./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i --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_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/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 1d363a30f559764c47bcb73d637f2d7196a1b97b ....................................................................................................................................................................................................................................................... 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_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/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 1d363a30f559764c47bcb73d637f2d7196a1b97b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 16:25:49,069 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 16:25:49,070 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 16:25:49,076 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 16:25:49,076 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 16:25:49,077 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 16:25:49,078 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 16:25:49,078 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 16:25:49,079 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 16:25:49,080 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 16:25:49,080 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 16:25:49,080 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 16:25:49,081 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 16:25:49,081 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 16:25:49,082 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 16:25:49,082 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 16:25:49,083 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 16:25:49,084 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 16:25:49,085 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 16:25:49,086 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 16:25:49,086 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 16:25:49,087 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 16:25:49,088 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 16:25:49,088 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 16:25:49,088 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 16:25:49,089 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 16:25:49,089 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 16:25:49,090 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 16:25:49,090 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 16:25:49,091 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 16:25:49,091 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 16:25:49,091 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 16:25:49,091 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 16:25:49,091 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 16:25:49,092 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 16:25:49,092 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 16:25:49,092 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-08 16:25:49,100 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 16:25:49,100 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 16:25:49,100 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 16:25:49,100 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 16:25:49,101 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 16:25:49,101 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 16:25:49,101 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 16:25:49,101 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-08 16:25:49,101 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 16:25:49,101 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 16:25:49,101 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-08 16:25:49,102 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-08 16:25:49,102 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 16:25:49,102 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 16:25:49,102 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 16:25:49,102 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 16:25:49,103 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 16:25:49,103 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 16:25:49,103 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 16:25:49,103 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 16:25:49,103 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 16:25:49,103 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 16:25:49,103 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 16:25:49,103 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 16:25:49,104 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 16:25:49,104 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 16:25:49,104 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 16:25:49,104 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 16:25:49,104 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 16:25:49,104 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 16:25:49,104 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 16:25:49,104 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 16:25:49,105 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-08 16:25:49,105 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 16:25:49,105 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 16:25:49,105 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-08 16:25:49,105 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_d36a8800-752a-4a5d-ae10-7aec7cb94f16/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 -> 1d363a30f559764c47bcb73d637f2d7196a1b97b [2018-12-08 16:25:49,123 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 16:25:49,130 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 16:25:49,132 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 16:25:49,133 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 16:25:49,133 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 16:25:49,133 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i [2018-12-08 16:25:49,168 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/data/382a1ad6f/608da6323f4240f68ddbd47d0c23fc07/FLAG91825d0f5 [2018-12-08 16:25:49,544 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 16:25:49,545 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i [2018-12-08 16:25:49,548 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/data/382a1ad6f/608da6323f4240f68ddbd47d0c23fc07/FLAG91825d0f5 [2018-12-08 16:25:49,926 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/data/382a1ad6f/608da6323f4240f68ddbd47d0c23fc07 [2018-12-08 16:25:49,932 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 16:25:49,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 16:25:49,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 16:25:49,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 16:25:49,943 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 16:25:49,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 04:25:49" (1/1) ... [2018-12-08 16:25:49,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@409ee820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:49, skipping insertion in model container [2018-12-08 16:25:49,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 04:25:49" (1/1) ... [2018-12-08 16:25:49,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 16:25:49,970 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 16:25:50,055 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 16:25:50,057 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 16:25:50,065 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 16:25:50,073 INFO L195 MainTranslator]: Completed translation [2018-12-08 16:25:50,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:50 WrapperNode [2018-12-08 16:25:50,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 16:25:50,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 16:25:50,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 16:25:50,074 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 16:25:50,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:50" (1/1) ... [2018-12-08 