./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.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 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/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_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/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_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/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_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/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 0.1.23-635dfa2 [2018-12-09 01:12:33,278 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 01:12:33,279 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 01:12:33,285 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 01:12:33,285 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 01:12:33,285 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 01:12:33,286 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 01:12:33,287 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 01:12:33,287 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 01:12:33,288 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 01:12:33,288 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 01:12:33,288 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 01:12:33,289 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 01:12:33,289 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 01:12:33,290 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 01:12:33,290 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 01:12:33,290 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 01:12:33,291 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 01:12:33,292 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 01:12:33,293 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 01:12:33,293 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 01:12:33,294 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 01:12:33,295 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 01:12:33,295 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 01:12:33,295 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 01:12:33,295 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 01:12:33,296 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 01:12:33,296 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 01:12:33,297 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 01:12:33,297 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 01:12:33,297 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 01:12:33,298 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 01:12:33,298 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 01:12:33,298 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 01:12:33,298 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 01:12:33,299 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 01:12:33,299 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 01:12:33,306 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 01:12:33,306 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 01:12:33,306 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 01:12:33,306 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 01:12:33,307 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 01:12:33,307 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 01:12:33,307 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 01:12:33,307 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 01:12:33,307 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 01:12:33,307 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 01:12:33,307 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 01:12:33,307 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 01:12:33,307 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 01:12:33,308 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 01:12:33,308 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 01:12:33,308 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 01:12:33,308 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 01:12:33,308 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 01:12:33,308 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 01:12:33,308 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 01:12:33,308 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 01:12:33,308 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 01:12:33,308 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 01:12:33,308 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 01:12:33,309 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 01:12:33,309 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 01:12:33,309 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 01:12:33,309 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 01:12:33,309 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 01:12:33,309 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 01:12:33,309 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 01:12:33,309 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 01:12:33,309 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 01:12:33,309 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 01:12:33,309 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 01:12:33,310 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 01:12:33,310 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_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/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 [2018-12-09 01:12:33,327 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 01:12:33,336 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 01:12:33,339 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 01:12:33,340 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 01:12:33,340 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 01:12:33,341 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-12-09 01:12:33,383 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/data/8a158cb89/a5ea04be38ef4614a89d1a0437e0f58a/FLAGb5640a1a2 [2018-12-09 01:12:33,779 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 01:12:33,779 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-12-09 01:12:33,782 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/data/8a158cb89/a5ea04be38ef4614a89d1a0437e0f58a/FLAGb5640a1a2 [2018-12-09 01:12:33,791 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/data/8a158cb89/a5ea04be38ef4614a89d1a0437e0f58a [2018-12-09 01:12:33,793 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 01:12:33,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 01:12:33,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 01:12:33,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 01:12:33,796 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 01:12:33,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:12:33" (1/1) ... [2018-12-09 01:12:33,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2acd89b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:33, skipping insertion in model container [2018-12-09 01:12:33,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:12:33" (1/1) ... [2018-12-09 01:12:33,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 01:12:33,811 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 01:12:33,895 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:12:33,898 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 01:12:33,906 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:12:33,914 INFO L195 MainTranslator]: Completed translation [2018-12-09 01:12:33,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:33 WrapperNode [2018-12-09 01:12:33,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 01:12:33,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 01:12:33,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 01:12:33,915 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 01:12:33,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:33" (1/1) ... [2018-12-09 01:12:33,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:33" (1/1) ... [2018-12-09 01:12:33,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 01:12:33,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 01:12:33,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 01:12:33,927 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 01:12:33,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:33" (1/1) ... [2018-12-09 01:12:33,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:33" (1/1) ... [2018-12-09 01:12:33,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:33" (1/1) ... [2018-12-09 01:12:33,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:33" (1/1) ... [2018-12-09 