./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.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_f071d10d-5818-40cc-a0d6-12aa55f39b84/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/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 34606649fc24a0c6046cbbdfba3b9ddb6bb91120 ..................................................................................................................................................................................................................................................................................... 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_f071d10d-5818-40cc-a0d6-12aa55f39b84/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/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 34606649fc24a0c6046cbbdfba3b9ddb6bb91120 ..................................................................................................................................................................................................................................................................................... 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 08:37:14,755 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:37:14,756 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:37:14,763 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:37:14,763 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:37:14,764 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:37:14,765 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:37:14,766 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:37:14,767 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:37:14,767 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:37:14,768 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:37:14,768 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:37:14,769 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:37:14,769 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:37:14,770 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:37:14,771 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:37:14,771 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:37:14,772 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:37:14,774 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:37:14,775 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:37:14,775 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:37:14,776 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:37:14,778 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:37:14,778 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:37:14,778 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:37:14,779 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:37:14,779 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:37:14,780 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:37:14,780 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:37:14,781 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:37:14,781 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:37:14,782 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:37:14,782 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:37:14,782 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:37:14,783 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:37:14,783 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:37:14,783 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 08:37:14,793 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:37:14,794 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:37:14,794 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 08:37:14,794 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 08:37:14,795 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 08:37:14,795 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 08:37:14,795 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 08:37:14,795 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:37:14,795 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 08:37:14,795 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 08:37:14,796 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 08:37:14,796 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:37:14,796 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 08:37:14,796 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 08:37:14,796 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 08:37:14,796 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 08:37:14,796 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:37:14,796 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:37:14,797 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 08:37:14,797 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:37:14,797 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:37:14,797 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 08:37:14,797 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 08:37:14,797 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 08:37:14,797 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:37:14,798 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 08:37:14,798 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 08:37:14,798 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 08:37:14,798 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 08:37:14,798 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 08:37:14,798 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_f071d10d-5818-40cc-a0d6-12aa55f39b84/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 -> 34606649fc24a0c6046cbbdfba3b9ddb6bb91120 [2018-11-18 08:37:14,820 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:37:14,828 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:37:14,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:37:14,831 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:37:14,831 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:37:14,832 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/bin-2019/uautomizer/../../sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i [2018-11-18 08:37:14,866 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/bin-2019/uautomizer/data/133f6a07c/5382043ef70940d7af487528613f73e0/FLAGc8b974610 [2018-11-18 08:37:15,163 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:37:15,163 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i [2018-11-18 08:37:15,167 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/bin-2019/uautomizer/data/133f6a07c/5382043ef70940d7af487528613f73e0/FLAGc8b974610 [2018-11-18 08:37:15,178 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/bin-2019/uautomizer/data/133f6a07c/5382043ef70940d7af487528613f73e0 [2018-11-18 08:37:15,180 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:37:15,181 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 08:37:15,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:37:15,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:37:15,184 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:37:15,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:37:15" (1/1) ... [2018-11-18 08:37:15,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a19fc73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:15, skipping insertion in model container [2018-11-18 08:37:15,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:37:15" (1/1) ... [2018-11-18 08:37:15,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:37:15,208 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:37:15,313 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:37:15,316 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:37:15,329 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:37:15,338 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:37:15,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:15 WrapperNode [2018-11-18 08:37:15,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:37:15,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:37:15,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:37:15,339 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:37:15,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:15" (1/1) ... [2018-11-18 08:37:15,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:15" (1/1) ... [2018-11-18 08:37:15,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:15" (1/1) ... [2018-11-18 08:37:15,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:15" (1/1) ... [2018-11-18 08:37:15,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:15" (1/1) ... [2018-11-18 08:37:15,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:15" (1/1) ... [2018-11-18 08:37:15,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:15" (1/1) ... [2018-11-18 08:37:15,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:37:15,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:37:15,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:37:15,356 