./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/config/AutomizerReach.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_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer --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 Automizer --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_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/config/AutomizerReach.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_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer --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 Automizer --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 0.1.23-5842f4b [2018-11-18 09:49:51,639 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:49:51,640 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:49:51,649 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:49:51,650 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:49:51,651 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:49:51,652 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:49:51,653 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:49:51,654 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:49:51,655 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:49:51,655 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:49:51,656 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:49:51,656 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:49:51,657 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:49:51,658 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:49:51,659 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:49:51,659 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:49:51,661 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:49:51,662 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:49:51,664 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:49:51,664 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:49:51,665 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:49:51,668 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:49:51,668 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:49:51,668 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:49:51,669 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:49:51,669 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:49:51,670 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:49:51,671 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:49:51,672 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:49:51,672 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:49:51,673 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:49:51,673 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:49:51,673 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:49:51,674 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:49:51,675 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:49:51,676 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 09:49:51,684 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:49:51,684 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:49:51,685 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 09:49:51,685 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 09:49:51,686 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 09:49:51,686 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 09:49:51,686 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 09:49:51,686 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:49:51,687 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 09:49:51,687 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 09:49:51,687 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 09:49:51,687 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:49:51,687 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 09:49:51,687 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 09:49:51,687 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 09:49:51,688 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 09:49:51,688 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:49:51,688 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:49:51,688 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 09:49:51,688 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:49:51,688 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:49:51,690 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 09:49:51,690 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 09:49:51,690 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 09:49:51,690 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:49:51,690 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 09:49:51,691 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 09:49:51,691 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 09:49:51,691 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 09:49:51,691 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 09:49:51,691 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_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer 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 -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14660901cc5c4d61dda44d0e62586d716b569100 [2018-11-18 09:49:51,716 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:49:51,725 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:49:51,728 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:49:51,729 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:49:51,729 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:49:51,730 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-18 09:49:51,783 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/data/1c094dfef/274e4982db104702b27a322fc81e7c83/FLAGe60634e8b [2018-11-18 09:49:52,088 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:49:52,088 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-18 09:49:52,093 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/data/1c094dfef/274e4982db104702b27a322fc81e7c83/FLAGe60634e8b [2018-11-18 09:49:52,104 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/data/1c094dfef/274e4982db104702b27a322fc81e7c83 [2018-11-18 09:49:52,106 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:49:52,107 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 09:49:52,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:49:52,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:49:52,111 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:49:52,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:49:52" (1/1) ... [2018-11-18 09:49:52,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71cd05fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:49:52, skipping insertion in model container [2018-11-18 09:49:52,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:49:52" (1/1) ... [2018-11-18 09:49:52,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:49:52,135 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:49:52,244 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:49:52,248 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:49:52,259 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:49:52,268 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:49:52,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:49:52 WrapperNode [2018-11-18 09:49:52,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:49:52,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:49:52,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:49:52,269 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:49:52,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:49:52" (1/1) ... [2018-11-18 09:49:52,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:49:52" (1/1) ... [2018-11-18 09:49:52,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:49:52" (1/1) ... [2018-11-18 09:49:52,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:49:52" (1/1) ... [2018-11-18 09:49:52,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:49:52" (1/1) ... [2018-11-18 09:49:52,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:49:52" (1/1) ... [2018-11-18 09:49:52,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:49:52" (1/1) ... [2018-11-18 09:49:52,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:49:52,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:49:52,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:49:52,287 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:49:52,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:49:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 09:49:52,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 09:49:52,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:49:52,372 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 09:49:52,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 09:49:52,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 09:49:52,372 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 09:49:52,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 