16:25:50,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:50" (1/1) ... [2018-12-08 16:25:50,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 16:25:50,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 16:25:50,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 16:25:50,091 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 16:25:50,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:50" (1/1) ... [2018-12-08 16:25:50,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:50" (1/1) ... [2018-12-08 16:25:50,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:50" (1/1) ... [2018-12-08 16:25:50,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:50" (1/1) ... [2018-12-08 16:25:50,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:50" (1/1) ... [2018-12-08 16:25:50,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:50" (1/1) ... [2018-12-08 16:25:50,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:50" (1/1) ... [2018-12-08 16:25:50,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 16:25:50,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 16:25:50,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 16:25:50,135 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 16:25:50,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/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 [2018-12-08 16:25:50,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 16:25:50,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 16:25:50,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 16:25:50,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 16:25:50,167 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 16:25:50,167 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 16:25:50,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-08 16:25:50,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-08 16:25:50,241 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 16:25:50,241 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-08 16:25:50,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 04:25:50 BoogieIcfgContainer [2018-12-08 16:25:50,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 16:25:50,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 16:25:50,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 16:25:50,244 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 16:25:50,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 04:25:49" (1/3) ... [2018-12-08 16:25:50,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ba8eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 04:25:50, skipping insertion in model container [2018-12-08 16:25:50,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:50" (2/3) ... [2018-12-08 16:25:50,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ba8eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 04:25:50, skipping insertion in model container [2018-12-08 16:25:50,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 04:25:50" (3/3) ... [2018-12-08 16:25:50,246 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_bad_false-unreach-call.i [2018-12-08 16:25:50,251 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 16:25:50,255 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 16:25:50,265 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 16:25:50,283 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 16:25:50,284 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 16:25:50,284 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 16:25:50,284 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 16:25:50,284 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 16:25:50,284 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 16:25:50,284 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 16:25:50,284 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 16:25:50,294 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-08 16:25:50,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-08 16:25:50,297 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:25:50,298 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:25:50,299 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:25:50,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:25:50,302 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-12-08 16:25:50,304 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:25:50,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:25:50,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:25:50,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:25:50,332 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:25:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:25:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:25:50,366 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 16:25:50,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 04:25:50 BoogieIcfgContainer [2018-12-08 16:25:50,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 16:25:50,380 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 16:25:50,380 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 16:25:50,380 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 16:25:50,380 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 04:25:50" (3/4) ... [2018-12-08 16:25:50,383 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 16:25:50,383 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 16:25:50,383 INFO L168 Benchmark]: Toolchain (without parser) took 450.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 59.8 MB). Free memory was 961.4 MB in the beginning and 1.0 GB in the end (delta: -66.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 16:25:50,384 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 16:25:50,385 INFO L168 Benchmark]: CACSL2BoogieTranslator took 137.15 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 16:25:50,385 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.37 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 16:25:50,385 INFO L168 Benchmark]: Boogie Preprocessor took 44.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 59.8 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -103.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. [2018-12-08 16:25:50,386 INFO L168 Benchmark]: RCFGBuilder took 106.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2018-12-08 16:25:50,386 INFO L168 Benchmark]: TraceAbstraction took 137.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. [2018-12-08 16:25:50,387 INFO L168 Benchmark]: Witness Printer took 2.96 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 16:25:50,388 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 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 137.15 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 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 16.37 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 59.8 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -103.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 106.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 137.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.96 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 2]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 10. Possible FailurePath: [L9] double x = 1.0; [L10] double x1 = x/1.6; VAL [x=1] [L12] COND FALSE !