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:37:15,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/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 08:37:15,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 08:37:15,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:37:15,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 08:37:15,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 08:37:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 08:37:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 08:37:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 08:37:15,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-18 08:37:15,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 08:37:15,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 08:37:15,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 08:37:15,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:37:15,514 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:37:15,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:37:15 BoogieIcfgContainer [2018-11-18 08:37:15,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:37:15,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 08:37:15,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 08:37:15,518 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 08:37:15,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:37:15" (1/3) ... [2018-11-18 08:37:15,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8c4b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:37:15, skipping insertion in model container [2018-11-18 08:37:15,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:15" (2/3) ... [2018-11-18 08:37:15,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8c4b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:37:15, skipping insertion in model container [2018-11-18 08:37:15,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:37:15" (3/3) ... [2018-11-18 08:37:15,521 INFO L112 eAbstractionObserver]: Analyzing ICFG loop1_false-unreach-call.c.i [2018-11-18 08:37:15,526 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 08:37:15,530 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 08:37:15,538 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 08:37:15,557 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 08:37:15,557 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 08:37:15,557 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 08:37:15,557 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 08:37:15,558 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:37:15,558 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:37:15,558 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 08:37:15,558 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:37:15,558 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 08:37:15,572 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-18 08:37:15,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 08:37:15,576 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:37:15,577 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:37:15,579 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:37:15,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:37:15,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2018-11-18 08:37:15,583 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:37:15,584 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:37:15,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:37:15,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:37:15,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:37:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:37:15,651 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 08:37:15,652 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:37:15,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 08:37:15,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 08:37:15,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 08:37:15,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:37:15,664 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-11-18 08:37:15,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:37:15,677 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-11-18 08:37:15,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 08:37:15,678 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-18 08:37:15,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:37:15,684 INFO L225 Difference]: With dead ends: 32 [2018-11-18 08:37:15,685 INFO L226 Difference]: Without dead ends: 13 [2018-11-18 08:37:15,687 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 08:37:15,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-18 08:37:15,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-18 08:37:15,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-18 08:37:15,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-18 08:37:15,710 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-11-18 08:37:15,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:37:15,710 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-18 08:37:15,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 08:37:15,710 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-18 08:37:15,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 08:37:15,710 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:37:15,711 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:37:15,711 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:37:15,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:37:15,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1142988599, now seen corresponding path program 1 times [2018-11-18 08:37:15,711 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:37:15,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:37:15,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:37:15,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:37:15,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:37:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:37:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:37:15,745 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 08:37:15,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:37:15 BoogieIcfgContainer [2018-11-18 08:37:15,763 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 08:37:15,763 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 08:37:15,763 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 08:37:15,764 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 08:37:15,764 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:37:15" (3/4) ... [2018-11-18 08:37:15,766 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 08:37:15,766 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 08:37:15,767 INFO L168 Benchmark]: Toolchain (without parser) took 586.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 958.1 MB in the beginning and 1.1 GB in the end (delta: -136.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. [2018-11-18 08:37:15,768 INFO L168 Benchmark]: CDTParser took 0.11 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 08:37:15,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.77 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 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 08:37:15,768 INFO L168 Benchmark]: Boogie Preprocessor took 16.92 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 08:37:15,769 INFO L168 Benchmark]: RCFGBuilder took 158.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -177.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-18 08:37:15,769 INFO L168 Benchmark]: TraceAbstraction took 247.53 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: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:37:15,770 INFO L168 Benchmark]: Witness Printer took 2.90 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. [2018-11-18 08:37:15,772 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 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 157.77 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 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 16.92 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 158.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -177.