09:49:52,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:49:52,506 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:49:52,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:49:52 BoogieIcfgContainer [2018-11-18 09:49:52,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:49:52,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 09:49:52,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 09:49:52,511 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 09:49:52,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:49:52" (1/3) ... [2018-11-18 09:49:52,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5483fd20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:49:52, skipping insertion in model container [2018-11-18 09:49:52,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:49:52" (2/3) ... [2018-11-18 09:49:52,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5483fd20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:49:52, skipping insertion in model container [2018-11-18 09:49:52,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:49:52" (3/3) ... [2018-11-18 09:49:52,514 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-18 09:49:52,529 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 09:49:52,534 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 09:49:52,547 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 09:49:52,570 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 09:49:52,571 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 09:49:52,571 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 09:49:52,571 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 09:49:52,571 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:49:52,571 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:49:52,571 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 09:49:52,571 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:49:52,571 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 09:49:52,584 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-11-18 09:49:52,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 09:49:52,589 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:49:52,589 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:49:52,591 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:49:52,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:49:52,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1301230683, now seen corresponding path program 1 times [2018-11-18 09:49:52,601 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:49:52,601 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:49:52,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:49:52,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:49:52,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:49:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:49:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:49:52,692 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 09:49:52,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:49:52 BoogieIcfgContainer [2018-11-18 09:49:52,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 09:49:52,712 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 09:49:52,712 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 09:49:52,712 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 09:49:52,712 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:49:52" (3/4) ... [2018-11-18 09:49:52,717 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 09:49:52,717 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 09:49:52,718 INFO L168 Benchmark]: Toolchain (without parser) took 611.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.0 MB). Free memory was 962.9 MB in the beginning and 1.1 GB in the end (delta: -182.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:49:52,719 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:49:52,720 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.95 ms. Allocated memory is still 1.0 GB. Free memory was 962.9 MB in the beginning and 952.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:49:52,721 INFO L168 Benchmark]: Boogie Preprocessor took 17.78 ms. Allocated memory is still 1.0 GB. Free memory was 952.1 MB in the beginning and 946.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 09:49:52,721 INFO L168 Benchmark]: RCFGBuilder took 219.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.0 MB). Free memory was 946.8 MB in the beginning and 1.2 GB in the end (delta: -205.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. [2018-11-18 09:49:52,727 INFO L168 Benchmark]: TraceAbstraction took 202.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-11-18 09:49:52,727 INFO L168 Benchmark]: Witness Printer took 5.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:49:52,730 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 160.95 ms. Allocated memory is still 1.0 GB. Free memory was 962.9 MB in the beginning and 952.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.78 ms. Allocated memory is still 1.0 GB. Free memory was 952.1 MB in the beginning and 946.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 219.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.0 MB). Free memory was 946.8 MB in the beginning and 1.2 GB in the end (delta: -205.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 202.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Witness Printer took 5.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 25]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 10, overapproximation of someBinaryArithmeticDOUBLEoperation at line 8. Possible FailurePath: [L1] int __return_main; VAL [\old(__return_main)=2, __return_main=0] [L7] double main__x = 1.0; [L8] double main__x1 = main__x / 1.6; VAL [__return_main=0, main__x=1] [L10] COND FALSE !(main__x1 != main__x) [L19] int __tmp_1; [L20] __tmp_1 = main__x == 0 [L21] int __VERIFIER_assert__cond; [L22] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] [L23] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] [L25] __VERIFIER_error() VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 14 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 09:49:54,287 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:49:54,289 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:49:54,305 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:49:54,305 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:49:54,306 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:49:54,307 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:49:54,309 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:49:54,310 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:49:54,311 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:49:54,311 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:49:54,312 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:49:54,312 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:49:54,313 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:49:54,314 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:49:54,314 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:49:54,315 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:49:54,317 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:49:54,318 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:49:54,319 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:49:54,320 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:49:54,321 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:49:54,323 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:49:54,323 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:49:54,324 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:49:54,324 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:49:54,325 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:49:54,326 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:49:54,326 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:49:54,328 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:49:54,328 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:49:54,328 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:49:54,328 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:49:54,329 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:49:54,329 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:49:54,330 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:49:54,330 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 09:49:54,341 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:49:54,342 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:49:54,343 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 09:49:54,343 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 09:49:54,343 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 09:49:54,343 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 09:49:54,344 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 