./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_square_false-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/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 5cdc4d12f446be57385f35c672efbdd6980b00fa .......................................................................................................................................................................................................................................... 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_110b44c2-8855-4c5e-ace5-59074be14588/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/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 5cdc4d12f446be57385f35c672efbdd6980b00fa .................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 23:51:36,086 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 23:51:36,086 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 23:51:36,093 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 23:51:36,093 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 23:51:36,093 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 23:51:36,094 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 23:51:36,095 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 23:51:36,095 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 23:51:36,096 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 23:51:36,096 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 23:51:36,096 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 23:51:36,097 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 23:51:36,097 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 23:51:36,098 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 23:51:36,098 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 23:51:36,099 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 23:51:36,099 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 23:51:36,100 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 23:51:36,101 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 23:51:36,102 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 23:51:36,102 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 23:51:36,103 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 23:51:36,103 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 23:51:36,103 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 23:51:36,104 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 23:51:36,104 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 23:51:36,105 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 23:51:36,105 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 23:51:36,106 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 23:51:36,106 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 23:51:36,106 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 23:51:36,106 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 23:51:36,106 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 23:51:36,107 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 23:51:36,107 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 23:51:36,107 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 23:51:36,114 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 23:51:36,114 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 23:51:36,115 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 23:51:36,115 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 23:51:36,115 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 23:51:36,115 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 23:51:36,115 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 23:51:36,115 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 23:51:36,115 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 23:51:36,115 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 23:51:36,115 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 23:51:36,115 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 23:51:36,116 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 23:51:36,116 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 23:51:36,116 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 23:51:36,116 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 23:51:36,116 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 23:51:36,116 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 23:51:36,116 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 23:51:36,116 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 23:51:36,117 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 23:51:36,117 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 23:51:36,117 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 23:51:36,117 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 23:51:36,117 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 23:51:36,117 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 23:51:36,117 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 23:51:36,117 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 23:51:36,117 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 23:51:36,117 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 23:51:36,117 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 23:51:36,117 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 23:51:36,118 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 23:51:36,118 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 23:51:36,118 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 23:51:36,118 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 23:51:36,118 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_110b44c2-8855-4c5e-ace5-59074be14588/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 -> 5cdc4d12f446be57385f35c672efbdd6980b00fa [2018-12-02 23:51:36,135 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 23:51:36,141 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 23:51:36,143 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 23:51:36,144 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 23:51:36,144 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 23:51:36,145 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/inv_square_false-unreach-call_true-termination.c [2018-12-02 23:51:36,180 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/bin-2019/utaipan/data/584e93cdc/6320d9a83bf3438797c4fe05f7e95562/FLAGc3b469fe2 [2018-12-02 23:51:36,587 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 23:51:36,587 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/sv-benchmarks/c/float-benchs/inv_square_false-unreach-call_true-termination.c [2018-12-02 23:51:36,590 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/bin-2019/utaipan/data/584e93cdc/6320d9a83bf3438797c4fe05f7e95562/FLAGc3b469fe2 [2018-12-02 23:51:36,599 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/bin-2019/utaipan/data/584e93cdc/6320d9a83bf3438797c4fe05f7e95562 [2018-12-02 23:51:36,601 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 23:51:36,601 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 23:51:36,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 23:51:36,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 23:51:36,604 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 23:51:36,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:51:36" (1/1) ... [2018-12-02 23:51:36,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba821c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:36, skipping insertion in model container [2018-12-02 23:51:36,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:51:36" (1/1) ... [2018-12-02 23:51:36,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 23:51:36,618 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 23:51:36,699 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 23:51:36,701 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 23:51:36,709 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 23:51:36,717 INFO L195 MainTranslator]: Completed translation [2018-12-02 23:51:36,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:36 WrapperNode [2018-12-02 