./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loops/trex02_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c0433518-f2eb-4d9d-ae12-a4c5851900f6/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c0433518-f2eb-4d9d-ae12-a4c5851900f6/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c0433518-f2eb-4d9d-ae12-a4c5851900f6/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c0433518-f2eb-4d9d-ae12-a4c5851900f6/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/trex02_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_c0433518-f2eb-4d9d-ae12-a4c5851900f6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c0433518-f2eb-4d9d-ae12-a4c5851900f6/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 705fb730024062c63456557ff967363021656cde ........................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:46:15,400 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:46:15,402 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:46:15,418 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:46:15,419 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:46:15,420 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:46:15,422 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:46:15,428 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:46:15,430 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:46:15,430 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:46:15,432 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:46:15,432 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:46:15,433 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:46:15,433 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:46:15,434 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:46:15,438 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:46:15,439 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:46:15,440 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:46:15,442 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:46:15,455 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:46:15,456 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:46:15,457 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:46:15,459 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:46:15,459 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:46:15,459 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:46:15,460 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:46:15,461 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:46:15,461 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:46:15,462 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:46:15,466 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:46:15,466 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:46:15,467 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 19:46:15,467 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 19:46:15,467 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 19:46:15,468 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 19:46:15,469 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 19:46:15,469 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c0433518-f2eb-4d9d-ae12-a4c5851900f6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-26 19:46:15,482 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:46:15,482 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:46:15,482 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:46:15,483 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:46:15,483 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:46:15,483 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:46:15,483 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:46:15,484 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:46:15,484 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 19:46:15,484 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:46:15,484 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 19:46:15,484 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:46:15,484 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:46:15,485 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:46:15,485 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:46:15,485 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 19:46:15,485 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:46:15,485 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:46:15,485 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:46:15,486 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:46:15,486 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:46:15,486 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:46:15,486 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:46:15,486 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:46:15,486 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:46:15,486 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:46:15,487 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:46:15,487 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:46:15,487 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:46:15,487 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_c0433518-f2eb-4d9d-ae12-a4c5851900f6/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 -> 705fb730024062c63456557ff967363021656cde [2018-10-26 19:46:15,523 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:46:15,537 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:46:15,540 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:46:15,542 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:46:15,542 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:46:15,543 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c0433518-f2eb-4d9d-ae12-a4c5851900f6/bin-2019/uautomizer/../../sv-benchmarks/c/loops/trex02_true-unreach-call_true-termination.i [2018-10-26 19:46:15,602 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c0433518-f2eb-4d9d-ae12-a4c5851900f6/bin-2019/uautomizer/data/33babaf97/1fb7ec9dccd1458092bfd45399de2f4d/FLAGccf434c23 [2018-10-26 19:46:15,963 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:46:15,964 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c0433518-f2eb-4d9d-ae12-a4c5851900f6/sv-benchmarks/c/loops/trex02_true-unreach-call_true-termination.i [2018-10-26 19:46:15,969 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c0433518-f2eb-4d9d-ae12-a4c5851900f6/bin-2019/uautomizer/data/33babaf97/1fb7ec9dccd1458092bfd45399de2f4d/FLAGccf434c23 [2018-10-26 19:46:15,982 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c0433518-f2eb-4d9d-ae12-a4c5851900f6/bin-2019/uautomizer/data/33babaf97/1fb7ec9dccd1458092bfd45399de2f4d [2018-10-26 19:46:15,987 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:46:15,988 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:46:15,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:46:15,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:46:15,993 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:46:15,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:46:15" (1/1) ... [2018-10-26 19:46:15,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3887c026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:15, skipping insertion in model container [2018-10-26 19:46:15,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:46:15" (1/1) ... [2018-10-26 19:46:16,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:46:16,022 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:46:16,157 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:46:16,159 