./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 14660901cc5c4d61dda44d0e62586d716b569100 ................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 14660901cc5c4d61dda44d0e62586d716b569100 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 01:51:08,454 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 01:51:08,456 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 01:51:08,465 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 01:51:08,465 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 01:51:08,466 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 01:51:08,467 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 01:51:08,468 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 01:51:08,469 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 01:51:08,469 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 01:51:08,470 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 01:51:08,470 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 01:51:08,471 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 01:51:08,472 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 01:51:08,472 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 01:51:08,473 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 01:51:08,473 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 01:51:08,475 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 01:51:08,476 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 01:51:08,477 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 01:51:08,478 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 01:51:08,479 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 01:51:08,480 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 01:51:08,480 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 01:51:08,481 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 01:51:08,481 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 01:51:08,482 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 01:51:08,483 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 01:51:08,483 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 01:51:08,484 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 01:51:08,484 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 01:51:08,485 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 01:51:08,485 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 01:51:08,485 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 01:51:08,486 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 01:51:08,486 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 01:51:08,486 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 01:51:08,496 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 01:51:08,497 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 01:51:08,497 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 01:51:08,497 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 01:51:08,498 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 01:51:08,498 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 01:51:08,498 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 01:51:08,498 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 01:51:08,498 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 01:51:08,498 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 01:51:08,498 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 01:51:08,499 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 01:51:08,499 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 01:51:08,499 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 01:51:08,500 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 01:51:08,500 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 01:51:08,500 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 01:51:08,500 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 01:51:08,500 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 01:51:08,500 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 01:51:08,500 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 01:51:08,501 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 01:51:08,501 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 01:51:08,501 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 01:51:08,501 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 01:51:08,501 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 01:51:08,501 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 01:51:08,502 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 01:51:08,502 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 01:51:08,502 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 01:51:08,502 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 01:51:08,502 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 01:51:08,502 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 01:51:08,502 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 01:51:08,503 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_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14660901cc5c4d61dda44d0e62586d716b569100 [2018-11-10 01:51:08,529 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 01:51:08,538 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 01:51:08,540 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 01:51:08,541 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 01:51:08,542 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 01:51:08,542 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-10 01:51:08,588 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/data/2fcf8687b/d107364ff5514bf6a3f643f5a3a58bc1/FLAG4a2d8d9f0 [2018-11-10 01:51:08,905 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 01:51:08,906 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-10 01:51:08,909 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/data/2fcf8687b/d107364ff5514bf6a3f643f5a3a58bc1/FLAG4a2d8d9f0 [2018-11-10 01:51:08,918 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/data/2fcf8687b/d107364ff5514bf6a3f643f5a3a58bc1 [2018-11-10 01:51:08,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 01:51:08,921 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 01:51:08,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 01:51:08,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 01:51:08,925 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 01:51:08,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:51:08" (1/1) ... [2018-11-10 01:51:08,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ca410a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:08, skipping insertion in model container [2018-11-10 01:51:08,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:51:08" (1/1) ... [2018-11-10 01:51:08,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 01:51:08,942 