./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_392a57b5-91ba-47b6-bf90-428833ebadd0/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/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 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_392a57b5-91ba-47b6-bf90-428833ebadd0/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/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 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 12:59:13,857 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:59:13,858 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:59:13,865 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:59:13,865 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:59:13,866 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:59:13,867 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:59:13,868 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:59:13,870 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:59:13,870 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:59:13,871 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:59:13,871 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:59:13,872 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:59:13,872 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:59:13,873 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:59:13,874 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:59:13,874 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:59:13,876 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:59:13,877 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:59:13,878 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:59:13,879 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:59:13,880 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:59:13,881 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:59:13,882 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:59:13,882 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:59:13,882 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:59:13,883 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:59:13,884 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:59:13,884 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:59:13,885 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:59:13,885 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:59:13,886 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:59:13,886 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:59:13,886 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:59:13,887 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:59:13,887 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:59:13,887 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 12:59:13,897 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:59:13,897 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:59:13,897 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:59:13,898 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 12:59:13,898 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 12:59:13,898 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 12:59:13,898 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 12:59:13,898 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 12:59:13,898 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 12:59:13,899 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 12:59:13,899 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 12:59:13,899 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 12:59:13,899 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 12:59:13,899 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:59:13,900 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:59:13,900 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 12:59:13,900 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:59:13,900 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:59:13,900 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:59:13,900 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:59:13,901 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:59:13,901 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:59:13,901 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:59:13,901 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:59:13,901 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:59:13,901 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:59:13,901 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:59:13,902 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:59:13,902 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:59:13,902 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:59:13,902 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:59:13,902 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:59:13,902 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:59:13,902 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 12:59:13,903 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:59:13,903 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 12:59:13,903 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 12:59:13,903 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_392a57b5-91ba-47b6-bf90-428833ebadd0/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 -> 34606649fc24a0c6046cbbdfba3b9ddb6bb91120 [2018-11-18 12:59:13,925 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:59:13,933 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:59:13,935 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:59:13,936 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:59:13,936 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:59:13,937 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/bin-2019/utaipan/../../sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i [2018-11-18 12:59:13,973 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/bin-2019/utaipan/data/ff0a3721e/5f01b289ce254291b3f1af6bfa9f6368/FLAG40ee1bf86 [2018-11-18 12:59:14,299 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:59:14,300 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i [2018-11-18 12:59:14,303 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/bin-2019/utaipan/data/ff0a3721e/5f01b289ce254291b3f1af6bfa9f6368/FLAG40ee1bf86 [2018-11-18 12:59:14,738 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/bin-2019/utaipan/data/ff0a3721e/5f01b289ce254291b3f1af6bfa9f6368 [2018-11-18 12:59:14,741 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:59:14,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 12:59:14,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:59:14,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:59:14,744 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:59:14,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:59:14" (1/1) ... [2018-11-18 12:59:14,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c10af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:14, skipping insertion in model container [2018-11-18 12:59:14,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:59:14" (1/1) ... [2018-11-18 12:59:14,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:59:14,766 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:59:14,894 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:59:14,896 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:59:14,909 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:59:14,919 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:59:14,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:14 WrapperNode [2018-11-18 12:59:14,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:59:14,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 12:59:14,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 12:59:14,920 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 12:59:14,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:14" (1/1) ... [2018-11-18 12:59:14,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:14" (1/1) ... [2018-11-18 12:59:14,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 12:59:14,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:59:14,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:59:14,936 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:59:14,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:14" (1/1) ... [2018-11-18 12:59:14,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:14" (1/1) ... [2018-11-18 12:59:14,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:14" (1/1) ... [2018-11-18 12:59:14,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:14" (1/1) ... [2018-11-18 12:59:14,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:14" (1/1) ... [2018-11-18 