./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-lit/gcnr2008_false-unreach-call_false-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_62b47dd2-8b1e-4541-8916-7ab4a9c59b58/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_62b47dd2-8b1e-4541-8916-7ab4a9c59b58/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_62b47dd2-8b1e-4541-8916-7ab4a9c59b58/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_62b47dd2-8b1e-4541-8916-7ab4a9c59b58/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/gcnr2008_false-unreach-call_false-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_62b47dd2-8b1e-4541-8916-7ab4a9c59b58/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_62b47dd2-8b1e-4541-8916-7ab4a9c59b58/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 153d29cc59a928b964d34eac87caede5c68a6fb0 .......................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 10:20:10,930 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:20:10,931 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:20:10,937 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:20:10,937 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:20:10,938 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:20:10,938 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:20:10,940 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:20:10,941 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:20:10,941 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:20:10,942 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:20:10,942 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:20:10,942 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:20:10,943 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:20:10,944 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:20:10,944 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:20:10,945 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:20:10,946 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:20:10,947 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:20:10,948 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:20:10,949 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:20:10,950 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:20:10,951 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:20:10,951 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:20:10,952 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:20:10,952 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:20:10,953 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:20:10,953 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:20:10,954 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:20:10,954 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:20:10,954 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:20:10,955 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:20:10,955 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:20:10,955 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:20:10,955 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:20:10,956 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:20:10,956 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_62b47dd2-8b1e-4541-8916-7ab4a9c59b58/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 10:20:10,963 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:20:10,963 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:20:10,963 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 10:20:10,963 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 10:20:10,964 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 10:20:10,964 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 10:20:10,964 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 10:20:10,964 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:20:10,964 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 10:20:10,964 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 10:20:10,964 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 10:20:10,965 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:20:10,965 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 10:20:10,965 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 10:20:10,965 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 10:20:10,965 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 10:20:10,965 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:20:10,965 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:20:10,965 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 10:20:10,965 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:20:10,966 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:20:10,966 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 10:20:10,966 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 10:20:10,966 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:20:10,966 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:20:10,966 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 10:20:10,966 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 10:20:10,967 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 10:20:10,967 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 10:20:10,967 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 10:20:10,967 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_62b47dd2-8b1e-4541-8916-7ab4a9c59b58/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 -> 153d29cc59a928b964d34eac87caede5c68a6fb0 [2018-11-18 10:20:10,987 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:20:10,995 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:20:10,997 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:20:10,998 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:20:10,998 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:20:10,998 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_62b47dd2-8b1e-4541-8916-7ab4a9c59b58/bin-2019/uautomizer/../../sv-benchmarks/c/loop-lit/gcnr2008_false-unreach-call_false-termination.i [2018-11-18 10:20:11,033 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_62b47dd2-8b1e-4541-8916-7ab4a9c59b58/bin-2019/uautomizer/data/b6012cc5c/071d5d7562534293bf27b1bb403f9615/FLAGa2bde54c1 [2018-11-18 10:20:11,438 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:20:11,439 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_62b47dd2-8b1e-4541-8916-7ab4a9c59b58/sv-benchmarks/c/loop-lit/gcnr2008_false-unreach-call_false-termination.i [2018-11-18 10:20:11,443 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_62b47dd2-8b1e-4541-8916-7ab4a9c59b58/bin-2019/uautomizer/data/b6012cc5c/071d5d7562534293bf27b1bb403f9615/FLAGa2bde54c1 [2018-11-18 10:20:11,453 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_62b47dd2-8b1e-4541-8916-7ab4a9c59b58/bin-2019/uautomizer/data/b6012cc5c/071d5d7562534293bf27b1bb403f9615 [2018-11-18 10:20:11,456 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:20:11,457 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 10:20:11,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:20:11,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:20:11,459 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:20:11,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:20:11" (1/1) ... [2018-11-18 10:20:11,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43218d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:11, skipping insertion in model container [2018-11-18 10:20:11,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:20:11" (1/1) ... [2018-11-18 10:20:11,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:20:11,480 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:20:11,585 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:20:11,588 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:20:11,599 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:20:11,607 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:20:11,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:11 WrapperNode [2018-11-18 10:20:11,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:20:11,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:20:11,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:20:11,608 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:20:11,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:11" (1/1) ... [2018-11-18 10:20:11,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:11" (1/1) ... [2018-11-18 10:20:11,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:11" (1/1) ... [2018-11-18 10:20:11,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:11" (1/1) ... [2018-11-18 10:20:11,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:11" (1/1) ... [2018-11-18 10:20:11,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:11" (1/1) ... [2018-11-18 10:20:11,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:11" (1/1) ... [2018-11-18 10:20:11,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:20:11,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:20:11,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:20:11,626 