01:12:33,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:33" (1/1) ... [2018-12-09 01:12:33,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:33" (1/1) ... [2018-12-09 01:12:33,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:33" (1/1) ... [2018-12-09 01:12:33,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 01:12:33,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 01:12:33,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 01:12:33,939 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 01:12:33,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 01:12:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 01:12:33,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 01:12:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 01:12:34,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 01:12:34,000 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 01:12:34,000 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 01:12:34,070 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 01:12:34,070 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 01:12:34,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:12:34 BoogieIcfgContainer [2018-12-09 01:12:34,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 01:12:34,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 01:12:34,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 01:12:34,072 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 01:12:34,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:12:33" (1/3) ... [2018-12-09 01:12:34,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c29e65e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:12:34, skipping insertion in model container [2018-12-09 01:12:34,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:33" (2/3) ... [2018-12-09 01:12:34,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c29e65e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:12:34, skipping insertion in model container [2018-12-09 01:12:34,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:12:34" (3/3) ... [2018-12-09 01:12:34,074 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-12-09 01:12:34,079 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 01:12:34,083 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 01:12:34,091 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 01:12:34,108 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 01:12:34,108 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 01:12:34,108 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 01:12:34,108 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 01:12:34,108 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 01:12:34,108 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 01:12:34,108 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 01:12:34,108 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 01:12:34,118 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-12-09 01:12:34,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-09 01:12:34,121 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:12:34,121 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:12:34,122 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:12:34,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:12:34,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1301230683, now seen corresponding path program 1 times [2018-12-09 01:12:34,127 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:12:34,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:12:34,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:12:34,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:12:34,154 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:12:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:12:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:12:34,188 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 01:12:34,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:12:34 BoogieIcfgContainer [2018-12-09 01:12:34,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 01:12:34,202 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 01:12:34,202 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 01:12:34,202 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 01:12:34,202 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:12:34" (3/4) ... [2018-12-09 01:12:34,204 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 01:12:34,204 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 01:12:34,205 INFO L168 Benchmark]: Toolchain (without parser) took 412.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -127.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:12:34,206 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:12:34,207 INFO L168 Benchmark]: CACSL2BoogieTranslator took 120.58 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:12:34,207 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.37 ms. Allocated memory is still 1.0 GB. Free memory is still 939.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:12:34,207 INFO L168 Benchmark]: Boogie Preprocessor took 10.99 ms. Allocated memory is still 1.0 GB. Free memory is still 939.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:12:34,207 INFO L168 Benchmark]: RCFGBuilder took 131.81 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 939.0 MB in the beginning and 1.1 GB in the end (delta: -157.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. [2018-12-09 01:12:34,208 INFO L168 Benchmark]: TraceAbstraction took 130.83 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: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. [2018-12-09 01:12:34,208 INFO L168 Benchmark]: Witness Printer took 2.84 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. [2018-12-09 01:12:34,210 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 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 120.58 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.37 ms. Allocated memory is still 1.0 GB. Free memory is still 939.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.99 ms. Allocated memory is still 1.0 GB. Free memory is still 939.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 131.81 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 939.0 MB in the beginning and 1.1 GB in the end (delta: -157.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 130.83 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: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. * Witness Printer took 2.84 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, 0.0s 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 0.1.23-635dfa2 [2018-12-09 01:12:35,461 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 01:12:35,462 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 01:12:35,468 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 01:12:35,468 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 01:12:35,469 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 01:12:35,469 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 01:12:35,470 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 01:12:35,471 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 01:12:35,472 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 01:12:35,472 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 01:12:35,472 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 01:12:35,473 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 01:12:35,473 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 01:12:35,474 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 01:12:35,474 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 01:12:35,475 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 01:12:35,476 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 01:12:35,477 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 01:12:35,477 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 01:12:35,478 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 01:12:35,479 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 01:12:35,480 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 01:12:35,480 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 01:12:35,480 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 01:12:35,481 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 01:12:35,481 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 01:12:35,482 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 01:12:35,482 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 01:12:35,483 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 01:12:35,483 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 