-ad42-e597e8348311/bin-2019/utaipan/../../sv-benchmarks/c/ldv-regression/test19_true-unreach-call_true-termination.c [2018-12-08 16:21:13,632 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c6d2fc5e-14fe-4eb5-ad42-e597e8348311/bin-2019/utaipan/data/d25c2f264/e090bb1097e84dffb838ebe5c0379e4c/FLAG53c74d4ea [2018-12-08 16:21:14,057 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 16:21:14,058 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c6d2fc5e-14fe-4eb5-ad42-e597e8348311/sv-benchmarks/c/ldv-regression/test19_true-unreach-call_true-termination.c [2018-12-08 16:21:14,061 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c6d2fc5e-14fe-4eb5-ad42-e597e8348311/bin-2019/utaipan/data/d25c2f264/e090bb1097e84dffb838ebe5c0379e4c/FLAG53c74d4ea [2018-12-08 16:21:14,071 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c6d2fc5e-14fe-4eb5-ad42-e597e8348311/bin-2019/utaipan/data/d25c2f264/e090bb1097e84dffb838ebe5c0379e4c [2018-12-08 16:21:14,073 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 16:21:14,074 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 16:21:14,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 16:21:14,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 16:21:14,077 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 16:21:14,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 04:21:14" (1/1) ... [2018-12-08 16:21:14,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@409ee820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:21:14, skipping insertion in model container [2018-12-08 16:21:14,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 04:21:14" (1/1) ... [2018-12-08 16:21:14,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 16:21:14,094 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 16:21:14,185 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 16:21:14,192 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 16:21:14,201 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 16:21:14,210 INFO L195 MainTranslator]: Completed translation [2018-12-08 16:21:14,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:21:14 WrapperNode [2018-12-08 16:21:14,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 16:21:14,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 16:21:14,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 16:21:14,211 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 16:21:14,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:21:14" (1/1) ... [2018-12-08 16:21:14,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:21:14" (1/1) ... [2018-12-08 16:21:14,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 16:21:14,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 16:21:14,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 16:21:14,225 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 16:21:14,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:21:14" (1/1) ... [2018-12-08 16:21:14,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:21:14" (1/1) ... [2018-12-08 16:21:14,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:21:14" (1/1) ... [2018-12-08 16:21:14,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:21:14" (1/1) ... [2018-12-08 16:21:14,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:21:14" (1/1) ... [2018-12-08 16:21:14,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:21:14" (1/1) ... [2018-12-08 16:21:14,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:21:14" (1/1) ... [2018-12-08 16:21:14,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 16:21:14,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 16:21:14,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 16:21:14,239 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 16:21:14,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:21:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c6d2fc5e-14fe-4eb5-ad42-e597e8348311/bin-2019/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 [2018-12-08 16:21:14,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-08 16:21:14,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-08 16:21:14,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-12-08 16:21:14,306 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 16:21:14,306 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 16:21:14,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-08 16:21:14,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 16:21:14,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 16:21:14,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 16:21:14,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 16:21:14,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 16:21:14,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 16:21:14,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 16:21:14,307 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2018-12-08 16:21:14,307 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2018-12-08 16:21:14,404 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 16:21:14,404 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-08 16:21:14,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 04:21:14 BoogieIcfgContainer [2018-12-08 16:21:14,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 16:21:14,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 16:21:14,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 16:21:14,406 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 16:21:14,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 04:21:14" (1/3) ... [2018-12-08 16:21:14,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f29e494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 04:21:14, skipping insertion in model container [2018-12-08 16:21:14,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:21:14" (2/3) ... [2018-12-08 16:21:14,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f29e494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 04:21:14, skipping insertion in model container [2018-12-08 16:21:14,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 04:21:14" (3/3) ... [2018-12-08 16:21:14,408 INFO L112 eAbstractionObserver]: Analyzing ICFG test19_true-unreach-call_true-termination.c [2018-12-08 16:21:14,414 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 16:21:14,418 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 16:21:14,427 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 16:21:14,444 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 16:21:14,444 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 16:21:14,444 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 16:21:14,444 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 16:21:14,444 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 16:21:14,444 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 16:21:14,444 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 16:21:14,445 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 16:21:14,453 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-08 16:21:14,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-08 16:21:14,456 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:21:14,457 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:21:14,458 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:21:14,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:21:14,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1573149608, now seen corresponding path program 1 times [2018-12-08 16:21:14,462 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:21:14,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:21:14,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:21:14,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:21:14,489 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:21:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:21:14,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:21:14,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 16:21:14,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-08 