12:59:14,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:14" (1/1) ... [2018-11-18 12:59:14,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:14" (1/1) ... [2018-11-18 12:59:14,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:59:14,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:59:14,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:59:14,953 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:59:14,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/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 [2018-11-18 12:59:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:59:15,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:59:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:59:15,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:59:15,042 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:59:15,042 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:59:15,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 12:59:15,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 12:59:15,155 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:59:15,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:59:15 BoogieIcfgContainer [2018-11-18 12:59:15,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:59:15,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:59:15,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:59:15,160 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:59:15,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:59:14" (1/3) ... [2018-11-18 12:59:15,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de8e296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:59:15, skipping insertion in model container [2018-11-18 12:59:15,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:14" (2/3) ... [2018-11-18 12:59:15,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de8e296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:59:15, skipping insertion in model container [2018-11-18 12:59:15,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:59:15" (3/3) ... [2018-11-18 12:59:15,163 INFO L112 eAbstractionObserver]: Analyzing ICFG loop1_false-unreach-call.c.i [2018-11-18 12:59:15,172 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:59:15,179 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:59:15,189 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:59:15,212 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:59:15,212 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:59:15,212 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:59:15,212 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:59:15,212 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:59:15,212 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:59:15,213 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:59:15,213 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:59:15,226 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-18 12:59:15,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 12:59:15,231 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:59:15,231 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:59:15,234 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:59:15,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:59:15,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2018-11-18 12:59:15,239 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:59:15,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:59:15,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:59:15,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:59:15,271 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:59:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:59:15,310 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 12:59:15,311 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:59:15,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:59:15,311 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 12:59:15,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 12:59:15,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 12:59:15,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:59:15,326 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-11-18 12:59:15,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:59:15,341 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-11-18 12:59:15,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 12:59:15,342 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-18 12:59:15,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:59:15,347 INFO L225 Difference]: With dead ends: 32 [2018-11-18 12:59:15,348 INFO L226 Difference]: Without dead ends: 13 [2018-11-18 12:59:15,351 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 12:59:15,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-18 12:59:15,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-18 12:59:15,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-18 12:59:15,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-18 12:59:15,376 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-11-18 12:59:15,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:59:15,376 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-18 12:59:15,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 12:59:15,376 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-18 12:59:15,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 12:59:15,377 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:59:15,377 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:59:15,377 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:59:15,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:59:15,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1142988599, now seen corresponding path program 1 times [2018-11-18 12:59:15,378 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:59:15,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:59:15,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:59:15,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:59:15,379 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:59:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:59:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:59:15,409 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 12:59:15,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:59:15 BoogieIcfgContainer [2018-11-18 12:59:15,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:59:15,425 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:59:15,425 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:59:15,425 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:59:15,426 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:59:15" (3/4) ... [2018-11-18 12:59:15,429 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 12:59:15,429 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:59:15,429 INFO L168 Benchmark]: Toolchain (without parser) took 688.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 953.9 MB in the beginning and 1.1 GB in the end (delta: -146.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:59:15,431 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 980.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:59:15,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 178.03 ms. Allocated memory is still 1.0 GB. Free memory was 953.9 MB in the beginning and 943.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:59:15,431 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.51 ms. Allocated memory is still 1.0 GB. Free memory was 943.1 MB in the beginning and 940.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:59:15,432 INFO L168 Benchmark]: Boogie Preprocessor took 16.33 ms. Allocated memory is still 1.0 GB. Free memory is still 940.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:59:15,432 INFO L168 Benchmark]: RCFGBuilder took 203.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 940.4 MB in the beginning and 1.1 GB in the end (delta: -186.1 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-18 12:59:15,433 INFO L168 Benchmark]: TraceAbstraction took 268.32 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: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. [2018-11-18 12:59:15,433 INFO L168 Benchmark]: Witness Printer took 3.56 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 12:59:15,436 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 980.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 178.03 ms. Allocated memory is still 1.0 GB. Free memory was 953.9 MB in the beginning and 943.1 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 15.51 ms. Allocated memory is still 1.0 GB. Free memory was 943.1 MB in the beginning and 940.