./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loops/trex01_false-unreach-call_true-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_288ca507-eaaa-4ebc-966e-0ca133c58168/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_288ca507-eaaa-4ebc-966e-0ca133c58168/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_288ca507-eaaa-4ebc-966e-0ca133c58168/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_288ca507-eaaa-4ebc-966e-0ca133c58168/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/trex01_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_288ca507-eaaa-4ebc-966e-0ca133c58168/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_288ca507-eaaa-4ebc-966e-0ca133c58168/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 b3a658a1fe592322f5aa7f1391ad7ef7d0545b11 .................................................................................................................................................................................................................................................................................... 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 08:34:31,231 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:34:31,232 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:34:31,240 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:34:31,241 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:34:31,241 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:34:31,242 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:34:31,243 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:34:31,244 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:34:31,245 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:34:31,246 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:34:31,246 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:34:31,246 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:34:31,247 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:34:31,248 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:34:31,248 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:34:31,249 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:34:31,250 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:34:31,251 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:34:31,252 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:34:31,253 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:34:31,254 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:34:31,255 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:34:31,255 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:34:31,255 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:34:31,256 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:34:31,257 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:34:31,257 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:34:31,258 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:34:31,258 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:34:31,258 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:34:31,259 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:34:31,259 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:34:31,259 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:34:31,260 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:34:31,260 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:34:31,260 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_288ca507-eaaa-4ebc-966e-0ca133c58168/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 08:34:31,270 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:34:31,270 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:34:31,271 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 08:34:31,271 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 08:34:31,272 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 08:34:31,272 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 08:34:31,272 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 08:34:31,272 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:34:31,272 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 08:34:31,272 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 08:34:31,272 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 08:34:31,273 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:34:31,273 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 08:34:31,273 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 08:34:31,273 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 08:34:31,273 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 08:34:31,273 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:34:31,273 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:34:31,273 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 08:34:31,274 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:34:31,274 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:34:31,274 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 08:34:31,274 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 08:34:31,274 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 08:34:31,274 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:34:31,275 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 08:34:31,275 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 08:34:31,275 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 08:34:31,275 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 08:34:31,275 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 08:34:31,275 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_288ca507-eaaa-4ebc-966e-0ca133c58168/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 -> b3a658a1fe592322f5aa7f1391ad7ef7d0545b11 [2018-11-18 08:34:31,299 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:34:31,307 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:34:31,310 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:34:31,311 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:34:31,311 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:34:31,312 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_288ca507-eaaa-4ebc-966e-0ca133c58168/bin-2019/uautomizer/../../sv-benchmarks/c/loops/trex01_false-unreach-call_true-termination.i [2018-11-18 08:34:31,354 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_288ca507-eaaa-4ebc-966e-0ca133c58168/bin-2019/uautomizer/data/62406efc6/06cd7754198b45578597f7ab2b9e1e69/FLAG2c6c56b74 [2018-11-18 08:34:31,689 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:34:31,689 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_288ca507-eaaa-4ebc-966e-0ca133c58168/sv-benchmarks/c/loops/trex01_false-unreach-call_true-termination.i [2018-11-18 08:34:31,694 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_288ca507-eaaa-4ebc-966e-0ca133c58168/bin-2019/uautomizer/data/62406efc6/06cd7754198b45578597f7ab2b9e1e69/FLAG2c6c56b74 [2018-11-18 08:34:32,111 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_288ca507-eaaa-4ebc-966e-0ca133c58168/bin-2019/uautomizer/data/62406efc6/06cd7754198b45578597f7ab2b9e1e69 [2018-11-18 08:34:32,113 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:34:32,114 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 08:34:32,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:34:32,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:34:32,117 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:34:32,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63274aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32, skipping insertion in model container [2018-11-18 08:34:32,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:34:32,137 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:34:32,245 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:34:32,248 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:34:32,258 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:34:32,266 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:34:32,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32 WrapperNode [2018-11-18 08:34:32,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:34:32,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:34:32,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:34:32,267 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:34:32,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:34:32,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:34:32,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:34:32,284 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:34:32,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_288ca507-eaaa-4ebc-966e-0ca133c58168/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 08:34:32,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 08:34:32,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:34:32,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 08:34:32,357 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-11-18 08:34:32,357 