./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call.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_bac9fb1a-6c23-4e01-aa48-995b96147b2e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bac9fb1a-6c23-4e01-aa48-995b96147b2e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bac9fb1a-6c23-4e01-aa48-995b96147b2e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bac9fb1a-6c23-4e01-aa48-995b96147b2e/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_bac9fb1a-6c23-4e01-aa48-995b96147b2e/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bac9fb1a-6c23-4e01-aa48-995b96147b2e/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 5a78e5ac8a70d10b48fa6c5955c8640de4def14b .................................................................................................................................................................................................................................................................................................................................... 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 17:12:18,246 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:12:18,247 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:12:18,252 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:12:18,253 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:12:18,253 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:12:18,254 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:12:18,255 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:12:18,256 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:12:18,257 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:12:18,257 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:12:18,258 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:12:18,258 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:12:18,259 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:12:18,259 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:12:18,260 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:12:18,260 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:12:18,261 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:12:18,262 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:12:18,263 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:12:18,264 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:12:18,264 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:12:18,266 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:12:18,266 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:12:18,266 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:12:18,266 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:12:18,267 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:12:18,267 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:12:18,268 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:12:18,268 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:12:18,269 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:12:18,269 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:12:18,269 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:12:18,269 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:12:18,270 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:12:18,271 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:12:18,271 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bac9fb1a-6c23-4e01-aa48-995b96147b2e/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 17:12:18,278 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:12:18,278 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:12:18,278 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:12:18,279 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 17:12:18,279 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 17:12:18,279 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 17:12:18,279 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 17:12:18,280 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:12:18,280 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 17:12:18,280 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 17:12:18,280 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 17:12:18,280 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:12:18,280 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 17:12:18,280 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:12:18,280 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 17:12:18,281 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 17:12:18,281 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:12:18,281 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:12:18,281 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 17:12:18,281 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:12:18,281 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:12:18,281 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:12:18,281 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:12:18,282 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:12:18,282 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:12:18,282 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:12:18,282 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 17:12:18,282 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 17:12:18,282 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:12:18,282 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 17:12:18,283 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_bac9fb1a-6c23-4e01-aa48-995b96147b2e/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 -> 5a78e5ac8a70d10b48fa6c5955c8640de4def14b [2018-11-18 17:12:18,305 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:12:18,313 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:12:18,316 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:12:18,317 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:12:18,317 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:12:18,318 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bac9fb1a-6c23-4e01-aa48-995b96147b2e/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call.i [2018-11-18 17:12:18,363 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bac9fb1a-6c23-4e01-aa48-995b96147b2e/bin-2019/uautomizer/data/7e1033b99/760519f8c86542f79886088f3d19a945/FLAGa5602b763 [2018-11-18 17:12:18,751 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:12:18,752 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bac9fb1a-6c23-4e01-aa48-995b96147b2e/sv-benchmarks/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call.i [2018-11-18 17:12:18,755 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bac9fb1a-6c23-4e01-aa48-995b96147b2e/bin-2019/uautomizer/data/7e1033b99/760519f8c86542f79886088f3d19a945/FLAGa5602b763 [2018-11-18 17:12:18,766 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bac9fb1a-6c23-4e01-aa48-995b96147b2e/bin-2019/uautomizer/data/7e1033b99/760519f8c86542f79886088f3d19a945 [2018-11-18 17:12:18,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:12:18,770 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 17:12:18,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:12:18,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:12:18,774 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:12:18,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:12:18" (1/1) ... [2018-11-18 17:12:18,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@488b2caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:12:18, skipping insertion in model container [2018-11-18 17:12:18,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:12:18" (1/1) ... [2018-11-18 17:12:18,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:12:18,795 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:12:18,891 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:12:18,894 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:12:18,901 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:12:18,909 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:12:18,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:12:18 WrapperNode [2018-11-18 17:12:18,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:12:18,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:12:18,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:12:18,910 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:12:18,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:12:18" (1/1) ... [2018-11-18 17:12:18,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:12:18" (1/1) ... [2018-11-18 17:12:18,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:12:18" (1/1) ... [2018-11-18 17:12:18,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:12:18" (1/1) ... [2018-11-18 17:12:18,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:12:18" (1/1) ... [2018-11-18 17:12:18,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:12:18" (1/1) ... [2018-11-18 17:12:18,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:12:18" (1/1) ... [2018-11-18 17:12:18,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:12:18,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:12:18,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:12:18,927 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:12:18,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:12:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bac9fb1a-6c23-4e01-aa48-995b96147b2e/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 17:12:19,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:12:19,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:12:19,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2018-11-18 17:12:19,003 INFO L138 BoogieDeclarations]: Found implementation of procedure check_error [2018-11-18 17:12:19,003 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:12:19,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 17:12:19,003 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2018-11-18 17:12:19,003 INFO L130 BoogieDeclarations]: Found specification of procedure check_error [2018-11-18 17:12:19,004 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:12:19,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:12:19,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:12:19,087 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:12:19,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:12:19 BoogieIcfgContainer [2018-11-18 17:12:19,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:12:19,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:12:19,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:12:19,089 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:12:19,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:12:18" (1/3) ... [2018-11-18 17:12:19,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724e7c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:12:19, skipping insertion in model container [2018-11-18 17:12:19,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:12:18" (2/3) ... [2018-11-18 