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.33 ms. Allocated memory is still 1.0 GB. Free memory is still 940.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 203.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 940.4 MB in the beginning and 1.1 GB in the end (delta: -186.1 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 268.32 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: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.56 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 12:59:16,943 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:59:16,945 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:59:16,954 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:59:16,955 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:59:16,956 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:59:16,957 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:59:16,958 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:59:16,959 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:59:16,960 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:59:16,960 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:59:16,961 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:59:16,961 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:59:16,962 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:59:16,963 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:59:16,963 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:59:16,964 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:59:16,966 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:59:16,967 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:59:16,968 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:59:16,969 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:59:16,970 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:59:16,972 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:59:16,972 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:59:16,972 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:59:16,973 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:59:16,974 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:59:16,975 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:59:16,975 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:59:16,976 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:59:16,976 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:59:16,977 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:59:16,977 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:59:16,977 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:59:16,978 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:59:16,978 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:59:16,979 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 12:59:16,990 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:59:16,990 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:59:16,991 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:59:16,991 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 12:59:16,991 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 12:59:16,992 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 12:59:16,992 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 12:59:16,992 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 12:59:16,992 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 12:59:16,992 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 12:59:16,993 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:59:16,993 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:59:16,993 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:59:16,993 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:59:16,993 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:59:16,993 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:59:16,994 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:59:16,994 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 12:59:16,994 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 12:59:16,994 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:59:16,994 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:59:16,994 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:59:16,994 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:59:16,995 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:59:16,995 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:59:16,995 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:59:16,995 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:59:16,995 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:59:16,995 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:59:16,995 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:59:16,996 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:59:16,996 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 12:59:16,996 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:59:16,996 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 12:59:16,996 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 12:59:16,996 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_392a57b5-91ba-47b6-bf90-428833ebadd0/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 -> 34606649fc24a0c6046cbbdfba3b9ddb6bb91120 [2018-11-18 12:59:17,025 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:59:17,033 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:59:17,035 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:59:17,036 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:59:17,037 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:59:17,037 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/bin-2019/utaipan/../../sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i [2018-11-18 12:59:17,076 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/bin-2019/utaipan/data/847f680c1/ab95e082ccd44826a16dadf0d2225260/FLAGcb5015126 [2018-11-18 12:59:17,406 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:59:17,406 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/sv-benchmarks/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i [2018-11-18 12:59:17,410 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/bin-2019/utaipan/data/847f680c1/ab95e082ccd44826a16dadf0d2225260/FLAGcb5015126 [2018-11-18 12:59:17,837 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/bin-2019/utaipan/data/847f680c1/ab95e082ccd44826a16dadf0d2225260 [2018-11-18 12:59:17,839 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:59:17,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 12:59:17,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:59:17,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:59:17,844 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:59:17,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:59:17" (1/1) ... [2018-11-18 12:59:17,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6461c13b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:17, skipping insertion in model container [2018-11-18 12:59:17,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:59:17" (1/1) ... [2018-11-18 12:59:17,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:59:17,867 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:59:17,984 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:59:17,987 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:59:17,999 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:59:18,008 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:59:18,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:18 WrapperNode [2018-11-18 12:59:18,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:59:18,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 12:59:18,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 12:59:18,010 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 12:59:18,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:18" (1/1) ... [2018-11-18 12:59:18,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:18" (1/1) ... [2018-11-18 12:59:18,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 12:59:18,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:59:18,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:59:18,025 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:59:18,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:18" (1/1) ... [2018-11-18 12:59:18,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:18" (1/1) ... [2018-11-18 12:59:18,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:18" (1/1) ... [2018-11-18 12:59:18,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:18" (1/1) ... [2018-11-18 12:59:18,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:18" (1/1) ... [2018-11-18 12:59:18,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:18" (1/1) ... [2018-11-18 