(x1 != x) VAL [x=1] [L18] CALL __VERIFIER_assert(x == 0) VAL [\old(cond)=0] [L2] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L2] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 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=18occurred 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 [2018-12-08 16:25:51,750 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 16:25:51,751 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 16:25:51,758 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 16:25:51,758 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 16:25:51,759 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 16:25:51,760 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 16:25:51,761 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 16:25:51,762 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 16:25:51,762 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 16:25:51,763 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 16:25:51,763 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 16:25:51,763 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 16:25:51,764 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 16:25:51,764 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 16:25:51,765 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 16:25:51,765 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 16:25:51,766 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 16:25:51,768 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 16:25:51,768 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 16:25:51,769 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 16:25:51,770 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 16:25:51,771 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 16:25:51,772 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 16:25:51,772 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 16:25:51,772 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 16:25:51,773 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 16:25:51,773 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 16:25:51,774 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 16:25:51,774 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 16:25:51,774 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 16:25:51,775 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 16:25:51,775 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 16:25:51,775 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 16:25:51,776 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 16:25:51,776 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 16:25:51,777 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-08 16:25:51,786 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 16:25:51,786 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 16:25:51,787 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 16:25:51,787 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 16:25:51,787 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 16:25:51,787 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 16:25:51,787 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 16:25:51,788 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 16:25:51,788 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 16:25:51,788 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 16:25:51,788 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 16:25:51,789 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 16:25:51,789 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 16:25:51,789 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 16:25:51,789 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 16:25:51,789 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 16:25:51,789 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 16:25:51,790 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-08 16:25:51,790 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-08 16:25:51,790 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 16:25:51,790 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 16:25:51,790 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 16:25:51,790 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 16:25:51,790 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 16:25:51,791 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 16:25:51,791 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 16:25:51,791 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 16:25:51,791 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 16:25:51,791 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 16:25:51,791 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 16:25:51,792 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 16:25:51,792 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-08 16:25:51,792 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 16:25:51,792 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-08 16:25:51,792 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-08 16:25:51,792 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_d36a8800-752a-4a5d-ae10-7aec7cb94f16/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 -> 1d363a30f559764c47bcb73d637f2d7196a1b97b [2018-12-08 16:25:51,815 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 16:25:51,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 16:25:51,824 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 16:25:51,825 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 16:25:51,825 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 16:25:51,826 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i [2018-12-08 16:25:51,862 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/data/42f8eee63/b5018ffe3da04b1a87e6fcd0fc0bacfc/FLAG3e8eeca55 [2018-12-08 16:25:52,184 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 16:25:52,184 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i [2018-12-08 16:25:52,187 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/data/42f8eee63/b5018ffe3da04b1a87e6fcd0fc0bacfc/FLAG3e8eeca55 [2018-12-08 16:25:52,195 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/data/42f8eee63/b5018ffe3da04b1a87e6fcd0fc0bacfc [2018-12-08 16:25:52,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 16:25:52,197 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 16:25:52,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 16:25:52,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 16:25:52,200 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 16:25:52,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 04:25:52" (1/1) ... [2018-12-08 16:25:52,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465578c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:52, skipping insertion in model container [2018-12-08 16:25:52,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 04:25:52" (1/1) ... [2018-12-08 16:25:52,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 16:25:52,219 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 16:25:52,308 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 16:25:52,312 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 16:25:52,321 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 16:25:52,329 INFO L195 MainTranslator]: Completed translation [2018-12-08 16:25:52,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:52 WrapperNode [2018-12-08 16:25:52,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 16:25:52,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 16:25:52,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 16:25:52,330 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 16:25:52,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:52" (1/1) ... [2018-12-08 16:25:52,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:52" (1/1) ... [2018-12-08 16:25:52,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 16:25:52,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 16:25:52,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 16:25:52,344 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 16:25:52,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:52" (1/1) ... [2018-12-08 16:25:52,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:52" (1/1) ... [2018-12-08 16:25:52,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:52" (1/1) ... [2018-12-08 16:25:52,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:52" (1/1) ... [2018-12-08 16:25:52,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:52" (1/1) ... [2018-12-08 16:25:52,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:52" (1/1) ... [2018-12-08 16:25:52,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:52" (1/1) ... [2018-12-08 16:25:52,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 16:25:52,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 16:25:52,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 16:25:52,360 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 16:25:52,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/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 [2018-12-08 16:25:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 16:25:52,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 16:25:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 16:25:52,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 16:25:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 