01:12:35,483 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 01:12:35,483 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 01:12:35,484 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 01:12:35,484 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 01:12:35,484 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 01:12:35,485 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 01:12:35,492 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 01:12:35,492 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 01:12:35,493 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 01:12:35,493 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 01:12:35,493 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 01:12:35,493 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 01:12:35,493 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 01:12:35,494 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 01:12:35,494 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 01:12:35,494 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 01:12:35,494 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 01:12:35,494 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 01:12:35,495 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 01:12:35,495 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 01:12:35,495 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 01:12:35,495 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 01:12:35,495 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 01:12:35,495 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 01:12:35,495 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 01:12:35,495 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 01:12:35,496 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 01:12:35,496 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 01:12:35,496 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 01:12:35,496 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 01:12:35,496 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 01:12:35,496 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 01:12:35,496 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 01:12:35,496 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 01:12:35,497 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 01:12:35,497 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 01:12:35,497 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 01:12:35,497 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 01:12:35,497 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 01:12:35,497 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 01:12:35,497 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 01:12:35,498 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_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/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 [2018-12-09 01:12:35,516 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 01:12:35,526 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 01:12:35,528 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 01:12:35,529 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 01:12:35,530 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 01:12:35,530 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-12-09 01:12:35,569 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/data/cbd12d3a6/e5a4b91b82e34832a607ae8599dc49d6/FLAG26392818d [2018-12-09 01:12:35,893 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 01:12:35,894 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-12-09 01:12:35,897 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/data/cbd12d3a6/e5a4b91b82e34832a607ae8599dc49d6/FLAG26392818d [2018-12-09 01:12:36,306 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/data/cbd12d3a6/e5a4b91b82e34832a607ae8599dc49d6 [2018-12-09 01:12:36,309 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 01:12:36,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 01:12:36,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 01:12:36,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 01:12:36,314 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 01:12:36,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:12:36" (1/1) ... [2018-12-09 01:12:36,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28f282f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:36, skipping insertion in model container [2018-12-09 01:12:36,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:12:36" (1/1) ... [2018-12-09 01:12:36,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 01:12:36,333 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 01:12:36,427 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:12:36,433 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 01:12:36,443 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:12:36,451 INFO L195 MainTranslator]: Completed translation [2018-12-09 01:12:36,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:36 WrapperNode [2018-12-09 01:12:36,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 01:12:36,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 01:12:36,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 01:12:36,452 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 01:12:36,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:36" (1/1) ... [2018-12-09 01:12:36,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:36" (1/1) ... [2018-12-09 01:12:36,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 01:12:36,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 01:12:36,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 01:12:36,466 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 01:12:36,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:36" (1/1) ... [2018-12-09 01:12:36,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:36" (1/1) ... [2018-12-09 01:12:36,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:36" (1/1) ... [2018-12-09 01:12:36,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:36" (1/1) ... [2018-12-09 01:12:36,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:36" (1/1) ... [2018-12-09 01:12:36,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:36" (1/1) ... [2018-12-09 01:12:36,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:36" (1/1) ... [2018-12-09 01:12:36,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 01:12:36,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 01:12:36,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 01:12:36,481 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 01:12:36,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 01:12:36,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 01:12:36,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 01:12:36,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 01:12:36,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 01:12:36,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 01:12:36,546 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 01:12:37,283 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 01:12:37,283 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 01:12:37,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:12:37 BoogieIcfgContainer [2018-12-09 01:12:37,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 01:12:37,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 01:12:37,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 01:12:37,286 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 01:12:37,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:12:36" (1/3) ... [2018-12-09 01:12:37,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ed8a21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:12:37, skipping insertion in model container [2018-12-09 01:12:37,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:12:36" (2/3) ... [2018-12-09 01:12:37,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ed8a21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:12:37, skipping insertion in model container [2018-12-09 01:12:37,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:12:37" (3/3) ... [2018-12-09 01:12:37,288 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-12-09 01:12:37,293 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 01:12:37,297 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 01:12:37,306 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 01:12:37,325 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 01:12:37,325 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 01:12:37,325 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 01:12:37,325 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 