./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 14660901cc5c4d61dda44d0e62586d716b569100 ............................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 14660901cc5c4d61dda44d0e62586d716b569100 ............................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 20:47:52,381 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:47:52,382 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:47:52,398 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:47:52,399 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:47:52,400 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:47:52,401 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:47:52,403 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:47:52,404 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:47:52,405 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:47:52,406 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:47:52,406 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:47:52,407 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:47:52,408 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:47:52,414 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:47:52,415 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:47:52,416 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:47:52,417 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:47:52,419 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:47:52,420 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:47:52,424 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:47:52,434 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:47:52,436 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:47:52,436 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:47:52,436 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:47:52,437 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:47:52,438 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:47:52,439 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:47:52,439 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:47:52,440 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:47:52,441 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:47:52,443 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:47:52,443 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:47:52,443 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:47:52,444 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:47:52,445 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:47:52,446 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 20:47:52,464 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:47:52,468 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:47:52,469 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:47:52,469 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 20:47:52,470 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 20:47:52,470 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 20:47:52,470 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 20:47:52,470 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 20:47:52,470 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 20:47:52,470 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 20:47:52,471 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 20:47:52,471 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:47:52,471 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:47:52,472 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 20:47:52,472 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:47:52,472 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:47:52,472 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:47:52,472 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:47:52,472 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:47:52,473 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:47:52,473 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:47:52,473 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:47:52,473 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:47:52,473 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:47:52,473 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:47:52,474 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:47:52,474 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:47:52,474 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:47:52,474 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:47:52,474 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:47:52,474 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 20:47:52,475 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:47:52,475 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 20:47:52,475 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 20:47:52,475 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan 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 -> Taipan 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 -> 14660901cc5c4d61dda44d0e62586d716b569100 [2018-10-26 20:47:52,513 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:47:52,527 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:47:52,531 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:47:52,532 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:47:52,533 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:47:52,533 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-10-26 20:47:52,602 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/data/80ad7b8d6/02cd68697df94912ab028090b69dfc5f/FLAGbe4514304 [2018-10-26 20:47:52,961 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:47:52,962 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-10-26 20:47:52,969 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/data/80ad7b8d6/02cd68697df94912ab028090b69dfc5f/FLAGbe4514304 [2018-10-26 20:47:52,980 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/data/80ad7b8d6/02cd68697df94912ab028090b69dfc5f [2018-10-26 20:47:52,983 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:47:52,984 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 20:47:52,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:47:52,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:47:52,991 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:47:52,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:47:52" (1/1) ... [2018-10-26 20:47:52,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ada5c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:52, skipping insertion in model container [2018-10-26 20:47:52,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:47:52" (1/1) ... [2018-10-26 20:47:53,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:47:53,020 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:47:53,160 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:47:53,164 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:47:53,177 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:47:53,190 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:47:53,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:53 WrapperNode [2018-10-26 20:47:53,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:47:53,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 20:47:53,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 20:47:53,191 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 20:47:53,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:53" (1/1) ... [2018-10-26 20:47:53,206 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:53" (1/1) ... [2018-10-26 20:47:53,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 20:47:53,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:47:53,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:47:53,213 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:47:53,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:53" (1/1) ... [2018-10-26 20:47:53,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:53" (1/1) ... [2018-10-26 20:47:53,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:53" (1/1) ... [2018-10-26 20:47:53,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:53" (1/1) ... [2018-10-26 20:47:53,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:53" (1/1) ... [2018-10-26 20:47:53,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:53" (1/1) ... [2018-10-26 20:47:53,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:53" (1/1) ... [2018-10-26 20:47:53,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:47:53,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:47:53,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:47:53,232 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:47:53,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:47:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 20:47:53,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 20:47:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:47:53,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:47:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 20:47:53,413 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 20:47:53,736 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:47:53,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:47:53 BoogieIcfgContainer [2018-10-26 20:47:53,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:47:53,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:47:53,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:47:53,742 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:47:53,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:47:52" (1/3) ... [2018-10-26 20:47:53,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b0d2bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:47:53, skipping insertion in model container [2018-10-26 20:47:53,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:53" (2/3) ... [2018-10-26 20:47:53,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b0d2bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:47:53, skipping insertion in model container [2018-10-26 20:47:53,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:47:53" (3/3) ... [2018-10-26 20:47:53,748 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-10-26 20:47:53,763 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:47:53,771 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 20:47:53,784 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 