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 01:51:09,062 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 01:51:09,065 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 01:51:09,075 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 01:51:09,083 INFO L193 MainTranslator]: Completed translation [2018-11-10 01:51:09,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:09 WrapperNode [2018-11-10 01:51:09,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 01:51:09,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 01:51:09,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 01:51:09,084 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 01:51:09,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:09" (1/1) ... [2018-11-10 01:51:09,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:09" (1/1) ... [2018-11-10 01:51:09,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 01:51:09,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 01:51:09,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 01:51:09,095 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 01:51:09,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:09" (1/1) ... [2018-11-10 01:51:09,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:09" (1/1) ... [2018-11-10 01:51:09,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:09" (1/1) ... [2018-11-10 01:51:09,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:09" (1/1) ... [2018-11-10 01:51:09,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:09" (1/1) ... [2018-11-10 01:51:09,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:09" (1/1) ... [2018-11-10 01:51:09,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:09" (1/1) ... [2018-11-10 01:51:09,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 01:51:09,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 01:51:09,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 01:51:09,105 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 01:51:09,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 01:51:09,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 01:51:09,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 01:51:09,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 01:51:09,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 01:51:09,173 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 01:51:09,173 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 01:51:09,258 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 01:51:09,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:51:09 BoogieIcfgContainer [2018-11-10 01:51:09,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 01:51:09,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 01:51:09,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 01:51:09,261 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 01:51:09,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 01:51:08" (1/3) ... [2018-11-10 01:51:09,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d8cef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:51:09, skipping insertion in model container [2018-11-10 01:51:09,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:09" (2/3) ... [2018-11-10 01:51:09,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d8cef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:51:09, skipping insertion in model container [2018-11-10 01:51:09,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:51:09" (3/3) ... [2018-11-10 01:51:09,263 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-10 01:51:09,268 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 01:51:09,273 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 01:51:09,282 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 01:51:09,301 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 01:51:09,301 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 01:51:09,301 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 01:51:09,301 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 01:51:09,301 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 01:51:09,302 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 01:51:09,302 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 01:51:09,302 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 01:51:09,312 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-11-10 01:51:09,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-10 01:51:09,315 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 01:51:09,316 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 01:51:09,318 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 01:51:09,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:51:09,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1301230683, now seen corresponding path program 1 times [2018-11-10 01:51:09,323 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 01:51:09,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:51:09,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 01:51:09,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 01:51:09,352 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 01:51:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:51:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:51:09,389 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 01:51:09,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 01:51:09 BoogieIcfgContainer [2018-11-10 01:51:09,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 01:51:09,405 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 01:51:09,405 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 01:51:09,405 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 01:51:09,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:51:09" (3/4) ... [2018-11-10 01:51:09,408 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 01:51:09,408 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 01:51:09,409 INFO L168 Benchmark]: Toolchain (without parser) took 488.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -112.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 01:51:09,410 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 01:51:09,410 INFO L168 Benchmark]: CACSL2BoogieTranslator took 161.63 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-10 01:51:09,410 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.28 ms. Allocated memory is still 1.0 GB. Free memory is still 948.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 01:51:09,411 INFO L168 Benchmark]: Boogie Preprocessor took 9.81 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 MB in the beginning and 945.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 01:51:09,411 INFO L168 Benchmark]: RCFGBuilder took 153.38 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -139.