23:51:36,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 23:51:36,718 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 23:51:36,718 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 23:51:36,718 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 23:51:36,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:36" (1/1) ... [2018-12-02 23:51:36,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:36" (1/1) ... [2018-12-02 23:51:36,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 23:51:36,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 23:51:36,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 23:51:36,730 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 23:51:36,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:36" (1/1) ... [2018-12-02 23:51:36,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:36" (1/1) ... [2018-12-02 23:51:36,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:36" (1/1) ... [2018-12-02 23:51:36,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:36" (1/1) ... [2018-12-02 23:51:36,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:36" (1/1) ... [2018-12-02 23:51:36,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:36" (1/1) ... [2018-12-02 23:51:36,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:36" (1/1) ... [2018-12-02 23:51:36,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 23:51:36,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 23:51:36,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 23:51:36,768 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 23:51:36,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/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 [2018-12-02 23:51:36,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 23:51:36,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 23:51:36,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 23:51:36,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 23:51:36,801 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 23:51:36,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 23:51:36,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-02 23:51:36,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-02 23:51:36,877 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 23:51:36,878 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-02 23:51:36,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:51:36 BoogieIcfgContainer [2018-12-02 23:51:36,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 23:51:36,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 23:51:36,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 23:51:36,880 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 23:51:36,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:51:36" (1/3) ... [2018-12-02 23:51:36,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48110cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:51:36, skipping insertion in model container [2018-12-02 23:51:36,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:36" (2/3) ... [2018-12-02 23:51:36,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48110cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:51:36, skipping insertion in model container [2018-12-02 23:51:36,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:51:36" (3/3) ... [2018-12-02 23:51:36,883 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_square_false-unreach-call_true-termination.c [2018-12-02 23:51:36,888 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 23:51:36,892 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 23:51:36,902 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 23:51:36,920 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 23:51:36,920 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 23:51:36,920 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 23:51:36,921 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 23:51:36,921 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 23:51:36,921 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 23:51:36,921 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 23:51:36,921 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 23:51:36,931 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-12-02 23:51:36,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 23:51:36,935 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:51:36,935 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:51:36,937 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 23:51:36,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:51:36,940 INFO L82 PathProgramCache]: Analyzing trace with hash 697060158, now seen corresponding path program 1 times [2018-12-02 23:51:36,942 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 23:51:36,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:51:36,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:51:36,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 23:51:36,971 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 23:51:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 23:51:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 23:51:37,008 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 23:51:37,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 11:51:37 BoogieIcfgContainer [2018-12-02 23:51:37,022 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 23:51:37,022 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 23:51:37,022 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 23:51:37,023 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 23:51:37,023 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:51:36" (3/4) ... [2018-12-02 23:51:37,026 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 23:51:37,026 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 23:51:37,026 INFO L168 Benchmark]: Toolchain (without parser) took 425.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -134.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 23:51:37,027 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. [2018-12-02 23:51:37,028 INFO L168 Benchmark]: CACSL2BoogieTranslator took 115.83 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 947.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 23:51:37,028 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.80 ms. Allocated memory is still 1.0 GB. Free memory is still 947.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 23:51:37,029 INFO L168 Benchmark]: Boogie Preprocessor took 37.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -174.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2018-12-02 23:51:37,029 INFO L168 Benchmark]: RCFGBuilder took 110.33 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: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 11.5 GB. [2018-12-02 23:51:37,030 INFO L168 Benchmark]: TraceAbstraction took 143.39 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: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2018-12-02 23:51:37,030 INFO L168 Benchmark]: Witness Printer took 3.45 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. [2018-12-02 23:51:37,032 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 115.83 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 947.0 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 11.80 ms. Allocated memory is still 1.0 GB. Free memory is still 947.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -174.