./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/for_bounded_loop1_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ad37bc43-63b5-4796-afa3-b093abf90ad3/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ad37bc43-63b5-4796-afa3-b093abf90ad3/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ad37bc43-63b5-4796-afa3-b093abf90ad3/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ad37bc43-63b5-4796-afa3-b093abf90ad3/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/for_bounded_loop1_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_ad37bc43-63b5-4796-afa3-b093abf90ad3/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ad37bc43-63b5-4796-afa3-b093abf90ad3/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 0ab550a6e9aa370752671d7ad69781384c889e75 .................................................................................................................................................................................................................................................................................................................................................. 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 0.1.23-635dfa2 [2018-12-01 16:24:04,809 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 16:24:04,810 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 16:24:04,818 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 16:24:04,818 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 16:24:04,818 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 16:24:04,819 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 16:24:04,820 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 16:24:04,821 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 16:24:04,821 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 16:24:04,821 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 16:24:04,821 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 16:24:04,822 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 16:24:04,822 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 16:24:04,823 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 16:24:04,823 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 16:24:04,824 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 16:24:04,825 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 16:24:04,826 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 16:24:04,827 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 16:24:04,827 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 16:24:04,828 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 16:24:04,829 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 16:24:04,829 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 16:24:04,829 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 16:24:04,829 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 16:24:04,830 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 16:24:04,830 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 16:24:04,831 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 16:24:04,831 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 16:24:04,832 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 16:24:04,832 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 16:24:04,832 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 16:24:04,832 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 16:24:04,833 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 16:24:04,834 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 16:24:04,834 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ad37bc43-63b5-4796-afa3-b093abf90ad3/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-01 16:24:04,844 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 16:24:04,844 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 16:24:04,845 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 16:24:04,845 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 16:24:04,845 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 16:24:04,846 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 16:24:04,846 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 16:24:04,846 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 16:24:04,846 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 16:24:04,846 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 16:24:04,846 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 16:24:04,847 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 16:24:04,847 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 16:24:04,847 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 16:24:04,847 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 16:24:04,847 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 16:24:04,847 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 16:24:04,847 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 16:24:04,848 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 16:24:04,848 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 16:24:04,848 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 16:24:04,848 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 16:24:04,848 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 16:24:04,848 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 16:24:04,849 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 16:24:04,849 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 16:24:04,849 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 16:24:04,849 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 16:24:04,849 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 16:24:04,849 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 16:24:04,849 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_ad37bc43-63b5-4796-afa3-b093abf90ad3/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 -> 0ab550a6e9aa370752671d7ad69781384c889e75 [2018-12-01 16:24:04,873 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 16:24:04,882 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 16:24:04,884 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 16:24:04,885 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 16:24:04,886 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 16:24:04,886 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ad37bc43-63b5-4796-afa3-b093abf90ad3/bin-2019/uautomizer/../../sv-benchmarks/c/loops/for_bounded_loop1_false-unreach-call_true-termination.i [2018-12-01 16:24:04,925 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ad37bc43-63b5-4796-afa3-b093abf90ad3/bin-2019/uautomizer/data/8235e913d/25b2d2fc6763457d9197ac59bfd45d0c/FLAGdf83badc4 [2018-12-01 16:24:05,300 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 16:24:05,301 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ad37bc43-63b5-4796-afa3-b093abf90ad3/sv-benchmarks/c/loops/for_bounded_loop1_false-unreach-call_true-termination.i [2018-12-01 16:24:05,304 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ad37bc43-63b5-4796-afa3-b093abf90ad3/bin-2019/uautomizer/data/8235e913d/25b2d2fc6763457d9197ac59bfd45d0c/FLAGdf83badc4 [2018-12-01 16:24:05,313 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ad37bc43-63b5-4796-afa3-b093abf90ad3/bin-2019/uautomizer/data/8235e913d/25b2d2fc6763457d9197ac59bfd45d0c [2018-12-01 16:24:05,314 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 16:24:05,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 16:24:05,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 16:24:05,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 16:24:05,318 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 16:24:05,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:24:05" (1/1) ... [2018-12-01 16:24:05,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5663953f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:24:05, skipping insertion in model container [2018-12-01 16:24:05,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:24:05" (1/1) ... [2018-12-01 16:24:05,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 16:24:05,334 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 16:24:05,418 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 16:24:05,420 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 16:24:05,430 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 16:24:05,437 INFO L195 MainTranslator]: Completed translation [2018-12-01 16:24:05,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:24:05 WrapperNode [2018-12-01 16:24:05,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 16:24:05,438 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 16:24:05,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 16:24:05,438 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 16:24:05,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:24:05" (1/1) ... [2018-12-01 16:24:05,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:24:05" (1/1) ... [2018-12-01 16:24:05,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 16:24:05,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 16:24:05,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 16:24:05,452 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 16:24:05,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:24:05" (1/1) ... [2018-12-01 16:24:05,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:24:05" (1/1) ... [2018-12-01 16:24:05,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:24:05" (1/1) ... [2018-12-01 16:24:05,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:24:05" (1/1) ... [2018-12-01 16:24:05,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:24:05" (1/1) ... [2018-12-01 16:24:05,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:24:05" (1/1) ... [2018-12-01 16:24:05,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:24:05" (1/1) ... [2018-12-01 16:24:05,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 16:24:05,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 16:24:05,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 16:24:05,495 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 16:24:05,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:24:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad37bc43-63b5-4796-afa3-b093abf90ad3/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 [2018-12-01 16:24:05,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 16:24:05,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 16:24:05,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 16:24:05,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 16:24:05,529 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 16:24:05,529 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 16:24:05,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-01 16:24:05,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-01 16:24:05,624 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 16:24:05,625 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-01 16:24:05,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:24:05 