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2018-11-10 01:51:09,411 INFO L168 Benchmark]: TraceAbstraction took 145.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2018-11-10 01:51:09,412 INFO L168 Benchmark]: Witness Printer took 3.28 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 01:51:09,415 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 161.63 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.28 ms. Allocated memory is still 1.0 GB. Free memory is still 948.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.81 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 MB in the beginning and 945.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 153.38 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -139.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 145.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.28 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 25]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 10, overapproximation of someBinaryArithmeticDOUBLEoperation at line 8. Possible FailurePath: [L1] int __return_main; VAL [\old(__return_main)=2, __return_main=0] [L7] double main__x = 1.0; [L8] double main__x1 = main__x / 1.6; VAL [__return_main=0, main__x=1] [L10] COND FALSE !(main__x1 != main__x) [L19] int __tmp_1; [L20] __tmp_1 = main__x == 0 [L21] int __VERIFIER_assert__cond; [L22] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] [L23] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] [L25] __VERIFIER_error() VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 14 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-11-10 01:51:10,796 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 01:51:10,798 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 01:51:10,806 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 01:51:10,806 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 01:51:10,807 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 01:51:10,808 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 01:51:10,809 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 01:51:10,810 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 01:51:10,810 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 01:51:10,811 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 01:51:10,811 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 01:51:10,812 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 01:51:10,812 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 01:51:10,813 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 01:51:10,813 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 01:51:10,814 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 01:51:10,815 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 01:51:10,816 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 01:51:10,817 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 01:51:10,818 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 01:51:10,819 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 01:51:10,820 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 01:51:10,820 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 01:51:10,820 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 01:51:10,821 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 01:51:10,822 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 01:51:10,822 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 01:51:10,823 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 01:51:10,823 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 01:51:10,824 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 01:51:10,824 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 01:51:10,824 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 01:51:10,824 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 01:51:10,825 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 01:51:10,825 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 01:51:10,826 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-10 01:51:10,835 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 01:51:10,835 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 01:51:10,836 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 01:51:10,836 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 01:51:10,836 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 01:51:10,837 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 01:51:10,837 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 01:51:10,837 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 01:51:10,837 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 01:51:10,838 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 01:51:10,838 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 01:51:10,838 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 01:51:10,838 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 01:51:10,838 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 01:51:10,838 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 01:51:10,838 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-10 01:51:10,838 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-10 01:51:10,839 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 01:51:10,839 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 01:51:10,839 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 01:51:10,839 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 01:51:10,839 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 01:51:10,839 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 01:51:10,839 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 01:51:10,840 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 01:51:10,840 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 01:51:10,840 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 01:51:10,840 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 01:51:10,840 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-10 01:51:10,840 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 01:51:10,840 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-10 01:51:10,841 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-10 01:51:10,841 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_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14660901cc5c4d61dda44d0e62586d716b569100 [2018-11-10 01:51:10,869 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 01:51:10,879 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 01:51:10,881 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 01:51:10,882 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 01:51:10,883 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 01:51:10,883 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-10 01:51:10,931 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/data/61fb835d4/dc115b5fdc9a4329a85d98089cee00ad/FLAGee4868179 [2018-11-10 01:51:11,319 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 01:51:11,319 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-10 01:51:11,323 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/data/61fb835d4/dc115b5fdc9a4329a85d98089cee00ad/FLAGee4868179 [2018-11-10 01:51:11,331 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/data/61fb835d4/dc115b5fdc9a4329a85d98089cee00ad [2018-11-10 01:51:11,333 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 01:51:11,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 01:51:11,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 01:51:11,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 01:51:11,337 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 01:51:11,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:51:11" (1/1) ... [2018-11-10 01:51:11,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e5358d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:11, skipping insertion in model container [2018-11-10 01:51:11,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:51:11" (1/1) ... [2018-11-10 01:51:11,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 01:51:11,358 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 01:51:11,466 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 01:51:11,472 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 01:51:11,484 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 01:51:11,492 INFO L193 MainTranslator]: Completed translation [2018-11-10 01:51:11,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:11 WrapperNode [2018-11-10 01:51:11,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 01:51:11,493 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 01:51:11,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 01:51:11,494 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 01:51:11,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:11" (1/1) ... [2018-11-10 01:51:11,504 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:11" (1/1) ... [2018-11-10 01:51:11,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 01:51:11,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 01:51:11,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 01:51:11,508 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 01:51:11,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:11" (1/1) ... [2018-11-10 01:51:11,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:11" (1/1) ... [2018-11-10 01:51:11,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:11" (1/1) ... [2018-11-10 01:51:11,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:11" (1/1) ... [2018-11-10 01:51:11,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:11" (1/1) ... [2018-11-10 01:51:11,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:11" (1/1) ... [2018-11-10 01:51:11,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:11" (1/1) ... [2018-11-10 01:51:11,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 01:51:11,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 01:51:11,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 01:51:11,521 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 01:51:11,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 01:51:11,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 01:51:11,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 01:51:11,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 01:51:11,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 01:51:11,571 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 01:51:11,571 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 01:51:12,420 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 01:51:12,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:51:12 BoogieIcfgContainer [2018-11-10 01:51:12,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 01:51:12,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 01:51:12,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 01:51:12,422 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 01:51:12,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 01:51:11" (1/3) ... [2018-11-10 01:51:12,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46353176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:51:12, skipping insertion in model container [2018-11-10 01:51:12,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:51:11" (2/3) ... [2018-11-10 01:51:12,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46353176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:51:12, skipping insertion in model container [2018-11-10 01:51:12,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:51:12" (3/3) ... [2018-11-10 01:51:12,425 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-10 01:51:12,431 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 01:51:12,436 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 01:51:12,445 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 01:51:12,463 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 01:51:12,464 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 01:51:12,464 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 01:51:12,464 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 01:51:12,464 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 01:51:12,464 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 01:51:12,464 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 01:51:12,464 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 01:51:12,464 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 01:51:12,475 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-11-10 01:51:12,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-10 01:51:12,478 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 01:51:12,479 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 01:51:12,481 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 01:51:12,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:51:12,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1301230683, now seen corresponding path program 1 times [2018-11-10 01:51:12,487 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 01:51:12,487 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-10 01:51:12,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 01:51:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:51:12,740 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 01:51:15,694 WARN L179 SmtUtils]: Spent 2.94 s on a formula simplification that was a NOOP. DAG size: 11 [2018-11-10 01:51:15,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 01:51:15,702 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 01:51:15,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 01:51:15,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 