09:49:54,344 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:49:54,344 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 09:49:54,344 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 09:49:54,344 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:49:54,344 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 09:49:54,344 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 09:49:54,345 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 09:49:54,345 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 09:49:54,345 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 09:49:54,345 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 09:49:54,345 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:49:54,345 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:49:54,345 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 09:49:54,346 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:49:54,346 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:49:54,346 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 09:49:54,346 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 09:49:54,346 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 09:49:54,348 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:49:54,348 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 09:49:54,348 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 09:49:54,349 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 09:49:54,349 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 09:49:54,349 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 09:49:54,349 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 09:49:54,349 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_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer 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 -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14660901cc5c4d61dda44d0e62586d716b569100 [2018-11-18 09:49:54,382 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:49:54,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:49:54,393 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:49:54,394 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:49:54,395 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:49:54,395 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-18 09:49:54,445 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/data/0efd12159/04bdea6748e148a1be7cb94dabf7fec8/FLAG45fb4c6ca [2018-11-18 09:49:54,763 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:49:54,764 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-18 09:49:54,767 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/data/0efd12159/04bdea6748e148a1be7cb94dabf7fec8/FLAG45fb4c6ca [2018-11-18 09:49:55,204 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/data/0efd12159/04bdea6748e148a1be7cb94dabf7fec8 [2018-11-18 09:49:55,206 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:49:55,207 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 09:49:55,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:49:55,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:49:55,214 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:49:55,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:49:55" (1/1) ... [2018-11-18 09:49:55,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c8e280a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:49:55, skipping insertion in model container [2018-11-18 09:49:55,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:49:55" (1/1) ... [2018-11-18 09:49:55,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:49:55,233 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:49:55,357 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:49:55,363 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:49:55,377 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:49:55,387 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:49:55,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:49:55 WrapperNode [2018-11-18 09:49:55,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:49:55,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:49:55,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:49:55,389 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:49:55,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:49:55" (1/1) ... [2018-11-18 09:49:55,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:49:55" (1/1) ... [2018-11-18 09:49:55,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:49:55" (1/1) ... [2018-11-18 09:49:55,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:49:55" (1/1) ... [2018-11-18 09:49:55,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:49:55" (1/1) ... [2018-11-18 09:49:55,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:49:55" (1/1) ... [2018-11-18 09:49:55,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:49:55" (1/1) ... [2018-11-18 09:49:55,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:49:55,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:49:55,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:49:55,411 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:49:55,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:49:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 09:49:55,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 09:49:55,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:49:55,460 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 09:49:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 09:49:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 09:49:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 09:49:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 09:49:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:49:56,325 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:49:56,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:49:56 BoogieIcfgContainer [2018-11-18 09:49:56,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:49:56,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 09:49:56,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 09:49:56,328 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 09:49:56,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:49:55" (1/3) ... [2018-11-18 09:49:56,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2289b25c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:49:56, skipping insertion in model container [2018-11-18 09:49:56,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:49:55" (2/3) ... [2018-11-18 09:49:56,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2289b25c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:49:56, skipping insertion in model container [2018-11-18 09:49:56,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:49:56" (3/3) ... [2018-11-18 09:49:56,331 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-18 09:49:56,338 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 09:49:56,343 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 09:49:56,355 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 09:49:56,376 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 09:49:56,376 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 09:49:56,377 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 09:49:56,377 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 09:49:56,377 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:49:56,377 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:49:56,377 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 09:49:56,377 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:49:56,377 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 09:49:56,390 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-11-18 09:49:56,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 09:49:56,394 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:49:56,395 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:49:56,396 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:49:56,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:49:56,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1301230683, now seen corresponding path program 1 times [2018-11-18 09:49:56,404 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:49:56,404 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-18 09:49:56,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:49:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:49:56,663 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:49:59,781 WARN L180 SmtUtils]: Spent 3.10 s on a formula simplification that was a NOOP. DAG size: 11 [2018-11-18 09:49:59,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:49:59,800 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:49:59,816 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:49:59,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 09:49:59,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 