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 247.53 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: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.90 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: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 24. Possible FailurePath: [L15] float x = __VERIFIER_nondet_float() ; [L16] float exp = 1.0 ; [L17] float term = 1.0 ; [L18] unsigned int count = 1 ; [L19] float result = 2*(1/(1-x)) ; [L20] int temp ; VAL [count=1, exp=1, term=1, x=2] [L22] COND TRUE 1 [L24] term = term * (x/count) [L25] exp = exp + term [L26] count++ [L28] temp = __VERIFIER_nondet_int() [L29] COND TRUE temp ==0 VAL [count=2, temp=0, x=2] [L32] CALL __VERIFIER_assert( result >= exp ) VAL [\old(cond)=0] [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 20 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=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 08:37:17,173 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:37:17,174 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:37:17,181 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:37:17,181 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:37:17,181 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:37:17,182 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:37:17,183 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:37:17,184 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:37:17,185 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:37:17,185 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:37:17,186 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:37:17,186 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:37:17,187 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:37:17,188 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:37:17,188 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:37:17,189 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:37:17,190 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:37:17,191 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:37:17,192 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:37:17,193 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:37:17,194 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:37:17,195 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:37:17,195 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:37:17,196 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:37:17,196 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:37:17,197 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:37:17,197 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:37:17,198 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:37:17,199 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:37:17,199 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:37:17,199 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:37:17,199 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:37:17,199 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:37:17,200 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:37:17,201 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:37:17,201 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 08:37:17,211 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:37:17,211 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:37:17,211 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 08:37:17,211 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 08:37:17,212 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 08:37:17,212 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 08:37:17,212 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 08:37:17,212 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:37:17,212 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 08:37:17,212 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 08:37:17,213 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:37:17,213 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 08:37:17,213 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 08:37:17,213 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 08:37:17,213 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 08:37:17,213 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 08:37:17,213 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 08:37:17,213 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:37:17,214 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:37:17,214 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 08:37:17,214 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:37:17,214 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:37:17,214 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 08:37:17,214 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 08:37:17,214 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 08:37:17,215 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:37:17,215 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 08:37:17,215 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 08:37:17,215 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 08:37:17,215 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 08:37:17,215 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 08:37:17,215 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 08:37:17,216 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_f071d10d-5818-40cc-a0d6-12aa55f39b84/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 -> 34606649fc24a0c6046cbbdfba3b9ddb6bb91120 [2018-11-18 08:37:17,243 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:37:17,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:37:17,252 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:37:17,253 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:37:17,253 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:37:17,254 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/bin-2019/uautomizer/../../sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i [2018-11-18 08:37:17,287 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/bin-2019/uautomizer/data/122862ab7/645f18e5e0be4bf38b1cc940284f1c3a/FLAG3f7346340 [2018-11-18 08:37:17,575 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:37:17,575 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i [2018-11-18 08:37:17,579 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/bin-2019/uautomizer/data/122862ab7/645f18e5e0be4bf38b1cc940284f1c3a/FLAG3f7346340 [2018-11-18 08:37:17,588 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/bin-2019/uautomizer/data/122862ab7/645f18e5e0be4bf38b1cc940284f1c3a [2018-11-18 08:37:17,590 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:37:17,592 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 08:37:17,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:37:17,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:37:17,595 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:37:17,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:37:17" (1/1) ... [2018-11-18 08:37:17,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37646f78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:17, skipping insertion in model container [2018-11-18 08:37:17,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:37:17" (1/1) ... [2018-11-18 08:37:17,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:37:17,619 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:37:17,736 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:37:17,740 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:37:17,752 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:37:17,760 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:37:17,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:17 WrapperNode [2018-11-18 08:37:17,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:37:17,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:37:17,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:37:17,761 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:37:17,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:17" (1/1) ... [2018-11-18 08:37:17,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:17" (1/1) ... [2018-11-18 08:37:17,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:17" (1/1) ... [2018-11-18 08:37:17,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:17" (1/1) ... [2018-11-18 08:37:17,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:17" (1/1) ... [2018-11-18 08:37:17,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:17" (1/1) ... [2018-11-18 08:37:17,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:17" (1/1) ... [2018-11-18 08:37:17,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:37:17,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:37:17,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:37:17,784 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:37:17,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/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 08:37:17,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 08:37:17,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:37:17,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 08:37:17,851 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 08:37:17,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 08:37:17,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 08:37:17,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 08:37:17,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-18 