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 08:34:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 08:34:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 08:34:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2018-11-18 08:34:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 08:34:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-11-18 08:34:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 08:34:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 08:34:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:34:32,477 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:34:32,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:32 BoogieIcfgContainer [2018-11-18 08:34:32,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:34:32,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 08:34:32,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 08:34:32,481 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 08:34:32,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:34:32" (1/3) ... [2018-11-18 08:34:32,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f7319b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:32, skipping insertion in model container [2018-11-18 08:34:32,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (2/3) ... [2018-11-18 08:34:32,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f7319b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:32, skipping insertion in model container [2018-11-18 08:34:32,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:32" (3/3) ... [2018-11-18 08:34:32,484 INFO L112 eAbstractionObserver]: Analyzing ICFG trex01_false-unreach-call_true-termination.i [2018-11-18 08:34:32,492 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 08:34:32,498 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 08:34:32,511 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 08:34:32,533 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 08:34:32,534 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 08:34:32,534 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 08:34:32,534 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 08:34:32,534 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:34:32,534 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:34:32,534 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 08:34:32,534 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:34:32,535 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 08:34:32,545 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-11-18 08:34:32,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 08:34:32,549 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:34:32,549 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:32,550 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:34:32,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:32,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1007968315, now seen corresponding path program 1 times [2018-11-18 08:34:32,555 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:32,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:32,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:32,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:32,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:32,640 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 08:34:32,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:34:32,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 08:34:32,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 08:34:32,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 08:34:32,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:34:32,654 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2018-11-18 08:34:32,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:34:32,667 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2018-11-18 08:34:32,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 08:34:32,668 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-11-18 08:34:32,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:34:32,674 INFO L225 Difference]: With dead ends: 48 [2018-11-18 08:34:32,674 INFO L226 Difference]: Without dead ends: 17 [2018-11-18 08:34:32,677 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 08:34:32,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-18 08:34:32,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-18 08:34:32,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-18 08:34:32,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-11-18 08:34:32,704 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2018-11-18 08:34:32,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:34:32,704 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-11-18 08:34:32,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 08:34:32,704 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-11-18 08:34:32,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 08:34:32,705 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:34:32,705 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:32,705 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:34:32,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:32,705 INFO L82 PathProgramCache]: Analyzing trace with hash 903668168, now seen corresponding path program 1 times [2018-11-18 08:34:32,705 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:32,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:32,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:32,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:32,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:32,741 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 08:34:32,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:34:32 BoogieIcfgContainer [2018-11-18 08:34:32,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 08:34:32,762 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 08:34:32,762 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 08:34:32,762 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 08:34:32,763 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:32" (3/4) ... [2018-11-18 08:34:32,765 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 08:34:32,799 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_288ca507-eaaa-4ebc-966e-0ca133c58168/bin-2019/uautomizer/witness.graphml [2018-11-18 08:34:32,800 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 08:34:32,800 INFO L168 Benchmark]: Toolchain (without parser) took 686.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 958.0 MB in the beginning and 1.1 GB in the end (delta: -152.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:34:32,802 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:34:32,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 151.84 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:32,802 INFO L168 Benchmark]: Boogie Preprocessor took 17.64 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:32,803 INFO L168 Benchmark]: RCFGBuilder took 193.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -192.8 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:32,804 INFO L168 Benchmark]: TraceAbstraction took 283.53 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: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:32,804 INFO L168 Benchmark]: Witness Printer took 37.70 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: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:32,807 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 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 151.84 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.64 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 193.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -192.8 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 283.53 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: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * Witness Printer took 37.70 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: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L31] _Bool c = __VERIFIER_nondet_bool(); [L32] COND TRUE \read(c) VAL [c=1] [L33] CALL f(1) VAL [\old(d)=1] [L11] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L11] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L11] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L11] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; VAL [\old(d)=1, d=1, k=0, x=0, y=0, z=1] [L12] COND FALSE !(!(k <= 1073741823)) VAL [\old(d)=1, d=1, k=0, x=0, y=0, z=1] [L15] COND FALSE !(z < k) VAL [\old(d)=1, d=1, k=0, x=0, y=0, z=1] [L16] CALL __VERIFIER_assert(z>=2) VAL [\old(cond)=0] [L3] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 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=30occurred 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, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 169 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...