16:21:14,675 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:21:14,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-08 16:21:14,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-08 16:21:14,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-08 16:21:14,687 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 7 states. [2018-12-08 16:21:14,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:21:14,777 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2018-12-08 16:21:14,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-08 16:21:14,778 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-12-08 16:21:14,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:21:14,783 INFO L225 Difference]: With dead ends: 22 [2018-12-08 16:21:14,784 INFO L226 Difference]: Without dead ends: 0 [2018-12-08 16:21:14,786 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-12-08 16:21:14,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-08 16:21:14,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-08 16:21:14,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-08 16:21:14,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 16:21:14,802 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-12-08 16:21:14,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:21:14,802 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 16:21:14,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-08 16:21:14,802 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-08 16:21:14,802 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-08 16:21:14,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-08 16:21:14,844 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-08 16:21:14,844 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-08 16:21:14,844 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-08 16:21:14,844 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-08 16:21:14,844 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-08 16:21:14,844 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-08 16:21:14,844 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-08 16:21:14,844 INFO L444 ceAbstractionStarter]: At program point L17(lines 11 24) the Hoare annotation is: false [2018-12-08 16:21:14,845 INFO L448 ceAbstractionStarter]: For program point L16(lines 16 18) no Hoare annotation was computed. [2018-12-08 16:21:14,845 INFO L444 ceAbstractionStarter]: At program point L15(line 15) the Hoare annotation is: (and (not (= |main_~#a~0.base| |main_~#b~0.base|)) (= (select (select |#memory_$Pointer$.base| |main_~#pa~1.base|) |main_~#pa~1.offset|) |main_~#a~0.base|) (= |main_~#b~0.base| (select (select |#memory_$Pointer$.base| |main_~#pb~1.base|) |main_~#pb~1.offset|)) (= |main_~#a~0.offset| (select (select |#memory_$Pointer$.offset| |main_~#pa~1.base|) |main_~#pa~1.offset|)) (= |main_~#b~0.offset| (select (select |#memory_$Pointer$.offset| |main_~#pb~1.base|) |main_~#pb~1.offset|)) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2018-12-08 16:21:14,845 INFO L448 ceAbstractionStarter]: For program point L15-1(line 15) no Hoare annotation was computed. [2018-12-08 16:21:14,845 INFO L444 ceAbstractionStarter]: At program point mainENTRY(lines 11 24) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2018-12-08 16:21:14,845 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 11 24) no Hoare annotation was computed. [2018-12-08 16:21:14,845 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 22) no Hoare annotation was computed. [2018-12-08 16:21:14,845 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 24) no Hoare annotation was computed. [2018-12-08 16:21:14,846 INFO L448 ceAbstractionStarter]: For program point assignEXIT(lines 5 9) no Hoare annotation was computed. [2018-12-08 16:21:14,846 INFO L444 ceAbstractionStarter]: At program point assignENTRY(lines 5 9) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2018-12-08 16:21:14,846 INFO L448 ceAbstractionStarter]: For program point assignFINAL(lines 5 9) no Hoare annotation was computed. [2018-12-08 16:21:14,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 04:21:14 BoogieIcfgContainer [2018-12-08 16:21:14,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 16:21:14,850 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 16:21:14,850 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 16:21:14,850 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 16:21:14,850 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 04:21:14" (3/4) ... [2018-12-08 16:21:14,852 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-08 16:21:14,856 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-08 16:21:14,856 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-08 16:21:14,856 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assign [2018-12-08 16:21:14,859 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-12-08 16:21:14,859 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-08 16:21:14,859 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-08 16:21:14,884 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c6d2fc5e-14fe-4eb5-ad42-e597e8348311/bin-2019/utaipan/witness.graphml [2018-12-08 16:21:14,884 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 16:21:14,885 INFO L168 Benchmark]: Toolchain (without parser) took 811.24 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 955.2 MB in the beginning and 1.0 GB in the end (delta: -87.1 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. [2018-12-08 16:21:14,886 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 976.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 16:21:14,886 INFO L168 Benchmark]: CACSL2BoogieTranslator took 135.67 ms. Allocated memory is still 1.0 GB. Free memory was 955.2 MB in the beginning and 944.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 16:21:14,886 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.01 ms. Allocated memory is still 1.0 GB. Free memory is still 944.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 16:21:14,886 INFO L168 Benchmark]: Boogie Preprocessor took 13.34 ms. Allocated memory is still 1.0 GB. Free memory was 944.5 MB in the beginning and 939.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-08 16:21:14,887 INFO L168 Benchmark]: RCFGBuilder took 165.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -159.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-12-08 16:21:14,887 INFO L168 Benchmark]: TraceAbstraction took 444.78 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: 56.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 11.5 GB. [2018-12-08 16:21:14,887 INFO L168 Benchmark]: Witness Printer took 34.62 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. [2018-12-08 16:21:14,888 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 976.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 135.67 ms. Allocated memory is still 1.0 GB. Free memory was 955.2 MB in the beginning and 944.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.01 ms. Allocated memory is still 1.0 GB. Free memory is still 944.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.34 ms. Allocated memory is still 1.0 GB. Free memory was 944.5 MB in the beginning and 939.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 165.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -159.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 444.78 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: 56.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 11.5 GB. * Witness Printer took 34.62 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: 22]: 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: 11]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 0.4s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10 SDtfs, 4 SDslu, 27 SDs, 0 SdLazy, 41 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 66 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 9 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 2028 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...