BoogieIcfgContainer [2018-12-01 16:24:05,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 16:24:05,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 16:24:05,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 16:24:05,628 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 16:24:05,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 04:24:05" (1/3) ... [2018-12-01 16:24:05,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d1c1ae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 04:24:05, skipping insertion in model container [2018-12-01 16:24:05,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:24:05" (2/3) ... [2018-12-01 16:24:05,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d1c1ae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 04:24:05, skipping insertion in model container [2018-12-01 16:24:05,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:24:05" (3/3) ... [2018-12-01 16:24:05,631 INFO L112 eAbstractionObserver]: Analyzing ICFG for_bounded_loop1_false-unreach-call_true-termination.i [2018-12-01 16:24:05,638 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 16:24:05,642 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 16:24:05,651 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 16:24:05,667 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 16:24:05,668 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 16:24:05,668 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 16:24:05,668 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 16:24:05,668 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 16:24:05,668 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 16:24:05,668 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 16:24:05,668 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 16:24:05,668 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 16:24:05,678 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-12-01 16:24:05,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-01 16:24:05,681 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:24:05,681 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 16:24:05,683 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 16:24:05,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:24:05,686 INFO L82 PathProgramCache]: Analyzing trace with hash 429908039, now seen corresponding path program 1 times [2018-12-01 16:24:05,687 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:24:05,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:24:05,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:24:05,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:24:05,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:24:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:24:05,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:24:05,815 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 16:24:05,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-01 16:24:05,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 16:24:05,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 16:24:05,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-01 16:24:05,826 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 6 states. [2018-12-01 16:24:05,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:24:05,893 INFO L93 Difference]: Finished difference Result 50 states and 70 transitions. [2018-12-01 16:24:05,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-01 16:24:05,894 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-12-01 16:24:05,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:24:05,900 INFO L225 Difference]: With dead ends: 50 [2018-12-01 16:24:05,900 INFO L226 Difference]: Without dead ends: 26 [2018-12-01 16:24:05,902 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-12-01 16:24:05,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-01 16:24:05,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-12-01 16:24:05,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-01 16:24:05,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-12-01 16:24:05,926 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 11 [2018-12-01 16:24:05,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:24:05,926 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-12-01 16:24:05,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 16:24:05,926 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-12-01 16:24:05,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-01 16:24:05,927 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:24:05,927 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 16:24:05,927 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 16:24:05,927 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:24:05,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1060899037, now seen corresponding path program 1 times [2018-12-01 16:24:05,927 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:24:05,927 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:24:05,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:24:05,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:24:05,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:24:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:24:06,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:24:06,001 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:24:06,001 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad37bc43-63b5-4796-afa3-b093abf90ad3/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:24:06,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:24:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:24:06,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:24:06,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:24:06,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:24:06,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 11 [2018-12-01 16:24:06,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-01 16:24:06,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-01 16:24:06,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-12-01 16:24:06,085 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 11 states. [2018-12-01 16:24:06,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:24:06,174 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-12-01 16:24:06,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-01 16:24:06,174 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2018-12-01 16:24:06,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:24:06,175 INFO L225 Difference]: With dead ends: 36 [2018-12-01 16:24:06,175 INFO L226 Difference]: Without dead ends: 32 [2018-12-01 16:24:06,176 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-12-01 16:24:06,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-01 16:24:06,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2018-12-01 16:24:06,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-01 16:24:06,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-12-01 16:24:06,180 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 18 [2018-12-01 16:24:06,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:24:06,180 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-12-01 16:24:06,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-01 16:24:06,181 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-12-01 16:24:06,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-01 16:24:06,181 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:24:06,181 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 16:24:06,181 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 16:24:06,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:24:06,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1415691032, now seen corresponding path program 1 times [2018-12-01 16:24:06,182 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:24:06,182 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:24:06,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:24:06,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:24:06,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:24:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:24:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:24:06,207 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-01 16:24:06,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 04:24:06 BoogieIcfgContainer [2018-12-01 16:24:06,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 16:24:06,222 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 16:24:06,222 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 16:24:06,222 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 16:24:06,223 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:24:05" (3/4) ... [2018-12-01 16:24:06,224 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-01 16:24:06,252 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ad37bc43-63b5-4796-afa3-b093abf90ad3/bin-2019/uautomizer/witness.graphml [2018-12-01 16:24:06,252 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 16:24:06,253 INFO L168 Benchmark]: Toolchain (without parser) took 938.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 957.1 MB in the beginning and 1.0 GB in the end (delta: -45.8 MB). Peak memory consumption was 66.4 MB. Max. memory is 11.5 GB. [2018-12-01 16:24:06,254 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 16:24:06,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 122.17 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 945.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-12-01 16:24:06,254 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.53 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 16:24:06,254 INFO L168 Benchmark]: Boogie Preprocessor took 43.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -162.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2018-12-01 16:24:06,255 INFO L168 Benchmark]: RCFGBuilder took 129.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 11.5 GB. [2018-12-01 16:24:06,255 INFO L168 Benchmark]: TraceAbstraction took 596.23 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 95.8 MB). Peak memory consumption was 95.8 MB. Max. memory is 11.5 GB. [2018-12-01 16:24:06,255 INFO L168 Benchmark]: Witness Printer took 30.45 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 16:24:06,257 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 122.17 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 945.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.53 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -162.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 129.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 596.23 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 95.8 MB). Peak memory consumption was 95.8 MB. Max. memory is 11.5 GB. * Witness Printer took 30.45 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int i=0, x=0, y=0; [L15] int n=__VERIFIER_nondet_int(); [L16] COND FALSE !(!(n>0)) [L17] i=0 VAL [i=0, n=1, x=0, y=0] [L17] COND TRUE i