01:51:15,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 01:51:15,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 01:51:15,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 01:51:15,724 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2018-11-10 01:51:16,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 01:51:16,862 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2018-11-10 01:51:17,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 01:51:17,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-10 01:51:17,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 01:51:17,488 INFO L225 Difference]: With dead ends: 22 [2018-11-10 01:51:17,488 INFO L226 Difference]: Without dead ends: 11 [2018-11-10 01:51:17,491 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 01:51:17,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-11-10 01:51:17,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-10 01:51:17,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-10 01:51:17,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-11-10 01:51:17,512 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-11-10 01:51:17,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 01:51:17,513 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-11-10 01:51:17,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 01:51:17,513 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-11-10 01:51:17,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 01:51:17,513 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 01:51:17,514 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 01:51:17,514 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 01:51:17,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:51:17,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1683383028, now seen corresponding path program 1 times [2018-11-10 01:51:17,515 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 01:51:17,515 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-10 01:51:17,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 01:51:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:51:17,965 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 01:51:23,321 WARN L179 SmtUtils]: Spent 3.14 s on a formula simplification that was a NOOP. DAG size: 12 [2018-11-10 01:51:23,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 01:51:23,324 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 01:51:36,564 WARN L179 SmtUtils]: Spent 2.38 s on a formula simplification that was a NOOP. DAG size: 7 [2018-11-10 01:51:36,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 01:51:36,586 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 01:51:36,587 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/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 [2018-11-10 01:51:36,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 01:51:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2018-11-10 01:51:49,961 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 01:51:49,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-11-10 01:51:49,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 01:51:49,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 01:51:49,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=15, Unknown=3, NotChecked=0, Total=30 [2018-11-10 01:51:49,962 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-11-10 01:52:03,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 01:52:03,224 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2018-11-10 01:52:03,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 01:52:03,424 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-11-10 01:52:03,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 01:52:03,424 INFO L225 Difference]: With dead ends: 16 [2018-11-10 01:52:03,424 INFO L226 Difference]: Without dead ends: 13 [2018-11-10 01:52:03,425 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=17, Invalid=22, Unknown=3, NotChecked=0, Total=42 [2018-11-10 01:52:03,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-10 01:52:03,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-10 01:52:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-10 01:52:03,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-10 01:52:03,428 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-11-10 01:52:03,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 01:52:03,428 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-10 01:52:03,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 01:52:03,428 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-10 01:52:03,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-10 01:52:03,428 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 01:52:03,429 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 01:52:03,429 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 01:52:03,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:52:03,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1473580076, now seen corresponding path program 2 times [2018-11-10 01:52:03,429 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 01:52:03,429 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/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 [2018-11-10 01:52:03,433 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-10 01:52:04,257 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 01:52:04,257 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 01:52:04,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 01:52:12,076 WARN L179 SmtUtils]: Spent 2.43 s on a formula simplification that was a NOOP. DAG size: 14 [2018-11-10 01:52:12,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 01:52:12,086 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 01:52:20,252 WARN L854 $PredicateComparison]: unable to prove that (or (fp.eq c_main_~main__x1~0 ((_ to_fp 11 53) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE c_main_~main__x1~0 ((_ to_fp 11 53) RNE (/ 8.0 5.0))) c_main_~main__x1~0))) is different from true [2018-11-10 01:52:22,652 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE c_main_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0))))) is different from false [2018-11-10 01:52:25,055 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE c_main_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0))))) is different from true [2018-11-10 01:52:27,647 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0))))) is different from false [2018-11-10 01:52:30,227 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0))))) is different from true [2018-11-10 01:52:30,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2018-11-10 01:52:30,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 01:52:30,257 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/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 [2018-11-10 01:52:30,265 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 01:52:44,485 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 01:52:44,486 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2018-11-10 01:52:46,787 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 01:52:46,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2018-11-10 01:52:46,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 01:52:46,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 01:52:46,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=42, Unknown=6, NotChecked=42, Total=110 [2018-11-10 01:52:46,789 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 11 states. [2018-11-10 01:52:49,397 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (_ bv0 32))) (.cse0 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (and (= (fp.div RNE ((_ to_fp 11 53) RNE 1.0) .cse0) c_main_~main__x1~0) (or (fp.eq c_main_~main__x~0 .cse1) (not (fp.eq c_main_~main__x1~0 c_main_~main__x~0))) (let ((.cse2 (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse0) .cse0))) (or (fp.eq .cse2 .cse1) (not (fp.eq (fp.div RNE .cse2 .cse0) .cse2)))))) is different from true [2018-11-10 01:52:51,813 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (and (= c_main_~main__x1~0 (fp.div RNE (fp.div RNE ((_ to_fp 11 53) RNE 1.0) .cse0) .cse0)) (let ((.cse1 (fp.div RNE c_main_~main__x1~0 .cse0))) (or (fp.eq .cse1 ((_ to_fp 11 53) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE .cse1 .cse0) .cse1)))))) is different from true [2018-11-10 01:52:54,022 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (and (= (fp.div RNE (fp.div RNE (fp.div RNE ((_ to_fp 11 53) RNE 1.0) .cse0) .cse0) .cse0) c_main_~main__x1~0) (or (fp.eq c_main_~main__x1~0 ((_ to_fp 11 53) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE c_main_~main__x1~0 .cse0) c_main_~main__x1~0))))) is different from true [2018-11-10 01:52:59,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 01:52:59,960 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2018-11-10 01:52:59,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 01:52:59,961 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2018-11-10 01:52:59,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 01:52:59,961 INFO L225 Difference]: With dead ends: 19 [2018-11-10 01:52:59,961 INFO L226 Difference]: Without dead ends: 15 [2018-11-10 01:52:59,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.7s TimeCoverageRelationStatistics Valid=30, Invalid=57, Unknown=9, NotChecked=114, Total=210 [2018-11-10 01:52:59,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-10 01:52:59,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-10 01:52:59,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-10 01:52:59,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-10 01:52:59,964 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-11-10 01:52:59,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 01:52:59,964 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-10 01:52:59,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 01:52:59,965 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-10 01:52:59,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-10 01:52:59,965 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 01:52:59,965 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 01:52:59,965 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 01:52:59,966 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:52:59,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1226755252, now seen corresponding path program 3 times [2018-11-10 01:52:59,966 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 01:52:59,966 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/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 [2018-11-10 01:52:59,969 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-10 01:53:01,358 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-10 01:53:01,358 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 01:53:01,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 01:53:12,864 WARN L179 SmtUtils]: Spent 1.65 s on a formula simplification that was a NOOP. DAG size: 16 [2018-11-10 01:53:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 01:53:12,868 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 01:53:20,087 WARN L854 $PredicateComparison]: unable to prove that (or (fp.eq c_main_~main__x1~0 ((_ to_fp 11 53) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE c_main_~main__x1~0 ((_ to_fp 11 53) RNE (/ 8.0 5.0))) c_main_~main__x1~0))) is different from true [2018-11-10 01:53:22,500 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE c_main_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0))))) is different from false [2018-11-10 01:53:24,913 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE c_main_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0))))) is different from true [2018-11-10 01:53:27,544 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0))))) is different from false [2018-11-10 01:53:30,174 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0))))) is different from true [2018-11-10 01:53:32,953 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32)))))) is different from false [2018-11-10 01:53:35,742 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32)))))) is different from true [2018-11-10 01:53:38,712 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32)))))) is different from false [2018-11-10 01:53:41,723 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32)))))) is different from true [2018-11-10 01:53:41,735 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2018-11-10 01:53:41,758 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 01:53:41,758 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/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 [2018-11-10 01:53:41,764 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 01:54:21,964 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-10 01:54:21,965 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (8)] Forcibly destroying the process [2018-11-10 01:54:23,889 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 01:54:23,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2018-11-10 01:54:23,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-10 01:54:23,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-10 01:54:23,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=71, Unknown=11, NotChecked=100, Total=210 [2018-11-10 01:54:23,890 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 15 states. [2018-11-10 01:54:26,908 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE (/ 8.0 5.0))) (.cse2 ((_ to_fp 11 53) RNE (_ bv0 32)))) (and (= (fp.div RNE ((_ to_fp 11 53) RNE 