20:47:53,826 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:47:53,827 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:47:53,827 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:47:53,827 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:47:53,827 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:47:53,827 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:47:53,827 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:47:53,827 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:47:53,845 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-10-26 20:47:53,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-26 20:47:53,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:47:53,852 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:47:53,861 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:47:53,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:47:53,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1301230683, now seen corresponding path program 1 times [2018-10-26 20:47:53,871 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:47:53,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:47:53,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:47:53,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:47:53,919 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:47:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:47:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:47:53,968 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 20:47:53,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:47:53 BoogieIcfgContainer [2018-10-26 20:47:53,991 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 20:47:53,991 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 20:47:53,991 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 20:47:53,992 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 20:47:53,992 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:47:53" (3/4) ... [2018-10-26 20:47:53,996 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 20:47:53,996 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 20:47:53,997 INFO L168 Benchmark]: Toolchain (without parser) took 1013.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.5 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -184.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:47:53,999 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:47:53,999 INFO L168 Benchmark]: CACSL2BoogieTranslator took 205.57 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 945.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-10-26 20:47:54,000 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.05 ms. Allocated memory is still 1.0 GB. Free memory is still 945.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:47:54,001 INFO L168 Benchmark]: Boogie Preprocessor took 18.89 ms. Allocated memory is still 1.0 GB. Free memory was 945.0 MB in the beginning and 939.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 20:47:54,002 INFO L168 Benchmark]: RCFGBuilder took 505.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.5 MB). Free memory was 939.7 MB in the beginning and 1.2 GB in the end (delta: -218.4 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2018-10-26 20:47:54,003 INFO L168 Benchmark]: TraceAbstraction took 252.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2018-10-26 20:47:54,004 INFO L168 Benchmark]: Witness Printer took 4.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:47:54,011 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 205.57 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 945.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.05 ms. Allocated memory is still 1.0 GB. Free memory is still 945.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.89 ms. Allocated memory is still 1.0 GB. Free memory was 945.0 MB in the beginning and 939.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 505.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.5 MB). Free memory was 939.7 MB in the beginning and 1.2 GB in the end (delta: -218.4 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 252.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 25]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 10, overapproximation of someBinaryArithmeticDOUBLEoperation at line 8. Possible FailurePath: [L1] int __return_main; VAL [\old(__return_main)=2, __return_main=0] [L7] double main__x = 1.0; [L8] double main__x1 = main__x / 1.6; VAL [__return_main=0, main__x=1] [L10] COND FALSE !(main__x1 != main__x) [L19] int __tmp_1; [L20] __tmp_1 = main__x == 0 [L21] int __VERIFIER_assert__cond; [L22] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] [L23] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] [L25] __VERIFIER_error() VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 14 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-10-26 20:47:56,307 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:47:56,309 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:47:56,319 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:47:56,320 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:47:56,321 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:47:56,322 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:47:56,324 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:47:56,326 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:47:56,326 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:47:56,327 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:47:56,327 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:47:56,328 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:47:56,330 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:47:56,331 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:47:56,332 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:47:56,332 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:47:56,335 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:47:56,336 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:47:56,338 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:47:56,339 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:47:56,340 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:47:56,342 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:47:56,343 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:47:56,343 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:47:56,343 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:47:56,344 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:47:56,345 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:47:56,346 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:47:56,347 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:47:56,347 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:47:56,348 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:47:56,348 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:47:56,348 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:47:56,350 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:47:56,351 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:47:56,351 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-10-26 20:47:56,364 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:47:56,364 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:47:56,365 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:47:56,366 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 20:47:56,366 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 20:47:56,366 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 20:47:56,366 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 20:47:56,366 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 20:47:56,367 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:47:56,367 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:47:56,367 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:47:56,367 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:47:56,368 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:47:56,368 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:47:56,368 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:47:56,368 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 20:47:56,368 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 20:47:56,368 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:47:56,368 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:47:56,369 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:47:56,369 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:47:56,371 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:47:56,371 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:47:56,371 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:47:56,371 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:47:56,372 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:47:56,372 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:47:56,372 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:47:56,372 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-26 20:47:56,372 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:47:56,372 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 20:47:56,373 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 20:47:56,373 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_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan 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 -> Taipan 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 -> 14660901cc5c4d61dda44d0e62586d716b569100 [2018-10-26 20:47:56,414 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:47:56,437 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:47:56,443 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:47:56,445 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:47:56,445 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:47:56,446 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-10-26 20:47:56,508 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/data/9e94638e3/6afc113065f948af965fa502718a6029/FLAG98ada1d2f [2018-10-26 20:47:56,914 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:47:56,915 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-10-26 20:47:56,924 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/data/9e94638e3/6afc113065f948af965fa502718a6029/FLAG98ada1d2f [2018-10-26 20:47:56,945 