08:37:17,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 08:37:17,851 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 08:37:17,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 08:37:17,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:37:19,245 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:37:19,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:37:19 BoogieIcfgContainer [2018-11-18 08:37:19,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:37:19,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 08:37:19,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 08:37:19,248 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 08:37:19,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:37:17" (1/3) ... [2018-11-18 08:37:19,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6787023f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:37:19, skipping insertion in model container [2018-11-18 08:37:19,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:17" (2/3) ... [2018-11-18 08:37:19,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6787023f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:37:19, skipping insertion in model container [2018-11-18 08:37:19,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:37:19" (3/3) ... [2018-11-18 08:37:19,251 INFO L112 eAbstractionObserver]: Analyzing ICFG loop1_false-unreach-call.c.i [2018-11-18 08:37:19,259 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 08:37:19,264 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 08:37:19,272 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 08:37:19,289 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 08:37:19,290 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 08:37:19,290 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 08:37:19,290 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 08:37:19,290 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:37:19,290 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:37:19,290 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 08:37:19,290 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:37:19,291 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 08:37:19,303 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-18 08:37:19,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 08:37:19,306 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:37:19,307 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:37:19,308 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:37:19,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:37:19,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2018-11-18 08:37:19,314 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:37:19,314 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/bin-2019/uautomizer/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 [2018-11-18 08:37:19,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:37:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:37:19,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:37:19,551 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 08:37:19,551 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:37:19,561 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:37:19,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 08:37:19,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 08:37:19,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 08:37:19,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:37:19,573 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-11-18 08:37:19,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:37:19,585 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-11-18 08:37:19,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 08:37:19,586 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-18 08:37:19,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:37:19,591 INFO L225 Difference]: With dead ends: 32 [2018-11-18 08:37:19,591 INFO L226 Difference]: Without dead ends: 13 [2018-11-18 08:37:19,593 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 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 08:37:19,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-18 08:37:19,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-18 08:37:19,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-18 08:37:19,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-18 08:37:19,614 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-11-18 08:37:19,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:37:19,615 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-18 08:37:19,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 08:37:19,615 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-18 08:37:19,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 08:37:19,615 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:37:19,615 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:37:19,616 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:37:19,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:37:19,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1142988599, now seen corresponding path program 1 times [2018-11-18 08:37:19,616 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:37:19,616 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/bin-2019/uautomizer/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 [2018-11-18 08:37:19,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:37:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:37:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:37:20,634 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 08:37:20,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:37:20 BoogieIcfgContainer [2018-11-18 08:37:20,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 08:37:20,654 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 08:37:20,655 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 08:37:20,655 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 08:37:20,655 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:37:19" (3/4) ... [2018-11-18 08:37:20,656 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 08:37:20,683 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f071d10d-5818-40cc-a0d6-12aa55f39b84/bin-2019/uautomizer/witness.graphml [2018-11-18 08:37:20,683 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 08:37:20,684 INFO L168 Benchmark]: Toolchain (without parser) took 3092.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 951.8 MB in the beginning and 1.1 GB in the end (delta: -123.6 MB). Peak memory consumption was 8.0 MB. Max. memory is 11.5 GB. [2018-11-18 08:37:20,685 INFO L168 Benchmark]: CDTParser took 0.12 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. [2018-11-18 08:37:20,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.63 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:37:20,686 INFO L168 Benchmark]: Boogie Preprocessor took 22.88 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 08:37:20,686 INFO L168 Benchmark]: RCFGBuilder took 1461.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -169.1 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:37:20,687 INFO L168 Benchmark]: TraceAbstraction took 1408.19 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: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. [2018-11-18 08:37:20,687 INFO L168 Benchmark]: Witness Printer took 28.74 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. [2018-11-18 08:37:20,689 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 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 168.63 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.88 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1461.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -169.1 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1408.19 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: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. * Witness Printer took 28.74 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: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] float x = __VERIFIER_nondet_float() ; [L16] float exp = 1.0 ; [L17] float term = 1.0 ; [L18] unsigned int count = 1 ; [L19] float result = 2*(1/(1-x)) ; [L20] int temp ; VAL [count=1, exp=1.0, result=-273.0666809082031, term=1.0, x=1.00732421875] [L22] COND TRUE 1 [L24] term = term * (x/count) [L25] exp = exp + term [L26] count++ [L28] temp = __VERIFIER_nondet_int() [L29] COND TRUE temp ==0 VAL [count=2, exp=2.00732421875, result=-273.0666809082031, temp=0, term=1.00732421875, x=1.00732421875] [L32] CALL __VERIFIER_assert( result >= exp ) VAL [\old(cond)=0] [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. UNSAFE Result, 1.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 0.6s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 1 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...