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 110.33 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: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 143.39 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: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.45 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 someBinaryFLOATComparisonOperation at line 19, overapproximation of someBinaryArithmeticFLOAToperation at line 18. Possible FailurePath: [L12] float x, y, z; [L14] x = __VERIFIER_nondet_float() [L17] COND TRUE x != 0.f [L18] y = x * x VAL [x=2] [L19] CALL __VERIFIER_assert(y != 0.f) 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, 19 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=19occurred 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, 10 NumberOfCodeBlocks, 10 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 0.1.23-635dfa2 [2018-12-02 23:51:38,404 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 23:51:38,405 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 23:51:38,411 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 23:51:38,411 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 23:51:38,412 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 23:51:38,412 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 23:51:38,413 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 23:51:38,414 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 23:51:38,414 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 23:51:38,415 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 23:51:38,415 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 23:51:38,415 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 23:51:38,416 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 23:51:38,416 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 23:51:38,417 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 23:51:38,417 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 23:51:38,418 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 23:51:38,419 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 23:51:38,420 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 23:51:38,420 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 23:51:38,421 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 23:51:38,422 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 23:51:38,422 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 23:51:38,422 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 23:51:38,423 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 23:51:38,423 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 23:51:38,424 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 23:51:38,424 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 23:51:38,425 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 23:51:38,425 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 23:51:38,425 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 23:51:38,425 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 23:51:38,426 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 23:51:38,426 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 23:51:38,426 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 23:51:38,427 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-02 23:51:38,434 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 23:51:38,434 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 23:51:38,435 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 23:51:38,435 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 23:51:38,435 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 23:51:38,435 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 23:51:38,435 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 23:51:38,435 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 23:51:38,436 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 23:51:38,436 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 23:51:38,436 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 23:51:38,436 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 23:51:38,436 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 23:51:38,436 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 23:51:38,437 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 23:51:38,437 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 23:51:38,437 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 23:51:38,437 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 23:51:38,437 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 23:51:38,437 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 23:51:38,437 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 23:51:38,437 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 23:51:38,438 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 23:51:38,438 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 23:51:38,438 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 23:51:38,438 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 23:51:38,438 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 23:51:38,438 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 23:51:38,438 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 23:51:38,439 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 23:51:38,439 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 23:51:38,439 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-02 23:51:38,439 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 23:51:38,439 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 23:51:38,439 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-02 23:51:38,439 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_110b44c2-8855-4c5e-ace5-59074be14588/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 -> 5cdc4d12f446be57385f35c672efbdd6980b00fa [2018-12-02 23:51:38,457 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 23:51:38,464 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 23:51:38,466 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 23:51:38,467 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 23:51:38,467 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 23:51:38,468 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/inv_square_false-unreach-call_true-termination.c [2018-12-02 23:51:38,502 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/bin-2019/utaipan/data/bb70f2634/99871c4d6729484396db964e5b11f52d/FLAG1e674d7ce [2018-12-02 23:51:38,899 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 23:51:38,900 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/sv-benchmarks/c/float-benchs/inv_square_false-unreach-call_true-termination.c [2018-12-02 23:51:38,904 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/bin-2019/utaipan/data/bb70f2634/99871c4d6729484396db964e5b11f52d/FLAG1e674d7ce [2018-12-02 23:51:38,913 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/bin-2019/utaipan/data/bb70f2634/99871c4d6729484396db964e5b11f52d [2018-12-02 23:51:38,914 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 23:51:38,915 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 23:51:38,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 23:51:38,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 23:51:38,919 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 23:51:38,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:51:38" (1/1) ... [2018-12-02 23:51:38,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@265c0857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:38, skipping insertion in model container [2018-12-02 23:51:38,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:51:38" (1/1) ... [2018-12-02 23:51:38,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 23:51:38,940 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 23:51:39,033 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 23:51:39,037 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 23:51:39,045 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 23:51:39,054 INFO L195 MainTranslator]: Completed translation [2018-12-02 23:51:39,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:39 WrapperNode [2018-12-02 23:51:39,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 23:51:39,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 23:51:39,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 23:51:39,055 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 23:51:39,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:39" (1/1) ... [2018-12-02 23:51:39,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:39" (1/1) ... [2018-12-02 23:51:39,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 23:51:39,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 