09:49:59,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 09:49:59,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:49:59,833 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2018-11-18 09:50:01,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:50:01,842 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2018-11-18 09:50:02,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 09:50:02,062 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-18 09:50:02,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:50:02,068 INFO L225 Difference]: With dead ends: 22 [2018-11-18 09:50:02,068 INFO L226 Difference]: Without dead ends: 11 [2018-11-18 09:50:02,070 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:50:02,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-11-18 09:50:02,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-18 09:50:02,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-18 09:50:02,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-11-18 09:50:02,097 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-11-18 09:50:02,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:50:02,097 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-11-18 09:50:02,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 09:50:02,097 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-11-18 09:50:02,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 09:50:02,098 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:50:02,098 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:50:02,098 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:50:02,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:50:02,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1683383028, now seen corresponding path program 1 times [2018-11-18 09:50:02,099 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:50:02,099 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-18 09:50:02,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:50:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:50:02,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:50:05,412 WARN L180 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 12 [2018-11-18 09:50:05,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:50:05,416 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:50:19,291 WARN L180 SmtUtils]: Spent 2.75 s on a formula simplification that was a NOOP. DAG size: 7 [2018-11-18 09:50:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:50:19,333 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:50:19,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-11-18 09:50:19,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 09:50:19,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 09:50:19,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=15, Unknown=3, NotChecked=0, Total=30 [2018-11-18 09:50:19,335 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-11-18 09:50:32,631 WARN L854 $PredicateComparison]: unable to prove that (and (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)) (not (fp.eq c_main_~main__x1~0 c_main_~main__x~0))) is different from true [2018-11-18 09:50:35,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:50:35,503 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2018-11-18 09:50:35,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 09:50:35,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-11-18 09:50:35,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:50:35,711 INFO L225 Difference]: With dead ends: 17 [2018-11-18 09:50:35,712 INFO L226 Difference]: Without dead ends: 14 [2018-11-18 09:50:35,712 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.8s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=4, NotChecked=10, Total=56 [2018-11-18 09:50:35,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-18 09:50:35,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-18 09:50:35,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-18 09:50:35,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-18 09:50:35,715 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2018-11-18 09:50:35,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:50:35,716 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-18 09:50:35,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 09:50:35,716 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-18 09:50:35,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 09:50:35,716 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:50:35,716 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:50:35,717 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:50:35,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:50:35,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1563595419, now seen corresponding path program 2 times [2018-11-18 09:50:35,717 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:50:35,717 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-18 09:50:35,734 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 09:50:36,790 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 09:50:36,790 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 09:50:36,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:50:46,587 WARN L180 SmtUtils]: Spent 2.64 s on a formula simplification that was a NOOP. DAG size: 15 [2018-11-18 09:50:46,603 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:50:46,603 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:50:53,433 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 [2018-11-18 09:50:57,979 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 [2018-11-18 09:51:00,403 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 [2018-11-18 09:51:03,010 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 [2018-11-18 09:51:05,600 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 [2018-11-18 09:51:08,390 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 [2018-11-18 09:51:11,179 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 [2018-11-18 09:51:11,192 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2018-11-18 09:51:11,213 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:51:11,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2018-11-18 09:51:11,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 09:51:11,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 09:51:11,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=54, Unknown=10, NotChecked=68, Total=156 [2018-11-18 09:51:11,214 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-11-18 09:51:14,023 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse2) .cse2) .cse2))) (or (fp.eq .cse0 .cse1) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse2) .cse0)))) (= (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse2) 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 .cse1)))) is different from true [2018-11-18 09:51:16,667 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 ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) c_main_~main__x1~0))) is different from true [2018-11-18 09:51:19,099 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)))) (= (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 [2018-11-18 09:51:24,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:51:24,893 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2018-11-18 09:51:24,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 09:51:24,894 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-11-18 09:51:24,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:51:24,894 INFO L225 Difference]: With dead ends: 20 [2018-11-18 09:51:24,894 INFO L226 Difference]: Without dead ends: 16 [2018-11-18 09:51:24,895 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.2s TimeCoverageRelationStatistics Valid=34, Invalid=71, Unknown=13, NotChecked=154, Total=272 [2018-11-18 09:51:24,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-18 09:51:24,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-18 09:51:24,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-18 09:51:24,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-18 09:51:24,900 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-11-18 09:51:24,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:51:24,900 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-18 09:51:24,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 09:51:24,900 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-18 09:51:24,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 09:51:24,900 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:51:24,901 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:51:24,901 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:51:24,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:51:24,901 INFO L82 PathProgramCache]: Analyzing trace with hash -625355333, now seen corresponding path program 3 times [2018-11-18 09:51:24,901 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:51:24,902 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-18 