17:12:19,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724e7c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:12:19, skipping insertion in model container [2018-11-18 17:12:19,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:12:19" (3/3) ... [2018-11-18 17:12:19,092 INFO L112 eAbstractionObserver]: Analyzing ICFG test_while_int_true-termination.c_false-unreach-call.i [2018-11-18 17:12:19,099 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:12:19,103 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 17:12:19,112 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 17:12:19,134 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 17:12:19,135 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:12:19,135 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 17:12:19,135 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:12:19,135 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:12:19,135 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:12:19,135 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:12:19,135 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:12:19,135 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:12:19,149 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-18 17:12:19,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 17:12:19,154 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:12:19,154 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:12:19,156 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:12:19,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:12:19,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1835521858, now seen corresponding path program 1 times [2018-11-18 17:12:19,161 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:12:19,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:12:19,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:12:19,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:12:19,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:12:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:12:19,287 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 17:12:19,289 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:12:19,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 17:12:19,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 17:12:19,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 17:12:19,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 17:12:19,306 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 6 states. [2018-11-18 17:12:19,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:12:19,390 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2018-11-18 17:12:19,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 17:12:19,392 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-11-18 17:12:19,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:12:19,396 INFO L225 Difference]: With dead ends: 46 [2018-11-18 17:12:19,396 INFO L226 Difference]: Without dead ends: 24 [2018-11-18 17:12:19,399 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-18 17:12:19,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-18 17:12:19,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2018-11-18 17:12:19,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-18 17:12:19,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-11-18 17:12:19,422 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 12 [2018-11-18 17:12:19,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:12:19,422 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-11-18 17:12:19,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 17:12:19,423 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-18 17:12:19,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 17:12:19,423 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:12:19,423 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:12:19,423 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:12:19,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:12:19,424 INFO L82 PathProgramCache]: Analyzing trace with hash -932126179, now seen corresponding path program 1 times [2018-11-18 17:12:19,424 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:12:19,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:12:19,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:12:19,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:12:19,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:12:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:12:19,514 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:12:19,514 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:12:19,514 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bac9fb1a-6c23-4e01-aa48-995b96147b2e/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 [2018-11-18 17:12:19,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:12:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:12:19,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:12:19,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:12:19,604 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:12:19,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2018-11-18 17:12:19,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 17:12:19,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 17:12:19,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-11-18 17:12:19,605 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 10 states. [2018-11-18 17:12:19,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:12:19,686 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-11-18 17:12:19,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 17:12:19,686 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2018-11-18 17:12:19,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:12:19,687 INFO L225 Difference]: With dead ends: 34 [2018-11-18 17:12:19,687 INFO L226 Difference]: Without dead ends: 31 [2018-11-18 17:12:19,687 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-11-18 17:12:19,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-18 17:12:19,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2018-11-18 17:12:19,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-18 17:12:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-11-18 17:12:19,692 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 19 [2018-11-18 17:12:19,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:12:19,693 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-11-18 17:12:19,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 17:12:19,693 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-11-18 17:12:19,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 17:12:19,694 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:12:19,694 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:12:19,694 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:12:19,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:12:19,694 INFO L82 PathProgramCache]: Analyzing trace with hash 362131422, now seen corresponding path program 2 times [2018-11-18 17:12:19,694 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:12:19,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:12:19,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:12:19,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:12:19,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:12:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:12:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:12:19,720 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 17:12:19,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:12:19 BoogieIcfgContainer [2018-11-18 17:12:19,733 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:12:19,734 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:12:19,734 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:12:19,734 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:12:19,734 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:12:19" (3/4) ... [2018-11-18 17:12:19,736 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 17:12:19,765 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_bac9fb1a-6c23-4e01-aa48-995b96147b2e/bin-2019/uautomizer/witness.graphml [2018-11-18 17:12:19,765 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:12:19,766 INFO L168 Benchmark]: Toolchain (without parser) took 996.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 961.9 MB in the beginning and 1.1 GB in the end (delta: -91.9 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. [2018-11-18 17:12:19,767 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:12:19,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 139.05 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:12:19,768 INFO L168 Benchmark]: Boogie Preprocessor took 16.72 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:12:19,768 INFO L168 Benchmark]: RCFGBuilder took 160.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -178.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-18 17:12:19,768 INFO L168 Benchmark]: TraceAbstraction took 645.58 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: 64.7 MB). Peak memory consumption was 64.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:12:19,769 INFO L168 Benchmark]: Witness Printer took 31.88 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:12:19,771 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 139.05 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.72 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 160.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -178.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 645.58 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: 64.7 MB). Peak memory consumption was 64.7 MB. Max. memory is 11.5 GB. * Witness Printer took 31.88 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: 5.4 MB). Peak memory consumption was 5.4 MB. 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: [L23] int i=0; VAL [i=0] [L24] COND TRUE i<5 [L25] i++ VAL [i=1] [L29] CALL check_error(i!=3) VAL [\old(b)=1] [L18] COND TRUE, RET (b) ? (0) : __blast_assert () VAL [\old(b)=1, b=1] [L29] check_error(i!=3) VAL [i=1] [L24] COND TRUE i<5 [L25] i++ VAL [i=2] [L29] CALL check_error(i!=3) VAL [\old(b)=1] [L18] COND TRUE, RET (b) ? (0) : __blast_assert () VAL [\old(b)=1, b=1] [L29] check_error(i!=3) VAL [i=2] [L24] COND TRUE i<5 [L25] i++ VAL [i=3] [L29] CALL check_error(i!=3) VAL [\old(b)=0] [L18] COND FALSE !((b) ? (0) : __blast_assert ()) VAL [\old(b)=0, b=0] [L18] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. UNSAFE Result, 0.6s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 27 SDtfs, 24 SDslu, 117 SDs, 0 SdLazy, 67 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=2, 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 1635 SizeOfPredicates, 2 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 3/10 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...