01:12:37,325 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 01:12:37,325 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 01:12:37,325 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 01:12:37,325 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 01:12:37,325 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 01:12:37,336 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-12-09 01:12:37,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-09 01:12:37,339 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:12:37,340 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:12:37,342 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:12:37,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:12:37,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1301230683, now seen corresponding path program 1 times [2018-12-09 01:12:37,347 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 01:12:37,347 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-09 01:12:37,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:12:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:12:37,584 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:12:40,473 WARN L180 SmtUtils]: Spent 2.87 s on a formula simplification that was a NOOP. DAG size: 11 [2018-12-09 01:12:40,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:12:40,480 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 01:12:40,490 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:12:40,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 01:12:40,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 01:12:40,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 01:12:40,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 01:12:40,505 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2018-12-09 01:12:42,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:12:42,613 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2018-12-09 01:12:42,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 01:12:42,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-09 01:12:42,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:12:42,831 INFO L225 Difference]: With dead ends: 22 [2018-12-09 01:12:42,831 INFO L226 Difference]: Without dead ends: 11 [2018-12-09 01:12:42,833 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 01:12:42,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-12-09 01:12:42,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-12-09 01:12:42,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-12-09 01:12:42,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-12-09 01:12:42,853 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-12-09 01:12:42,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:12:42,853 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-12-09 01:12:42,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 01:12:42,854 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-12-09 01:12:42,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 01:12:42,854 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:12:42,854 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:12:42,854 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:12:42,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:12:42,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1683383028, now seen corresponding path program 1 times [2018-12-09 01:12:42,855 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 01:12:42,855 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-09 01:12:42,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:12:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:12:43,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:12:46,631 WARN L180 SmtUtils]: Spent 2.17 s on a formula simplification that was a NOOP. DAG size: 12 [2018-12-09 01:12:46,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:12:46,633 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 01:12:50,813 WARN L832 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div roundNearestTiesToEven c_main_~main__x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) c_main_~main__x1~0)) is different from false [2018-12-09 01:12:51,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2018-12-09 01:12:51,371 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:12:51,372 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 01:12:51,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:13:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2018-12-09 01:13:04,703 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:13:04,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-12-09 01:13:04,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 01:13:04,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 01:13:04,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2018-12-09 01:13:04,704 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-12-09 01:13:09,613 WARN L180 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2018-12-09 01:13:13,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:13:13,236 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2018-12-09 01:13:13,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 01:13:13,237 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-12-09 01:13:13,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:13:13,237 INFO L225 Difference]: With dead ends: 16 [2018-12-09 01:13:13,237 INFO L226 Difference]: Without dead ends: 13 [2018-12-09 01:13:13,238 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=14, Invalid=19, Unknown=1, NotChecked=8, Total=42 [2018-12-09 01:13:13,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-12-09 01:13:13,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-12-09 01:13:13,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-09 01:13:13,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-12-09 01:13:13,240 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-12-09 01:13:13,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:13:13,240 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-12-09 01:13:13,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 01:13:13,240 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-12-09 01:13:13,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 01:13:13,241 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:13:13,241 INFO L402 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:13:13,241 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:13:13,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:13:13,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1473580076, now seen corresponding path program 2 times [2018-12-09 01:13:13,242 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 01:13:13,242 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-12-09 01:13:13,245 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-09 01:13:14,034 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 01:13:14,034 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:13:14,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:13:19,269 WARN L180 SmtUtils]: Spent 2.95 s on a formula simplification that was a NOOP. DAG size: 14 [2018-12-09 01:13:19,276 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:13:19,276 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 01:13:21,528 WARN L832 $PredicateComparison]: unable to prove that (or (fp.eq c_main_~main__x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven c_main_~main__x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) c_main_~main__x1~0))) is different from false [2018-12-09 01:13:25,034 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-12-09 01:13:27,407 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-12-09 01:13:29,978 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-12-09 01:13:32,534 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-12-09 01:13:32,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2018-12-09 01:13:32,563 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:13:32,563 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 01:13:32,569 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 01:13:46,655 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 01:13:46,655 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2018-12-09 01:13:48,901 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:13:48,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2018-12-09 01:13:48,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 01:13:48,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 01:13:48,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=43, Unknown=5, NotChecked=42, Total=110 [2018-12-09 