23:51:39,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 23:51:39,068 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 23:51:39,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:39" (1/1) ... [2018-12-02 23:51:39,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:39" (1/1) ... [2018-12-02 23:51:39,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:39" (1/1) ... [2018-12-02 23:51:39,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:39" (1/1) ... [2018-12-02 23:51:39,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:39" (1/1) ... [2018-12-02 23:51:39,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:39" (1/1) ... [2018-12-02 23:51:39,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:39" (1/1) ... [2018-12-02 23:51:39,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 23:51:39,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 23:51:39,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 23:51:39,082 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 23:51:39,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/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 [2018-12-02 23:51:39,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 23:51:39,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 23:51:39,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 23:51:39,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 23:51:39,145 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 23:51:39,145 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 23:51:39,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-02 23:51:39,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-02 23:51:39,782 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 23:51:39,782 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-02 23:51:39,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:51:39 BoogieIcfgContainer [2018-12-02 23:51:39,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 23:51:39,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 23:51:39,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 23:51:39,785 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 23:51:39,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:51:38" (1/3) ... [2018-12-02 23:51:39,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@902a23e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:51:39, skipping insertion in model container [2018-12-02 23:51:39,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:51:39" (2/3) ... [2018-12-02 23:51:39,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@902a23e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:51:39, skipping insertion in model container [2018-12-02 23:51:39,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:51:39" (3/3) ... [2018-12-02 23:51:39,787 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_square_false-unreach-call_true-termination.c [2018-12-02 23:51:39,792 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 23:51:39,796 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 23:51:39,805 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 23:51:39,821 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 23:51:39,821 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 23:51:39,821 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 23:51:39,821 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 23:51:39,822 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 23:51:39,822 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 23:51:39,822 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 23:51:39,822 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 23:51:39,822 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 23:51:39,831 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-12-02 23:51:39,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 23:51:39,835 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 23:51:39,835 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 23:51:39,836 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 23:51:39,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 23:51:39,840 INFO L82 PathProgramCache]: Analyzing trace with hash 697060158, now seen corresponding path program 1 times [2018-12-02 23:51:39,842 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 23:51:39,842 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/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 [2018-12-02 23:51:39,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 23:51:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 23:51:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 23:51:39,978 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 23:51:39,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 11:51:39 BoogieIcfgContainer [2018-12-02 23:51:39,993 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 23:51:39,993 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 23:51:39,993 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 23:51:39,993 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 23:51:39,993 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:51:39" (3/4) ... [2018-12-02 23:51:39,994 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-02 23:51:40,019 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_110b44c2-8855-4c5e-ace5-59074be14588/bin-2019/utaipan/witness.graphml [2018-12-02 23:51:40,019 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 23:51:40,019 INFO L168 Benchmark]: Toolchain (without parser) took 1104.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -136.3 MB). Peak memory consumption was 569.5 kB. Max. memory is 11.5 GB. [2018-12-02 23:51:40,020 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 23:51:40,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 138.34 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 934.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 23:51:40,021 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.29 ms. Allocated memory is still 1.0 GB. Free memory is still 934.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 23:51:40,021 INFO L168 Benchmark]: Boogie Preprocessor took 13.20 ms. Allocated memory is still 1.0 GB. Free memory was 934.0 MB in the beginning and 928.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-02 23:51:40,021 INFO L168 Benchmark]: RCFGBuilder took 701.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -178.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2018-12-02 23:51:40,022 INFO L168 Benchmark]: TraceAbstraction took 209.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2018-12-02 23:51:40,022 INFO L168 Benchmark]: Witness Printer took 26.12 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-02 23:51:40,024 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 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 138.34 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 934.0 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 13.29 ms. Allocated memory is still 1.0 GB. Free memory is still 934.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.20 ms. Allocated memory is still 1.0 GB. Free memory was 934.0 MB in the beginning and 928.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 701.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -178.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 209.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * Witness Printer took 26.12 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: 6.8 MB). Peak memory consumption was 6.8 MB. 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: [L12] float x, y, z; [L14] x = __VERIFIER_nondet_float() [L17] COND TRUE x != 0.f [L18] y = x * x VAL [x=0.000000000000000000000000000000000000000000001401298464324817, y=0.0] [L19] CALL __VERIFIER_assert(y != 0.f) 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, 19 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=19occurred 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, 10 NumberOfCodeBlocks, 10 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 proved your program to be incorrect! Received shutdown request...