1.0) .cse0) c_main_~main__x1~0) (let ((.cse1 (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse0) .cse0) .cse0) .cse0))) (or (not (fp.eq (fp.div RNE .cse1 .cse0) .cse1)) (fp.eq .cse1 .cse2))) (or (fp.eq c_main_~main__x~0 .cse2) (not (fp.eq c_main_~main__x1~0 c_main_~main__x~0))))) is different from true [2018-11-10 01:54:29,738 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (and (let ((.cse0 (fp.div RNE (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32))))) (= c_main_~main__x1~0 (fp.div RNE (fp.div RNE ((_ to_fp 11 53) RNE 1.0) .cse1) .cse1)))) is different from true [2018-11-10 01:54:32,388 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (and (= (fp.div RNE (fp.div RNE (fp.div RNE ((_ to_fp 11 53) RNE 1.0) .cse0) .cse0) .cse0) c_main_~main__x1~0) (let ((.cse1 (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse0) .cse0))) (or (fp.eq .cse1 ((_ to_fp 11 53) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE .cse1 .cse0) .cse1)))))) is different from true [2018-11-10 01:54:34,817 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (and (= (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE ((_ to_fp 11 53) RNE 1.0) .cse0) .cse0) .cse0) .cse0) c_main_~main__x1~0) (let ((.cse1 (fp.div RNE c_main_~main__x1~0 .cse0))) (or (fp.eq .cse1 ((_ to_fp 11 53) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE .cse1 .cse0) .cse1)))))) is different from true [2018-11-10 01:54:42,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 01:54:42,059 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-11-10 01:54:42,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 01:54:42,059 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2018-11-10 01:54:42,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 01:54:42,059 INFO L225 Difference]: With dead ends: 21 [2018-11-10 01:54:42,060 INFO L226 Difference]: Without dead ends: 17 [2018-11-10 01:54:42,060 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.3s TimeCoverageRelationStatistics Valid=40, Invalid=91, Unknown=15, NotChecked=234, Total=380 [2018-11-10 01:54:42,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-10 01:54:42,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-10 01:54:42,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-10 01:54:42,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-11-10 01:54:42,063 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-11-10 01:54:42,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 01:54:42,063 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-11-10 01:54:42,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-10 01:54:42,064 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-10 01:54:42,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 01:54:42,064 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 01:54:42,064 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 01:54:42,064 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 01:54:42,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:54:42,064 INFO L82 PathProgramCache]: Analyzing trace with hash 2088758676, now seen corresponding path program 4 times [2018-11-10 01:54:42,065 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 01:54:42,065 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/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 [2018-11-10 01:54:42,068 INFO L101 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 01:54:43,745 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 01:54:43,745 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 01:54:43,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 01:54:46,117 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (and (= (fp.div RNE c_main_~main__x~0 .cse0) c_main_~main__x1~0) (= c_main_~main__x~0 (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE ((_ to_fp 11 53) RNE 1.0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0)))) is different from true [2018-11-10 01:54:46,120 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2018-11-10 01:54:46,120 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 01:55:09,115 WARN L179 SmtUtils]: Spent 2.79 s on a formula simplification that was a NOOP. DAG size: 7 [2018-11-10 01:55:11,536 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE c_main_~main__x1~0 .cse1))) (fp.eq (fp.div RNE .cse0 .cse1) .cse0)))) is different from false [2018-11-10 01:55:13,953 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE c_main_~main__x1~0 .cse1))) (fp.eq (fp.div RNE .cse0 .cse1) .cse0)))) is different from true [2018-11-10 01:55:16,574 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1))) (fp.eq (fp.div RNE .cse0 .cse1) .cse0)))) is different from false [2018-11-10 01:55:19,189 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1))) (fp.eq (fp.div RNE .cse0 .cse1) .cse0)))) is different from true [2018-11-10 01:55:22,019 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div RNE .cse0 .cse1) .cse0)))) is different from false [2018-11-10 01:55:24,861 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div RNE .cse0 .cse1) .cse0)))) is different from true [2018-11-10 01:55:27,898 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div RNE .cse0 .cse1) .cse0)))) is different from false [2018-11-10 01:55:30,940 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div RNE .cse0 .cse1) .cse0)))) is different from true [2018-11-10 01:55:34,179 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div RNE .cse0 .cse1) .cse0)))) is different from false [2018-11-10 01:55:37,449 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div RNE .cse0 .cse1) .cse0)))) is different from true [2018-11-10 01:55:40,877 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div RNE .cse0 .cse1) .cse0)))) is different from false [2018-11-10 01:55:44,269 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div RNE .cse0 .cse1) .cse0)))) is different from true [2018-11-10 01:55:44,289 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 27 not checked. [2018-11-10 01:55:44,318 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 01:55:44,318 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/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 [2018-11-10 01:55:44,325 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 01:56:08,332 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 01:56:08,332 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (10)] Forcibly destroying the process [2018-11-10 01:56:09,972 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 01:56:09,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2018-11-10 01:56:09,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-10 01:56:09,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-10 01:56:09,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=78, Unknown=20, NotChecked=168, Total=306 [2018-11-10 01:56:09,973 