12:59:18,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:18" (1/1) ... [2018-11-18 12:59:18,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:59:18,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:59:18,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:59:18,045 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:59:18,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/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 [2018-11-18 12:59:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:59:18,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:59:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:59:18,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:59:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:59:18,139 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:59:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 12:59:18,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 12:59:19,906 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:59:19,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:59:19 BoogieIcfgContainer [2018-11-18 12:59:19,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:59:19,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:59:19,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:59:19,911 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:59:19,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:59:17" (1/3) ... [2018-11-18 12:59:19,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1bf408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:59:19, skipping insertion in model container [2018-11-18 12:59:19,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:59:18" (2/3) ... [2018-11-18 12:59:19,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1bf408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:59:19, skipping insertion in model container [2018-11-18 12:59:19,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:59:19" (3/3) ... [2018-11-18 12:59:19,914 INFO L112 eAbstractionObserver]: Analyzing ICFG loop1_false-unreach-call.c.i [2018-11-18 12:59:19,922 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:59:19,927 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:59:19,937 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:59:19,959 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 12:59:19,959 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:59:19,960 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:59:19,960 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:59:19,960 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:59:19,960 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:59:19,960 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:59:19,960 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:59:19,960 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:59:19,973 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-18 12:59:19,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 12:59:19,977 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:59:19,977 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:59:19,979 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:59:19,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:59:19,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2018-11-18 12:59:19,985 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:59:19,985 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/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 [2018-11-18 12:59:19,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:59:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:59:20,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:59:20,247 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 12:59:20,248 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:59:20,259 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:59:20,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:59:20,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 12:59:20,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 12:59:20,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:59:20,276 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-11-18 12:59:20,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:59:20,295 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-11-18 12:59:20,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 12:59:20,296 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-18 12:59:20,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:59:20,301 INFO L225 Difference]: With dead ends: 32 [2018-11-18 12:59:20,301 INFO L226 Difference]: Without dead ends: 13 [2018-11-18 12:59:20,303 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 12:59:20,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-18 12:59:20,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-18 12:59:20,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-18 12:59:20,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-18 12:59:20,332 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-11-18 12:59:20,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:59:20,333 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-18 12:59:20,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 12:59:20,333 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-18 12:59:20,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 12:59:20,333 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:59:20,333 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:59:20,334 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:59:20,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:59:20,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1142988599, now seen corresponding path program 1 times [2018-11-18 12:59:20,334 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 12:59:20,335 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-18 12:59:20,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:59:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:59:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:59:21,501 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 12:59:21,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:59:21 BoogieIcfgContainer [2018-11-18 12:59:21,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:59:21,523 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:59:21,523 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:59:21,523 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:59:21,524 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:59:19" (3/4) ... [2018-11-18 12:59:21,526 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 12:59:21,559 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_392a57b5-91ba-47b6-bf90-428833ebadd0/bin-2019/utaipan/witness.graphml [2018-11-18 12:59:21,559 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:59:21,560 INFO L168 Benchmark]: Toolchain (without parser) took 3719.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -129.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 11.5 GB. [2018-11-18 12:59:21,561 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 12:59:21,561 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.00 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:59:21,561 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.21 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 12:59:21,562 INFO L168 Benchmark]: Boogie Preprocessor took 20.07 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:59:21,562 INFO L168 Benchmark]: RCFGBuilder took 1861.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -174.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2018-11-18 12:59:21,563 INFO L168 Benchmark]: TraceAbstraction took 1615.11 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: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 11.5 GB. [2018-11-18 12:59:21,563 INFO L168 Benchmark]: Witness Printer took 35.96 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 12:59:21,565 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 168.00 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 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 15.21 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.07 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1861.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -174.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1615.11 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: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 11.5 GB. * Witness Printer took 35.96 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, 1.5s 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, 0.7s 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...