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:46:16,171 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:46:16,184 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:46:16,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:16 WrapperNode [2018-10-26 19:46:16,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:46:16,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:46:16,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:46:16,185 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:46:16,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:16" (1/1) ... [2018-10-26 19:46:16,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:16" (1/1) ... [2018-10-26 19:46:16,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:16" (1/1) ... [2018-10-26 19:46:16,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:16" (1/1) ... [2018-10-26 19:46:16,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:16" (1/1) ... [2018-10-26 19:46:16,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:16" (1/1) ... [2018-10-26 19:46:16,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:16" (1/1) ... [2018-10-26 19:46:16,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:46:16,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:46:16,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:46:16,213 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:46:16,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c0433518-f2eb-4d9d-ae12-a4c5851900f6/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 [2018-10-26 19:46:16,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 19:46:16,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:46:16,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 19:46:16,280 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-10-26 19:46:16,280 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 19:46:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 19:46:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 19:46:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2018-10-26 19:46:16,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-10-26 19:46:16,281 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-10-26 19:46:16,281 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 19:46:16,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 19:46:16,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:46:16,575 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:46:16,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:46:16 BoogieIcfgContainer [2018-10-26 19:46:16,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:46:16,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:46:16,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:46:16,579 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:46:16,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:46:15" (1/3) ... [2018-10-26 19:46:16,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431c691f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:46:16, skipping insertion in model container [2018-10-26 19:46:16,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:46:16" (2/3) ... [2018-10-26 19:46:16,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431c691f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:46:16, skipping insertion in model container [2018-10-26 19:46:16,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:46:16" (3/3) ... [2018-10-26 19:46:16,585 INFO L112 eAbstractionObserver]: Analyzing ICFG trex02_true-unreach-call_true-termination.i [2018-10-26 19:46:16,593 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:46:16,599 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:46:16,613 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:46:16,641 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:46:16,642 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:46:16,642 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:46:16,642 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:46:16,642 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:46:16,642 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:46:16,642 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:46:16,642 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:46:16,642 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:46:16,656 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-10-26 19:46:16,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-26 19:46:16,662 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:46:16,663 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:46:16,665 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:46:16,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:46:16,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1587168562, now seen corresponding path program 1 times [2018-10-26 19:46:16,679 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:46:16,680 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:46:16,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:16,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:46:16,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:46:16,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:46:16,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:46:16,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 19:46:16,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 19:46:16,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 19:46:16,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 19:46:16,803 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-10-26 19:46:16,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:46:16,824 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2018-10-26 19:46:16,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 19:46:16,825 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-10-26 19:46:16,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:46:16,836 INFO L225 Difference]: With dead ends: 36 [2018-10-26 19:46:16,837 INFO L226 Difference]: Without dead ends: 19 [2018-10-26 19:46:16,840 INFO L605 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 [2018-10-26 19:46:16,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-26 19:46:16,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-26 19:46:16,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-26 19:46:16,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-10-26 19:46:16,881 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2018-10-26 19:46:16,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:46:16,882 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-10-26 19:46:16,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 19:46:16,882 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-10-26 19:46:16,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-26 19:46:16,884 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:46:16,884 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:46:16,884 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:46:16,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:46:16,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1847555599, now seen corresponding path program 1 times [2018-10-26 19:46:16,885 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:46:16,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:46:16,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:16,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:46:16,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:46:17,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:46:17,150 