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 18 states. [2018-11-10 01:56:13,378 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (and (not (let ((.cse0 (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div RNE .cse0 .cse1) .cse0))) (= (fp.div RNE ((_ to_fp 11 53) RNE 1.0) .cse1) c_main_~main__x1~0) (not (fp.eq c_main_~main__x1~0 c_main_~main__x~0)))) is different from true [2018-11-10 01:56:16,674 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (and (not (fp.eq c_main_~main__x1~0 c_main_~main__x~0)) (not (let ((.cse0 (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div RNE .cse0 .cse1) .cse0))) (= c_main_~main__x1~0 (fp.div RNE (fp.div RNE ((_ to_fp 11 53) RNE 1.0) .cse1) .cse1)))) is different from true [2018-11-10 01:56:19,732 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (and (= (fp.div RNE (fp.div RNE (fp.div RNE ((_ to_fp 11 53) RNE 1.0) .cse0) .cse0) .cse0) c_main_~main__x1~0) (not (let ((.cse1 (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse0) .cse0) .cse0) .cse0))) (fp.eq (fp.div RNE .cse1 .cse0) .cse1))))) is different from true [2018-11-10 01:56:28,260 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (and (not (fp.eq c_main_~main__x1~0 c_main_~main__x~0)) (= c_main_~main__x1~0 (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE ((_ to_fp 11 53) RNE 1.0) .cse0) .cse0) .cse0) .cse0) .cse0)) (not (let ((.cse1 (fp.div RNE (fp.div RNE c_main_~main__x1~0 .cse0) .cse0))) (fp.eq (fp.div RNE .cse1 .cse0) .cse1))))) is different from true [2018-11-10 01:56:30,686 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE (/ 8.0 5.0)))) (and (= (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE (fp.div RNE ((_ to_fp 11 53) RNE 1.0) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) c_main_~main__x1~0) (not (let ((.cse1 (fp.div RNE c_main_~main__x1~0 .cse0))) (fp.eq (fp.div RNE .cse1 .cse0) .cse1))))) is different from true [2018-11-10 01:56:42,883 WARN L179 SmtUtils]: Spent 6.19 s on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2018-11-10 01:56:55,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 01:56:55,341 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-11-10 01:56:55,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 01:56:55,342 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 16 [2018-11-10 01:56:55,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 01:56:55,342 INFO L225 Difference]: With dead ends: 22 [2018-11-10 01:56:55,342 INFO L226 Difference]: Without dead ends: 19 [2018-11-10 01:56:55,343 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 87.7s TimeCoverageRelationStatistics Valid=54, Invalid=100, Unknown=26, NotChecked=372, Total=552 [2018-11-10 01:56:55,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-10 01:56:55,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-10 01:56:55,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-10 01:56:55,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-11-10 01:56:55,347 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-11-10 01:56:55,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 01:56:55,347 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-11-10 01:56:55,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-10 01:56:55,347 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-10 01:56:55,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-10 01:56:55,348 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 01:56:55,348 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 01:56:55,348 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 01:56:55,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:56:55,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1545361012, now seen corresponding path program 5 times [2018-11-10 01:56:55,348 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 01:56:55,349 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_66429c27-c438-4c5c-a513-4c163d6c669d/bin-2019/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-11-10 01:56:55,352 INFO L101 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2018-11-10 01:56:59,000 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-10 01:56:59,001 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 01:56:59,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 01:57:19,242 WARN L179 SmtUtils]: Spent 2.75 s on a formula simplification that was a NOOP. DAG size: 20 [2018-11-10 01:57:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 01:57:19,245 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 01:57:44,707 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-11-10 01:57:44,908 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2018-11-10 01:57:44,909 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:893) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:767) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:339) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 40 more [2018-11-10 01:57:44,912 INFO L168 Benchmark]: Toolchain (without parser) took 393578.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 948.7 MB in the beginning and 890.4 MB in the end (delta: 58.3 MB). Peak memory consumption was 179.9 MB. Max. memory is 11.5 GB. [2018-11-10 01:57:44,913 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 01:57:44,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 158.75 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 01:57:44,914 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.15 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 01:57:44,914 INFO L168 Benchmark]: Boogie Preprocessor took 12.77 ms. Allocated memory is still 1.0 GB. Free memory was 937.9 MB in the beginning and 932.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 01:57:44,915 INFO L168 Benchmark]: RCFGBuilder took 899.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -165.3 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2018-11-10 01:57:44,915 INFO L168 Benchmark]: TraceAbstraction took 392490.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 890.4 MB in the end (delta: 207.5 MB). Peak memory consumption was 207.5 MB. Max. memory is 11.5 GB. [2018-11-10 01:57:44,920 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 158.75 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 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 14.15 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.77 ms. Allocated memory is still 1.0 GB. Free memory was 937.9 MB in the beginning and 932.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 899.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -165.3 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 392490.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 890.4 MB in the end (delta: 207.5 MB). Peak memory consumption was 207.5 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...