./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector-regression/signextension_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_cafb965f-0bdd-4ac0-8d13-b3a92f64cfdd/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cafb965f-0bdd-4ac0-8d13-b3a92f64cfdd/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cafb965f-0bdd-4ac0-8d13-b3a92f64cfdd/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cafb965f-0bdd-4ac0-8d13-b3a92f64cfdd/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector-regression/signextension_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_cafb965f-0bdd-4ac0-8d13-b3a92f64cfdd/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cafb965f-0bdd-4ac0-8d13-b3a92f64cfdd/bin-2019/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 f4433bb60ef050acea7db74543af3a05ddf5a434 .......................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 10:33:48,574 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 10:33:48,575 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 10:33:48,584 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 10:33:48,584 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 10:33:48,585 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 10:33:48,586 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 10:33:48,587 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 10:33:48,588 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 10:33:48,589 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 10:33:48,590 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 10:33:48,590 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 10:33:48,591 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 10:33:48,591 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 10:33:48,592 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 10:33:48,593 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 10:33:48,594 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 10:33:48,595 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 10:33:48,597 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 10:33:48,598 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 10:33:48,599 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 10:33:48,600 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 10:33:48,601 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 10:33:48,602 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 10:33:48,602 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 10:33:48,603 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 10:33:48,603 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 10:33:48,604 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 10:33:48,605 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 10:33:48,605 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 10:33:48,606 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 10:33:48,606 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 10:33:48,606 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 10:33:48,606 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 10:33:48,607 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 10:33:48,608 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 10:33:48,608 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cafb965f-0bdd-4ac0-8d13-b3a92f64cfdd/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 10:33:48,619 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 10:33:48,619 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 10:33:48,619 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 10:33:48,620 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 10:33:48,620 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 10:33:48,620 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 10:33:48,620 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 10:33:48,621 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 10:33:48,621 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 10:33:48,621 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 10:33:48,621 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 10:33:48,621 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 10:33:48,621 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 10:33:48,622 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 10:33:48,622 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 10:33:48,622 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 10:33:48,622 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 10:33:48,622 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 10:33:48,622 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 10:33:48,623 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 10:33:48,623 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 10:33:48,623 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 10:33:48,623 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 10:33:48,623 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 10:33:48,624 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 10:33:48,624 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 10:33:48,624 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 10:33:48,624 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 10:33:48,624 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 10:33:48,624 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 10:33:48,624 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_cafb965f-0bdd-4ac0-8d13-b3a92f64cfdd/bin-2019/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 -> f4433bb60ef050acea7db74543af3a05ddf5a434 [2018-11-28 10:33:48,650 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 10:33:48,659 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 10:33:48,661 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 10:33:48,662 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 10:33:48,663 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 10:33:48,663 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cafb965f-0bdd-4ac0-8d13-b3a92f64cfdd/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector-regression/signextension_true-unreach-call_true-termination.c [2018-11-28 10:33:48,709 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cafb965f-0bdd-4ac0-8d13-b3a92f64cfdd/bin-2019/uautomizer/data/116045e3c/ae46a5a00b694f4c8b398918b0bec7d3/FLAG00c17e89c [2018-11-28 10:33:49,036 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 10:33:49,037 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cafb965f-0bdd-4ac0-8d13-b3a92f64cfdd/sv-benchmarks/c/bitvector-regression/signextension_true-unreach-call_true-termination.c [2018-11-28 10:33:49,041 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cafb965f-0bdd-4ac0-8d13-b3a92f64cfdd/bin-2019/uautomizer/data/116045e3c/ae46a5a00b694f4c8b398918b0bec7d3/FLAG00c17e89c [2018-11-28 10:33:49,052 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cafb965f-0bdd-4ac0-8d13-b3a92f64cfdd/bin-2019/uautomizer/data/116045e3c/ae46a5a00b694f4c8b398918b0bec7d3 [2018-11-28 10:33:49,054 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 10:33:49,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 10:33:49,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 10:33:49,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 10:33:49,059 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 10:33:49,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:33:49" (1/1) ... [2018-11-28 10:33:49,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68802a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:49, skipping insertion in model container [2018-11-28 10:33:49,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:33:49" (1/1) ... [2018-11-28 10:33:49,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 10:33:49,081 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 10:33:49,184 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 10:33:49,188 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 10:33:49,199 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 10:33:49,209 INFO L195 MainTranslator]: Completed translation [2018-11-28 10:33:49,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:49 WrapperNode [2018-11-28 10:33:49,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 10:33:49,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 10:33:49,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 10:33:49,210 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 10:33:49,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:49" (1/1) ... [2018-11-28 10:33:49,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:49" (1/1) ... [2018-11-28 10:33:49,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 10:33:49,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 10:33:49,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 10:33:49,231 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 10:33:49,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:49" (1/1) ... [2018-11-28 10:33:49,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:49" (1/1) ... [2018-11-28 10:33:49,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:49" (1/1) ... [2018-11-28 10:33:49,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:49" (1/1) ... [2018-11-28 10:33:49,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:49" (1/1) ... [2018-11-28 10:33:49,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:49" (1/1) ... [2018-11-28 10:33:49,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:49" (1/1) ... [2018-11-28 10:33:49,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 10:33:49,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 