01:13:48,902 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 11 states. [2018-12-09 01:13:51,498 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (= (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) c_main_~main__x1~0) (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse0) .cse0))) (or (fp.eq .cse1 .cse2) (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)))) (or (not (fp.eq c_main_~main__x1~0 c_main_~main__x~0)) (fp.eq c_main_~main__x~0 .cse2)))) is different from true [2018-12-09 01:14:00,643 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (or (fp.eq c_main_~main__x1~0 .cse0) (not (fp.eq (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) c_main_~main__x1~0))) (or (not (fp.eq c_main_~main__x1~0 c_main_~main__x~0)) (fp.eq c_main_~main__x~0 .cse0)) (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) .cse1) c_main_~main__x1~0))) is different from true [2018-12-09 01:14:05,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:14:05,423 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2018-12-09 01:14:05,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 01:14:05,423 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2018-12-09 01:14:05,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:14:05,423 INFO L225 Difference]: With dead ends: 19 [2018-12-09 01:14:05,423 INFO L226 Difference]: Without dead ends: 15 [2018-12-09 01:14:05,424 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.8s TimeCoverageRelationStatistics Valid=28, Invalid=57, Unknown=7, NotChecked=90, Total=182 [2018-12-09 01:14:05,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-09 01:14:05,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-09 01:14:05,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-09 01:14:05,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-12-09 01:14:05,427 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-12-09 01:14:05,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:14:05,427 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-12-09 01:14:05,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 01:14:05,427 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-12-09 01:14:05,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 01:14:05,427 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:14:05,427 INFO L402 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:14:05,427 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:14:05,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:14:05,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1226755252, now seen corresponding path program 3 times [2018-12-09 01:14:05,428 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 01:14:05,428 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-12-09 01:14:05,431 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-12-09 01:14:06,787 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-09 01:14:06,787 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:14:06,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:14:18,039 WARN L180 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 16 [2018-12-09 01:14:18,042 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:14:18,042 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 01:14:23,165 WARN L832 $PredicateComparison]: unable to prove that (or (fp.eq c_main_~main__x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven c_main_~main__x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) c_main_~main__x1~0))) is different from false [2018-12-09 01:14:27,613 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-12-09 01:14:30,016 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-12-09 01:14:32,627 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-12-09 01:14:35,238 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-12-09 01:14:38,022 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-12-09 01:14:40,818 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-12-09 01:14:43,814 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-12-09 01:14:46,792 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-12-09 01:14:46,806 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2018-12-09 01:14:46,829 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:14:46,829 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 01:14:46,836 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 01:15:26,511 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-09 01:15:26,511 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (8)] Forcibly destroying the process [2018-12-09 01:15:27,877 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:15:27,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2018-12-09 01:15:27,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-09 01:15:27,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-09 01:15:27,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=72, Unknown=10, NotChecked=100, Total=210 [2018-12-09 01:15:27,878 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 15 states. [2018-12-09 01:15:30,886 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (= (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) c_main_~main__x1~0) (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse0) .cse0) .cse0) .cse0))) (or (fp.eq .cse1 .cse2) (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)))) (or (not (fp.eq c_main_~main__x1~0 c_main_~main__x~0)) (fp.eq c_main_~main__x~0 .cse2)))) is different from true [2018-12-09 01:15:33,715 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) c_main_~main__x1~0))) is different from true [2018-12-09 01:15:36,339 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) .cse1) c_main_~main__x1~0))) is different from true [2018-12-09 01:15:38,753 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) (= c_main_~main__x1~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) .cse1) .cse1)))) is different from true [2018-12-09 01:15:44,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:15:44,638 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-12-09 01:15:44,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-09 01:15:44,639 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2018-12-09 01:15:44,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:15:44,639 INFO L225 Difference]: With dead ends: 21 [2018-12-09 01:15:44,639 INFO L226 Difference]: Without dead ends: 17 [2018-12-09 01:15:44,639 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=14, NotChecked=234, Total=380 [2018-12-09 01:15:44,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-12-09 01:15:44,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-12-09 01:15:44,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-09 01:15:44,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-12-09 01:15:44,643 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-12-09 01:15:44,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:15:44,643 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-12-09 01:15:44,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-09 01:15:44,643 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-12-09 01:15:44,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-09 01:15:44,643 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:15:44,643 INFO L402 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:15:44,643 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:15:44,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:15:44,644 INFO L82 PathProgramCache]: Analyzing trace with hash 2088758676, now seen corresponding path program 4 times [2018-12-09 01:15:44,644 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 01:15:44,644 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-12-09 01:15:44,647 INFO L101 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 01:15:46,258 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 01:15:46,258 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:15:46,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:16:00,451 WARN L180 SmtUtils]: Spent 2.25 s on a formula simplification that was a NOOP. DAG size: 18 [2018-12-09 01:16:00,454 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:16:00,454 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 01:16:04,368 WARN L832 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div roundNearestTiesToEven c_main_~main__x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) c_main_~main__x1~0)) is different from false [2018-12-09 01:16:07,334 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-09 01:16:09,752 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-12-09 01:16:12,374 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-09 01:16:15,005 