09:51:24,905 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-18 09:51:26,578 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 09:51:26,578 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 09:51:26,710 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:51:29,040 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (= (fp.div roundNearestTiesToEven c_main_~main__x~0 .cse0) c_main_~main__x1~0) (= (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) .cse0) .cse0) .cse0) .cse0) .cse0) .cse0) c_main_~main__x~0))) is different from true [2018-11-18 09:51:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2018-11-18 09:51:29,044 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:51:31,315 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 [2018-11-18 09:51:34,457 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 [2018-11-18 09:51:36,871 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 [2018-11-18 09:51:39,490 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 [2018-11-18 09:51:42,141 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 [2018-11-18 09:51:44,971 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 [2018-11-18 09:51:47,839 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 [2018-11-18 09:51:50,888 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 [2018-11-18 09:51:53,917 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 [2018-11-18 09:51:57,163 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 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .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 [2018-11-18 09:52:00,402 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 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .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 [2018-11-18 09:52:00,422 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 21 not checked. [2018-11-18 09:52:00,455 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 09:52:00,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2018-11-18 09:52:00,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-18 09:52:00,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-18 09:52:00,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=75, Unknown=12, NotChecked=154, Total=272 [2018-11-18 09:52:00,456 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 17 states. [2018-11-18 09:52:03,708 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse2) .cse2) .cse2) .cse2) .cse2))) (or (fp.eq .cse0 .cse1) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse2) .cse0)))) (= (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse2) 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 .cse1)))) is different from true [2018-11-18 09:52:06,778 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 (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)))) (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) c_main_~main__x1~0))) is different from true [2018-11-18 09:52:09,623 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 (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) .cse1) c_main_~main__x1~0))) is different from true [2018-11-18 09:52:12,260 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)))) (= 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 [2018-11-18 09:52:14,689 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) (let ((.cse1 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse0))) (or (fp.eq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)))))) is different from true [2018-11-18 09:52:25,749 WARN L180 SmtUtils]: Spent 7.33 s on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2018-11-18 09:52:32,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:52:32,994 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-11-18 09:52:32,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 09:52:32,994 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 15 [2018-11-18 09:52:32,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:52:32,995 INFO L225 Difference]: With dead ends: 22 [2018-11-18 09:52:32,995 INFO L226 Difference]: Without dead ends: 18 [2018-11-18 09:52:32,996 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.7s TimeCoverageRelationStatistics Valid=48, Invalid=115, Unknown=17, NotChecked=372, Total=552 [2018-11-18 09:52:32,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-18 09:52:33,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-18 09:52:33,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 09:52:33,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-18 09:52:33,001 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-11-18 09:52:33,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:52:33,001 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-18 09:52:33,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-18 09:52:33,001 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-18 09:52:33,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 09:52:33,002 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:52:33,002 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:52:33,002 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:52:33,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:52:33,002 INFO L82 PathProgramCache]: Analyzing trace with hash 326947035, now seen corresponding path program 4 times [2018-11-18 09:52:33,003 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 09:52:33,003 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2bfb5eea-0663-43f6-8827-8f608bbe708d/bin-2019/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-18 09:52:33,006 INFO L101 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 09:52:34,918 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 09:52:34,918 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 09:52:35,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:52:54,137 WARN L180 SmtUtils]: Spent 2.74 s on a formula simplification that was a NOOP. DAG size: 19 [2018-11-18 09:52:54,140 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:52:54,140 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:52:58,032 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 [2018-11-18 09:53:03,310 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 [2018-11-18 09:53:05,945 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 [2018-11-18 09:53:08,579 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 [2018-11-18 09:53:11,432 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 [2018-11-18 09:53:14,291 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 [2018-11-18 09:53:17,373 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 [2018-11-18 09:53:20,442 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 [2018-11-18 09:53:23,748 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 [2018-11-18 09:53:27,061 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-11-18 09:53:28,956 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-11-18 09:53:29,157 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2018-11-18 09:53:29,158 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:141) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:823) 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:429) 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:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 40 more [2018-11-18 09:53:29,161 INFO L168 Benchmark]: Toolchain (without parser) took 213954.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 951.9 MB in the beginning and 984.3 MB in the end (delta: -32.4 MB). Peak memory consumption was 117.5 MB. Max. memory is 11.5 GB. [2018-11-18 09:53:29,162 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:53:29,162 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.96 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:53:29,174 INFO L168 Benchmark]: Boogie Preprocessor took 22.51 ms. Allocated memory is still 1.0 GB. Free memory was 941.2 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 09:53:29,175 INFO L168 Benchmark]: RCFGBuilder took 914.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -196.5 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. [2018-11-18 09:53:29,175 INFO L168 Benchmark]: TraceAbstraction took 212834.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 984.3 MB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 11.5 GB. [2018-11-18 09:53:29,178 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 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 176.96 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.51 ms. Allocated memory is still 1.0 GB. Free memory was 941.2 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 914.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -196.5 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 212834.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 984.3 MB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 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...