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:20:11,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_62b47dd2-8b1e-4541-8916-7ab4a9c59b58/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 [2018-11-18 10:20:11,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 10:20:11,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:20:11,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 10:20:11,694 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 10:20:11,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 10:20:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 10:20:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 10:20:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 10:20:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 10:20:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 10:20:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:20:11,816 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:20:11,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:20:11 BoogieIcfgContainer [2018-11-18 10:20:11,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:20:11,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 10:20:11,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 10:20:11,819 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 10:20:11,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:20:11" (1/3) ... [2018-11-18 10:20:11,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f65c033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:20:11, skipping insertion in model container [2018-11-18 10:20:11,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:20:11" (2/3) ... [2018-11-18 10:20:11,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f65c033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:20:11, skipping insertion in model container [2018-11-18 10:20:11,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:20:11" (3/3) ... [2018-11-18 10:20:11,822 INFO L112 eAbstractionObserver]: Analyzing ICFG gcnr2008_false-unreach-call_false-termination.i [2018-11-18 10:20:11,829 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 10:20:11,835 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 10:20:11,844 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 10:20:11,864 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 10:20:11,865 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 10:20:11,865 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 10:20:11,865 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 10:20:11,865 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:20:11,865 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:20:11,865 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 10:20:11,866 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:20:11,866 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 10:20:11,880 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-11-18 10:20:11,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 10:20:11,885 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:20:11,885 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:20:11,887 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:20:11,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:20:11,892 INFO L82 PathProgramCache]: Analyzing trace with hash 728031169, now seen corresponding path program 1 times [2018-11-18 10:20:11,893 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:20:11,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:20:11,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:20:11,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:20:11,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:20:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:20:11,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:20:11,966 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:20:11,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 10:20:11,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 10:20:11,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 10:20:11,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 10:20:11,978 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-11-18 10:20:11,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:20:11,991 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2018-11-18 10:20:11,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 10:20:11,993 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-18 10:20:11,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:20:11,999 INFO L225 Difference]: With dead ends: 37 [2018-11-18 10:20:11,999 INFO L226 Difference]: Without dead ends: 18 [2018-11-18 10:20:12,001 INFO L604 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 [2018-11-18 10:20:12,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-18 10:20:12,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-18 10:20:12,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 10:20:12,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2018-11-18 10:20:12,023 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2018-11-18 10:20:12,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:20:12,024 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2018-11-18 10:20:12,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 10:20:12,024 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2018-11-18 10:20:12,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 10:20:12,024 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:20:12,024 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:20:12,025 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:20:12,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:20:12,025 INFO L82 PathProgramCache]: Analyzing trace with hash -237718556, now seen corresponding path program 1 times [2018-11-18 10:20:12,025 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:20:12,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:20:12,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:20:12,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:20:12,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:20:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:20:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:20:12,060 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 10:20:12,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:20:12 BoogieIcfgContainer [2018-11-18 10:20:12,073 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 10:20:12,073 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:20:12,073 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:20:12,073 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:20:12,074 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:20:11" (3/4) ... [2018-11-18 10:20:12,075 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 10:20:12,101 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_62b47dd2-8b1e-4541-8916-7ab4a9c59b58/bin-2019/uautomizer/witness.graphml [2018-11-18 10:20:12,102 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:20:12,102 INFO L168 Benchmark]: Toolchain (without parser) took 646.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -127.7 MB). Peak memory consumption was 3.9 MB. Max. memory is 11.5 GB. [2018-11-18 10:20:12,103 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:20:12,103 INFO L168 Benchmark]: CACSL2BoogieTranslator took 150.78 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:20:12,104 INFO L168 Benchmark]: Boogie Preprocessor took 17.90 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:20:12,104 INFO L168 Benchmark]: RCFGBuilder took 189.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -171.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. [2018-11-18 10:20:12,105 INFO L168 Benchmark]: TraceAbstraction took 256.28 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: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2018-11-18 10:20:12,105 INFO L168 Benchmark]: Witness Printer took 28.42 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. [2018-11-18 10:20:12,108 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 150.78 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.90 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 189.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -171.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 256.28 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: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * Witness Printer took 28.42 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: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] int x,y,z,w; [L12] EXPR w = 0 [L12] EXPR z = w = 0 [L12] EXPR y = z = w = 0 [L12] x = y = z = w = 0 VAL [w=0, x=0, y=0, z=0] [L13] COND FALSE !(__VERIFIER_nondet_int() && y < 10000) [L28] CALL __VERIFIER_assert(x >= 4 && y <= 2) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 29 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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 incorrect! Received shutdown request...