16:25:52,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 16:25:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-08 16:25:52,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-08 16:25:53,227 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 16:25:53,227 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-08 16:25:53,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 04:25:53 BoogieIcfgContainer [2018-12-08 16:25:53,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 16:25:53,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 16:25:53,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 16:25:53,230 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 16:25:53,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 04:25:52" (1/3) ... [2018-12-08 16:25:53,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc41ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 04:25:53, skipping insertion in model container [2018-12-08 16:25:53,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:25:52" (2/3) ... [2018-12-08 16:25:53,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc41ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 04:25:53, skipping insertion in model container [2018-12-08 16:25:53,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 04:25:53" (3/3) ... [2018-12-08 16:25:53,232 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_bad_false-unreach-call.i [2018-12-08 16:25:53,237 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 16:25:53,241 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 16:25:53,250 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 16:25:53,268 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 16:25:53,268 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 16:25:53,269 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 16:25:53,269 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 16:25:53,269 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 16:25:53,269 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 16:25:53,269 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 16:25:53,269 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 16:25:53,269 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 16:25:53,280 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-08 16:25:53,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-08 16:25:53,284 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:25:53,284 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:25:53,286 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:25:53,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:25:53,290 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-12-08 16:25:53,292 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 16:25:53,292 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/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 [2018-12-08 16:25:53,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:25:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:25:53,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 16:25:55,065 WARN L180 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 11 [2018-12-08 16:25:55,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:25:55,072 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 16:25:55,082 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 16:25:55,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 16:25:55,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 16:25:55,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 16:25:55,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 16:25:55,094 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2018-12-08 16:25:56,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:25:56,552 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2018-12-08 16:25:57,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 16:25:57,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-08 16:25:57,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:25:57,172 INFO L225 Difference]: With dead ends: 31 [2018-12-08 16:25:57,172 INFO L226 Difference]: Without dead ends: 12 [2018-12-08 16:25:57,174 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 16:25:57,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-08 16:25:57,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-08 16:25:57,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-08 16:25:57,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-12-08 16:25:57,194 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-12-08 16:25:57,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:25:57,195 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-12-08 16:25:57,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 16:25:57,195 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-12-08 16:25:57,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-08 16:25:57,195 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:25:57,195 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:25:57,195 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:25:57,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:25:57,196 INFO L82 PathProgramCache]: Analyzing trace with hash -429188558, now seen corresponding path program 1 times [2018-12-08 16:25:57,196 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 16:25:57,196 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/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 [2018-12-08 16:25:57,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:25:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:25:57,626 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 16:26:01,910 WARN L180 SmtUtils]: Spent 2.86 s on a formula simplification that was a NOOP. DAG size: 12 [2018-12-08 16:26:01,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:26:01,914 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 16:26:16,252 WARN L180 SmtUtils]: Spent 2.72 s on a formula simplification that was a NOOP. DAG size: 7 [2018-12-08 16:26:16,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:26:16,273 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:26:16,273 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 16:26:16,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:26:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:26:25,083 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 16:26:25,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:26:25,087 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 16:27:00,507 WARN L180 SmtUtils]: Spent 8.03 s on a formula simplification that was a NOOP. DAG size: 11 [2018-12-08 16:27:00,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:27:00,595 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-08 16:27:00,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 7] total 11 [2018-12-08 16:27:00,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-08 16:27:00,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-08 16:27:00,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=73, Unknown=9, NotChecked=0, Total=110 [2018-12-08 16:27:00,596 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-12-08 16:27:14,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:27:14,724 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2018-12-08 16:27:14,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 16:27:14,724 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-12-08 16:27:14,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:27:14,725 INFO L225 Difference]: With dead ends: 19 [2018-12-08 16:27:14,725 INFO L226 Difference]: Without dead ends: 14 [2018-12-08 16:27:14,726 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 56.2s TimeCoverageRelationStatistics Valid=35, Invalid=87, Unknown=10, NotChecked=0, Total=132 [2018-12-08 16:27:14,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-08 16:27:14,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-08 16:27:14,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-08 16:27:14,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-12-08 16:27:14,728 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-12-08 16:27:14,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:27:14,729 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-12-08 16:27:14,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-08 