10:33:49,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 10:33:49,247 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 10:33:49,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cafb965f-0bdd-4ac0-8d13-b3a92f64cfdd/bin-2019/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 [2018-11-28 10:33:49,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 10:33:49,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 10:33:49,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 10:33:49,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 10:33:49,345 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 10:33:49,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 10:33:49,458 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 10:33:49,458 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 10:33:49,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:33:49 BoogieIcfgContainer [2018-11-28 10:33:49,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 10:33:49,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 10:33:49,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 10:33:49,462 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 10:33:49,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 10:33:49" (1/3) ... [2018-11-28 10:33:49,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131076c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:33:49, skipping insertion in model container [2018-11-28 10:33:49,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:33:49" (2/3) ... [2018-11-28 10:33:49,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131076c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:33:49, skipping insertion in model container [2018-11-28 10:33:49,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:33:49" (3/3) ... [2018-11-28 10:33:49,466 INFO L112 eAbstractionObserver]: Analyzing ICFG signextension_true-unreach-call_true-termination.c [2018-11-28 10:33:49,474 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 10:33:49,480 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 10:33:49,492 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 10:33:49,516 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 10:33:49,517 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 10:33:49,517 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 10:33:49,517 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 10:33:49,517 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 10:33:49,517 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 10:33:49,518 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 10:33:49,518 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 10:33:49,518 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 10:33:49,532 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2018-11-28 10:33:49,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-28 10:33:49,537 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:33:49,538 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:33:49,540 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 10:33:49,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:33:49,546 INFO L82 PathProgramCache]: Analyzing trace with hash 408836530, now seen corresponding path program 1 times [2018-11-28 10:33:49,548 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:33:49,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:33:49,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:49,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:33:49,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:33:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:33:49,860 WARN L180 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 28 [2018-11-28 10:33:49,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:33:49,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:33:49,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 10:33:49,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 10:33:49,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 10:33:49,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 10:33:49,883 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2018-11-28 10:33:49,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:33:49,906 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2018-11-28 10:33:49,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 10:33:49,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-11-28 10:33:49,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:33:49,914 INFO L225 Difference]: With dead ends: 16 [2018-11-28 10:33:49,914 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 10:33:49,918 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 10:33:49,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 10:33:49,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 10:33:49,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 10:33:49,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 10:33:49,943 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2018-11-28 10:33:49,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:33:49,943 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 10:33:49,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 10:33:49,943 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 10:33:49,943 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 10:33:49,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 10:33:49,962 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 10:33:49,962 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 10:33:49,962 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 10:33:49,963 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 10:33:49,963 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 10:33:49,963 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 10:33:49,963 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2018-11-28 10:33:49,963 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 3 27) the Hoare annotation is: true [2018-11-28 10:33:49,963 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 3 27) no Hoare annotation was computed. [2018-11-28 10:33:49,964 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 3 27) no Hoare annotation was computed. [2018-11-28 10:33:49,964 INFO L444 ceAbstractionStarter]: At program point L21(lines 3 27) the Hoare annotation is: false [2018-11-28 10:33:49,964 INFO L448 ceAbstractionStarter]: For program point L19(lines 19 22) no Hoare annotation was computed. [2018-11-28 10:33:49,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 10:33:49 BoogieIcfgContainer [2018-11-28 10:33:49,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 10:33:49,971 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 10:33:49,971 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 10:33:49,971 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 10:33:49,971 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:33:49" (3/4) ... [2018-11-28 10:33:49,975 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 10:33:49,980 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 10:33:49,980 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 10:33:49,983 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-28 10:33:49,983 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-28 10:33:49,984 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 10:33:50,016 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_cafb965f-0bdd-4ac0-8d13-b3a92f64cfdd/bin-2019/uautomizer/witness.graphml [2018-11-28 10:33:50,016 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 10:33:50,017 INFO L168 Benchmark]: Toolchain (without parser) took 962.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 953.3 MB in the beginning and 1.1 GB in the end (delta: -143.4 MB). Peak memory consumption was 6.1 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:50,017 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 10:33:50,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 153.11 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:50,018 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.93 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 10:33:50,019 INFO L168 Benchmark]: Boogie Preprocessor took 15.94 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 10:33:50,019 INFO L168 Benchmark]: RCFGBuilder took 212.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -189.5 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:50,020 INFO L168 Benchmark]: TraceAbstraction took 510.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:50,020 INFO L168 Benchmark]: Witness Printer took 45.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-11-28 10:33:50,022 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 153.11 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 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 20.93 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.94 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 212.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -189.5 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 510.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 11.5 GB. * Witness Printer took 45.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: 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: 3]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 12 locations, 1 error locations. SAFE Result, 0.4s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8 SDtfs, 2 SDslu, 6 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 5 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 5 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 306 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...