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:46:17,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 19:46:17,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:46:17,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:46:17,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:46:17,153 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2018-10-26 19:46:17,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:46:17,392 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2018-10-26 19:46:17,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:46:17,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-10-26 19:46:17,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:46:17,393 INFO L225 Difference]: With dead ends: 19 [2018-10-26 19:46:17,393 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 19:46:17,394 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:46:17,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 19:46:17,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 19:46:17,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 19:46:17,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 19:46:17,395 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-10-26 19:46:17,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:46:17,396 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 19:46:17,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:46:17,396 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 19:46:17,396 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 19:46:17,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 19:46:17,483 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-10-26 19:46:17,483 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-10-26 19:46:17,483 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-26 19:46:17,483 INFO L425 ceAbstractionStarter]: For program point fooEXIT(lines 11 13) no Hoare annotation was computed. [2018-10-26 19:46:17,483 INFO L428 ceAbstractionStarter]: At program point fooENTRY(lines 11 13) the Hoare annotation is: true [2018-10-26 19:46:17,484 INFO L425 ceAbstractionStarter]: For program point fooFINAL(lines 11 13) no Hoare annotation was computed. [2018-10-26 19:46:17,484 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 19:46:17,484 INFO L421 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (<= ~x~0 0) [2018-10-26 19:46:17,484 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-26 19:46:17,484 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 19:46:17,484 INFO L421 ceAbstractionStarter]: At program point mainENTRY(lines 14 22) the Hoare annotation is: (or (< 0 |old(~x~0)|) (<= ~x~0 0)) [2018-10-26 19:46:17,485 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 14 22) no Hoare annotation was computed. [2018-10-26 19:46:17,485 INFO L428 ceAbstractionStarter]: At program point L19(line 19) the Hoare annotation is: true [2018-10-26 19:46:17,485 INFO L425 ceAbstractionStarter]: For program point L18(lines 18 19) no Hoare annotation was computed. [2018-10-26 19:46:17,487 INFO L428 ceAbstractionStarter]: At program point L19-1(lines 16 20) the Hoare annotation is: true [2018-10-26 19:46:17,487 INFO L428 ceAbstractionStarter]: At program point L18-1(line 18) the Hoare annotation is: true [2018-10-26 19:46:17,487 INFO L425 ceAbstractionStarter]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2018-10-26 19:46:17,487 INFO L421 ceAbstractionStarter]: At program point L16-3(lines 16 20) the Hoare annotation is: (or (< 0 |old(~x~0)|) (<= ~x~0 0)) [2018-10-26 19:46:17,487 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 14 22) no Hoare annotation was computed. [2018-10-26 19:46:17,487 INFO L425 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-10-26 19:46:17,488 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-10-26 19:46:17,488 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-10-26 19:46:17,488 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-10-26 19:46:17,488 INFO L425 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-10-26 19:46:17,488 INFO L425 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-10-26 19:46:17,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:46:17 BoogieIcfgContainer [2018-10-26 19:46:17,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:46:17,497 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 19:46:17,498 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 19:46:17,498 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 19:46:17,498 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:46:16" (3/4) ... [2018-10-26 19:46:17,503 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 19:46:17,510 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-26 19:46:17,510 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2018-10-26 19:46:17,511 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-26 19:46:17,511 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-26 19:46:17,514 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-10-26 19:46:17,515 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-10-26 19:46:17,550 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c0433518-f2eb-4d9d-ae12-a4c5851900f6/bin-2019/uautomizer/witness.graphml [2018-10-26 19:46:17,550 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 19:46:17,551 INFO L168 Benchmark]: Toolchain (without parser) took 1563.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 959.8 MB in the beginning and 1.1 GB in the end (delta: -138.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2018-10-26 19:46:17,553 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 19:46:17,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 195.72 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 19:46:17,553 INFO L168 Benchmark]: Boogie Preprocessor took 27.82 ms. Allocated memory is still 1.0 GB. Free memory is still 949.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 19:46:17,554 INFO L168 Benchmark]: RCFGBuilder took 362.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 949.0 MB in the beginning and 1.1 GB in the end (delta: -192.5 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2018-10-26 19:46:17,554 INFO L168 Benchmark]: TraceAbstraction took 920.66 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: 40.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. [2018-10-26 19:46:17,555 INFO L168 Benchmark]: Witness Printer took 52.75 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 19:46:17,559 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 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 195.72 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.82 ms. Allocated memory is still 1.0 GB. Free memory is still 949.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 362.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 949.0 MB in the beginning and 1.1 GB in the end (delta: -192.5 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 920.66 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: 40.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. * Witness Printer took 52.75 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 16]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 45 SDtfs, 6 SDslu, 44 SDs, 0 SdLazy, 4 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 12 PreInvPairs, 13 NumberOfFragments, 26 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 287 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...