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-12-09 01:16:17,842 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-09 01:16:20,664 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-12-09 01:16:23,714 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-09 01:16:26,776 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-12-09 01:16:29,996 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-09 01:16:33,236 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-12-09 01:16:36,632 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-09 01:16:40,069 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-12-09 01:16:40,088 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 28 not checked. [2018-12-09 01:16:40,118 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:16:40,118 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 01:16:40,125 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 01:17:04,131 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 01:17:04,132 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (10)] Forcibly destroying the process [2018-12-09 01:17:05,855 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 01:17:05,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2018-12-09 01:17:05,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-09 01:17:05,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-09 01:17:05,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=88, Unknown=16, NotChecked=168, Total=306 [2018-12-09 01:17:05,856 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 18 states. [2018-12-09 01:17:09,273 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (not (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))) (= (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 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 [2018-12-09 01:17:12,543 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0) c_main_~main__x1~0) (not (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse0) .cse0) .cse0) .cse0) .cse0))) (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1))))) is different from true [2018-12-09 01:17:15,592 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (not (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))) (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) .cse1) c_main_~main__x1~0))) is different from true [2018-12-09 01:17:18,431 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (not (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))) (= c_main_~main__x1~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) .cse1) .cse1)))) is different from true [2018-12-09 01:17:21,070 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0) .cse0) .cse0) .cse0) c_main_~main__x1~0) (not (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse0) .cse0))) (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1))))) is different from true [2018-12-09 01:17:23,496 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (not (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))) (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) .cse1) .cse1) .cse1) .cse1) c_main_~main__x1~0))) is different from true [2018-12-09 01:17:33,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:17:33,253 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-12-09 01:17:33,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 01:17:33,253 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 16 [2018-12-09 01:17:33,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:17:33,254 INFO L225 Difference]: With dead ends: 22 [2018-12-09 01:17:33,254 INFO L226 Difference]: Without dead ends: 19 [2018-12-09 01:17:33,255 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.3s TimeCoverageRelationStatistics Valid=46, Invalid=94, Unknown=22, NotChecked=390, Total=552 [2018-12-09 01:17:33,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-12-09 01:17:33,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-12-09 01:17:33,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-12-09 01:17:33,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-12-09 01:17:33,259 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-12-09 01:17:33,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:17:33,259 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-12-09 01:17:33,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-09 01:17:33,260 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-12-09 01:17:33,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-09 01:17:33,260 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:17:33,260 INFO L402 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:17:33,260 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:17:33,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:17:33,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1545361012, now seen corresponding path program 5 times [2018-12-09 01:17:33,261 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 01:17:33,261 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ba8f9-e081-4d0d-82c4-fb8d43e65427/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 [2018-12-09 01:17:33,264 INFO L101 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2018-12-09 01:17:35,941 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-12-09 01:17:35,942 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 01:17:36,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:17:56,025 WARN L180 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 20 [2018-12-09 01:17:56,028 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:17:56,028 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 01:18:00,283 WARN L832 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div roundNearestTiesToEven c_main_~main__x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) c_main_~main__x1~0)) is different from false [2018-12-09 01:18:03,274 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-09 01:18:05,701 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-12-09 01:18:08,321 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-09 01:18:10,964 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-12-09 01:18:13,817 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-09 01:18:16,665 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-12-09 01:18:19,715 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-12-09 01:18:21,006 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-12-09 01:18:21,207 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2018-12-09 01:18:21,208 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:141) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:845) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:767) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:339) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$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:232) 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:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 40 more [2018-12-09 01:18:21,213 INFO L168 Benchmark]: Toolchain (without parser) took 344903.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 943.4 MB in the beginning and 897.3 MB in the end (delta: 46.1 MB). Peak memory consumption was 178.8 MB. Max. memory is 11.5 GB. [2018-12-09 01:18:21,214 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:18:21,215 INFO L168 Benchmark]: CACSL2BoogieTranslator took 141.28 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:18:21,215 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.24 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:18:21,216 INFO L168 Benchmark]: Boogie Preprocessor took 14.46 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 01:18:21,216 INFO L168 Benchmark]: RCFGBuilder took 803.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -176.7 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-12-09 01:18:21,216 INFO L168 Benchmark]: TraceAbstraction took 343927.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 897.3 MB in the end (delta: 206.7 MB). Peak memory consumption was 206.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:18:21,218 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 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 141.28 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.24 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.46 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 803.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -176.7 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 343927.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 897.3 MB in the end (delta: 206.7 MB). Peak memory consumption was 206.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...