16:27:14,729 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-12-08 16:27:14,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-08 16:27:14,729 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:27:14,729 INFO L402 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:27:14,730 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:27:14,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:27:14,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1003863954, now seen corresponding path program 2 times [2018-12-08 16:27:14,730 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 16:27:14,730 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-12-08 16:27:14,734 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-08 16:27:15,538 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-08 16:27:15,539 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 16:27:15,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 16:27:22,437 WARN L180 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 14 [2018-12-08 16:27:22,440 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:27:22,441 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 16:27:31,028 WARN L832 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div roundNearestTiesToEven c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) c_main_~x1~0)) (fp.eq c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) is different from false [2018-12-08 16:27:33,230 WARN L854 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div roundNearestTiesToEven c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) c_main_~x1~0)) (fp.eq c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) is different from true [2018-12-08 16:27:35,631 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from false [2018-12-08 16:27:38,031 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from true [2018-12-08 16:27:40,632 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from false [2018-12-08 16:27:43,232 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from true [2018-12-08 16:27:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2018-12-08 16:27:43,262 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:27:43,262 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 16:27:43,269 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-08 16:27:57,294 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-08 16:27:57,294 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2018-12-08 16:27:59,569 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 16:27:59,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 13 [2018-12-08 16:27:59,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-08 16:27:59,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-08 16:27:59,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=71, Unknown=6, NotChecked=54, Total=156 [2018-12-08 16:27:59,570 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-12-08 16:28:02,196 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (= c_main_~x1~0 (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0)) (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse0) .cse0))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)) (fp.eq .cse1 .cse2))) (or (fp.eq c_main_~x~0 .cse2) (not (fp.eq c_main_~x1~0 c_main_~x~0))))) is different from true [2018-12-08 16:28:04,635 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (= c_main_~x1~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0)) (let ((.cse1 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse0))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) is different from true [2018-12-08 16:28:15,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:28:15,958 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2018-12-08 16:28:15,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-08 16:28:15,958 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-12-08 16:28:15,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:28:15,958 INFO L225 Difference]: With dead ends: 24 [2018-12-08 16:28:15,959 INFO L226 Difference]: Without dead ends: 16 [2018-12-08 16:28:15,959 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 36.3s TimeCoverageRelationStatistics Valid=33, Invalid=89, Unknown=8, NotChecked=110, Total=240 [2018-12-08 16:28:15,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-12-08 16:28:15,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-12-08 16:28:15,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-08 16:28:15,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-12-08 16:28:15,962 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-12-08 16:28:15,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:28:15,962 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-12-08 16:28:15,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-08 16:28:15,962 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-12-08 16:28:15,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-08 16:28:15,962 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:28:15,963 INFO L402 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:28:15,963 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:28:15,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:28:15,963 INFO L82 PathProgramCache]: Analyzing trace with hash -517174030, now seen corresponding path program 3 times [2018-12-08 16:28:15,963 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 16:28:15,963 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-12-08 16:28:15,966 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-12-08 16:28:17,385 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-08 16:28:17,385 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 16:28:17,491 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 16:28:19,770 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (= c_main_~x1~0 (fp.div roundNearestTiesToEven c_main_~x~0 .cse0)) (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0) .cse0) .cse0) .cse0) c_main_~x~0))) is different from true [2018-12-08 16:28:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2018-12-08 16:28:19,774 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 16:28:22,078 WARN L832 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div roundNearestTiesToEven c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) c_main_~x1~0)) (fp.eq c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) is different from false [2018-12-08 16:28:26,276 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from false [2018-12-08 16:28:28,688 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from true [2018-12-08 16:28:31,312 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from false [2018-12-08 16:28:33,951 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from true [2018-12-08 16:28:36,747 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-12-08 16:28:39,542 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-12-08 16:28:42,527 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from false [2018-12-08 16:28:45,528 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from true [2018-12-08 16:28:45,544 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2018-12-08 16:28:45,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:28:45,568 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 16:28:45,576 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-08 16:29:20,870 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-08 16:29:20,870 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (8)] Forcibly destroying the process [2018-12-08 16:29:23,152 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 16:29:23,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 17 [2018-12-08 16:29:23,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-08 16:29:23,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-08 16:29:23,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=92, Unknown=10, NotChecked=138, Total=272 [2018-12-08 16:29:23,153 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 17 states. [2018-12-08 16:29:26,162 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (= c_main_~x1~0 (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0)) (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse0) .cse0) .cse0) .cse0))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)) (fp.eq .cse1 .cse2))) (or (fp.eq c_main_~x~0 .cse2) (not (fp.eq c_main_~x1~0 c_main_~x~0))))) is different from true [2018-12-08 16:29:28,995 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (= c_main_~x1~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0)) (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse0) .cse0) .cse0))) (or (fp.eq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)))))) is different from true [2018-12-08 16:29:31,641 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (= c_main_~x1~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0) .cse0)) (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse0) .cse0))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) is different from true [2018-12-08 16:29:34,073 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (= c_main_~x1~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0) .cse0) .cse0)) (let ((.cse1 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse0))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) is different from true [2018-12-08 16:29:46,878 WARN L180 SmtUtils]: Spent 7.94 s on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2018-12-08 16:29:54,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:29:54,405 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-12-08 16:29:54,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-08 16:29:54,406 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 15 [2018-12-08 16:29:54,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:29:54,406 INFO L225 Difference]: With dead ends: 26 [2018-12-08 16:29:54,406 INFO L226 Difference]: Without dead ends: 18 [2018-12-08 16:29:54,407 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 49.7s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=14, NotChecked=310, Total=506 [2018-12-08 16:29:54,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-08 16:29:54,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-12-08 16:29:54,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-08 16:29:54,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-12-08 16:29:54,410 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-12-08 16:29:54,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:29:54,410 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-12-08 16:29:54,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-08 16:29:54,410 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-12-08 16:29:54,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-08 16:29:54,411 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:29:54,411 INFO L402 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:29:54,411 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:29:54,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:29:54,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1945796014, now seen corresponding path program 4 times [2018-12-08 16:29:54,411 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 16:29:54,411 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-12-08 16:29:54,414 INFO L101 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-08 16:29:56,045 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-08 16:29:56,045 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 16:29:56,179 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 16:30:13,053 WARN L180 SmtUtils]: Spent 3.08 s on a formula simplification that was a NOOP. DAG size: 18 [2018-12-08 16:30:13,057 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:30:13,057 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 16:30:35,354 WARN L180 SmtUtils]: Spent 1.83 s on a formula simplification that was a NOOP. DAG size: 7 [2018-12-08 16:30:37,785 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-08 16:30:41,869 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-08 16:30:44,505 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-12-08 16:30:47,351 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-08 16:30:50,187 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-12-08 16:30:53,240 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-08 16:30:56,308 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-12-08 16:30:59,555 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-08 16:31:02,830 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-12-08 16:31:06,231 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-08 16:31:09,747 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-12-08 16:31:09,766 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 27 not checked. [2018-12-08 16:31:09,795 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:31:09,795 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d36a8800-752a-4a5d-ae10-7aec7cb94f16/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 16:31:09,802 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-08 16:31:33,809 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-08 16:31:33,809 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (10)] Forcibly destroying the process [2018-12-08 16:31:35,498 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 16:31:35,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2018-12-08 16:31:35,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-08 16:31:35,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-08 16:31:35,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=97, Unknown=17, NotChecked=150, Total=306 [2018-12-08 16:31:35,500 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 18 states. [2018-12-08 16:31:37,266 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-12-08 16:31:37,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 16:31:37,268 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:141) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:845) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:767) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:339) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:382) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:699) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:628) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 43 more [2018-12-08 16:31:37,270 INFO L168 Benchmark]: Toolchain (without parser) took 345073.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 942.0 MB in the beginning and 870.9 MB in the end (delta: 71.2 MB). Peak memory consumption was 172.4 MB. Max. memory is 11.5 GB. [2018-12-08 16:31:37,271 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. [2018-12-08 16:31:37,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 132.03 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 931.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 16:31:37,272 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.16 ms. Allocated memory is still 1.0 GB. Free memory is still 931.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 16:31:37,272 INFO L168 Benchmark]: Boogie Preprocessor took 15.85 ms. Allocated memory is still 1.0 GB. Free memory was 931.3 MB in the beginning and 925.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-08 16:31:37,273 INFO L168 Benchmark]: RCFGBuilder took 868.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 925.9 MB in the beginning and 1.1 GB in the end (delta: -142.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-12-08 16:31:37,273 INFO L168 Benchmark]: TraceAbstraction took 344041.82 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 870.9 MB in the end (delta: 197.7 MB). Peak memory consumption was 197.7 MB. Max. memory is 11.5 GB. [2018-12-08 16:31:37,276 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 132.03 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 931.3 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 13.16 ms. Allocated memory is still 1.0 GB. Free memory is still 931.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.85 ms. Allocated memory is still 1.0 GB. Free memory was 931.3 MB in the beginning and 925.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 868.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 925.9 MB in the beginning and 1.1 GB in the end (delta: -142.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 344041.82 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 870.9 MB in the end (delta: 197.7 MB). Peak memory consumption was 197.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...