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/data/9e94638e3/6afc113065f948af965fa502718a6029 [2018-10-26 20:47:56,949 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:47:56,951 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 20:47:56,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:47:56,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:47:56,958 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:47:56,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:47:56" (1/1) ... [2018-10-26 20:47:56,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@da2189a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:56, skipping insertion in model container [2018-10-26 20:47:56,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:47:56" (1/1) ... [2018-10-26 20:47:56,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:47:56,999 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:47:57,186 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:47:57,195 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:47:57,213 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:47:57,232 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:47:57,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:57 WrapperNode [2018-10-26 20:47:57,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:47:57,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 20:47:57,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 20:47:57,234 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 20:47:57,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:57" (1/1) ... [2018-10-26 20:47:57,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:57" (1/1) ... [2018-10-26 20:47:57,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 20:47:57,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:47:57,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:47:57,260 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:47:57,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:57" (1/1) ... [2018-10-26 20:47:57,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:57" (1/1) ... [2018-10-26 20:47:57,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:57" (1/1) ... [2018-10-26 20:47:57,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:57" (1/1) ... [2018-10-26 20:47:57,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:57" (1/1) ... [2018-10-26 20:47:57,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:57" (1/1) ... [2018-10-26 20:47:57,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:57" (1/1) ... [2018-10-26 20:47:57,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:47:57,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:47:57,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:47:57,295 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:47:57,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:47:57,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 20:47:57,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 20:47:57,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:47:57,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:47:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 20:47:57,365 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 20:47:58,515 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:47:58,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:47:58 BoogieIcfgContainer [2018-10-26 20:47:58,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:47:58,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:47:58,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:47:58,519 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:47:58,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:47:56" (1/3) ... [2018-10-26 20:47:58,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568c0789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:47:58, skipping insertion in model container [2018-10-26 20:47:58,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:47:57" (2/3) ... [2018-10-26 20:47:58,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568c0789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:47:58, skipping insertion in model container [2018-10-26 20:47:58,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:47:58" (3/3) ... [2018-10-26 20:47:58,526 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-10-26 20:47:58,538 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:47:58,548 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 20:47:58,564 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 20:47:58,605 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 20:47:58,605 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:47:58,605 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:47:58,606 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:47:58,606 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:47:58,606 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:47:58,606 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:47:58,607 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:47:58,607 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:47:58,623 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-10-26 20:47:58,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-26 20:47:58,629 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:47:58,630 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:47:58,632 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:47:58,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:47:58,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1301230683, now seen corresponding path program 1 times [2018-10-26 20:47:58,643 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:47:58,644 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-10-26 20:47:58,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:47:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:47:58,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:48:02,317 WARN L179 SmtUtils]: Spent 3.30 s on a formula simplification that was a NOOP. DAG size: 11 [2018-10-26 20:48:02,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:48:02,327 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:48:02,340 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:48:02,340 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 20:48:02,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 20:48:02,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 20:48:02,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:48:02,355 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2018-10-26 20:48:04,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:48:04,437 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2018-10-26 20:48:05,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 20:48:05,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-10-26 20:48:05,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:48:05,283 INFO L225 Difference]: With dead ends: 22 [2018-10-26 20:48:05,283 INFO L226 Difference]: Without dead ends: 11 [2018-10-26 20:48:05,287 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 20:48:05,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-26 20:48:05,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-26 20:48:05,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-26 20:48:05,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-26 20:48:05,325 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-26 20:48:05,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:48:05,326 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-26 20:48:05,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 20:48:05,326 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-26 20:48:05,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-26 20:48:05,327 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:48:05,327 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:48:05,327 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:48:05,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:48:05,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1683383028, now seen corresponding path program 1 times [2018-10-26 20:48:05,328 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:48:05,328 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_92d94741-33f2-4abe-a752-5771b2286134/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-10-26 20:48:05,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:48:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:48:05,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:48:08,196 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2018-10-26 20:48:08,197 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:141) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:928) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:767) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:339) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 39 more [2018-10-26 20:48:08,200 INFO L168 Benchmark]: Toolchain (without parser) took 11251.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -157.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 11.5 GB. [2018-10-26 20:48:08,209 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:48:08,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.16 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:48:08,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.72 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:48:08,210 INFO L168 Benchmark]: Boogie Preprocessor took 34.74 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 20:48:08,211 INFO L168 Benchmark]: RCFGBuilder took 1220.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -205.9 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. [2018-10-26 20:48:08,211 INFO L168 Benchmark]: TraceAbstraction took 9683.43 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: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:48:08,218 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 280.16 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.72 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.74 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1220.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -205.9 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9683.43 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: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...