./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/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_75b8e21e-d2ab-4be1-a278-73b50360a928/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/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_75b8e21e-d2ab-4be1-a278-73b50360a928/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/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_75b8e21e-d2ab-4be1-a278-73b50360a928/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/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 0.1.23-0cd3be1 [2018-11-28 13:10:40,354 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:10:40,355 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:10:40,362 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:10:40,362 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:10:40,363 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:10:40,364 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:10:40,365 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:10:40,366 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:10:40,366 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:10:40,367 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:10:40,367 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:10:40,368 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:10:40,369 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:10:40,369 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:10:40,370 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:10:40,370 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:10:40,372 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:10:40,373 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:10:40,374 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:10:40,375 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:10:40,375 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:10:40,377 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:10:40,377 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:10:40,377 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:10:40,378 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:10:40,378 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:10:40,379 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:10:40,379 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:10:40,380 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:10:40,380 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:10:40,381 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:10:40,381 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:10:40,381 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:10:40,382 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:10:40,382 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:10:40,382 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 13:10:40,392 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:10:40,392 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:10:40,393 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 13:10:40,393 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 13:10:40,393 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:10:40,393 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:10:40,393 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:10:40,394 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:10:40,394 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 13:10:40,394 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 13:10:40,394 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 13:10:40,394 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:10:40,394 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 13:10:40,394 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 13:10:40,394 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 13:10:40,395 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 13:10:40,395 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 13:10:40,395 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:10:40,395 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 13:10:40,395 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:10:40,395 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:10:40,395 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 13:10:40,396 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 13:10:40,396 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:10:40,396 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:10:40,396 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 13:10:40,396 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 13:10:40,396 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 13:10:40,396 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 13:10:40,396 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 13:10:40,397 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_75b8e21e-d2ab-4be1-a278-73b50360a928/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 [2018-11-28 13:10:40,421 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:10:40,429 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:10:40,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:10:40,432 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:10:40,432 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:10:40,433 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/bin-2019/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-28 13:10:40,467 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/bin-2019/uautomizer/data/9aacc5796/71668e6766ee43fb89da4aa5b822852f/FLAG38c127f42 [2018-11-28 13:10:40,859 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:10:40,859 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-28 13:10:40,864 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/bin-2019/uautomizer/data/9aacc5796/71668e6766ee43fb89da4aa5b822852f/FLAG38c127f42 [2018-11-28 13:10:40,876 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/bin-2019/uautomizer/data/9aacc5796/71668e6766ee43fb89da4aa5b822852f [2018-11-28 13:10:40,878 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:10:40,879 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 13:10:40,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:10:40,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:10:40,883 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:10:40,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:10:40" (1/1) ... [2018-11-28 13:10:40,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cad7cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:40, skipping insertion in model container [2018-11-28 13:10:40,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:10:40" (1/1) ... [2018-11-28 13:10:40,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:10:40,904 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:10:40,998 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:10:41,001 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:10:41,010 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:10:41,017 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:10:41,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:41 WrapperNode [2018-11-28 13:10:41,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:10:41,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 13:10:41,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 13:10:41,018 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 13:10:41,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:41" (1/1) ... [2018-11-28 13:10:41,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:41" (1/1) ... [2018-11-28 13:10:41,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 13:10:41,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:10:41,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:10:41,031 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:10:41,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:41" (1/1) ... [2018-11-28 13:10:41,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:41" (1/1) ... [2018-11-28 13:10:41,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:41" (1/1) ... [2018-11-28 13:10:41,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:41" (1/1) ... [2018-11-28 13:10:41,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:41" (1/1) ... [2018-11-28 13:10:41,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:41" (1/1) ... [2018-11-28 13:10:41,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:41" (1/1) ... [2018-11-28 13:10:41,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:10:41,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:10:41,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:10:41,048 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:10:41,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/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 [2018-11-28 13:10:41,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 13:10:41,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 13:10:41,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:10:41,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:10:41,121 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 13:10:41,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 13:10:41,213 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:10:41,214 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 13:10:41,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:10:41 BoogieIcfgContainer [2018-11-28 13:10:41,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:10:41,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 13:10:41,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 13:10:41,217 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 13:10:41,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 01:10:40" (1/3) ... [2018-11-28 13:10:41,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6848ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:10:41, skipping insertion in model container [2018-11-28 13:10:41,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:41" (2/3) ... [2018-11-28 13:10:41,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6848ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:10:41, skipping insertion in model container [2018-11-28 13:10:41,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:10:41" (3/3) ... [2018-11-28 13:10:41,219 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-28 13:10:41,225 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 13:10:41,229 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 13:10:41,239 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 13:10:41,257 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:10:41,258 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 13:10:41,258 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 13:10:41,258 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 13:10:41,258 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:10:41,258 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:10:41,258 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 13:10:41,258 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:10:41,258 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 13:10:41,269 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-11-28 13:10:41,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 13:10:41,274 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:10:41,275 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:10:41,276 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:10:41,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:10:41,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1301230683, now seen corresponding path program 1 times [2018-11-28 13:10:41,283 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:10:41,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:10:41,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:41,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:10:41,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:10:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:10:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:10:41,355 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 13:10:41,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 01:10:41 BoogieIcfgContainer [2018-11-28 13:10:41,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 13:10:41,369 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 13:10:41,369 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 13:10:41,369 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 13:10:41,370 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:10:41" (3/4) ... [2018-11-28 13:10:41,372 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 13:10:41,372 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 13:10:41,372 INFO L168 Benchmark]: Toolchain (without parser) took 494.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 958.7 MB in the beginning and 1.1 GB in the end (delta: -138.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:10:41,374 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:10:41,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 137.78 ms. Allocated memory is still 1.0 GB. Free memory was 958.7 MB in the beginning and 947.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-11-28 13:10:41,374 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.02 ms. Allocated memory is still 1.0 GB. Free memory is still 947.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:10:41,375 INFO L168 Benchmark]: Boogie Preprocessor took 16.08 ms. Allocated memory is still 1.0 GB. Free memory is still 947.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:10:41,375 INFO L168 Benchmark]: RCFGBuilder took 166.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -163.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:10:41,376 INFO L168 Benchmark]: TraceAbstraction took 154.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. [2018-11-28 13:10:41,376 INFO L168 Benchmark]: Witness Printer took 2.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-28 13:10:41,378 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 137.78 ms. Allocated memory is still 1.0 GB. Free memory was 958.7 MB in the beginning and 947.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.02 ms. Allocated memory is still 1.0 GB. Free memory is still 947.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.08 ms. Allocated memory is still 1.0 GB. Free memory is still 947.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 166.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -163.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 154.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. 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 0.1.23-0cd3be1 [2018-11-28 13:10:42,798 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:10:42,799 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:10:42,806 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:10:42,806 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:10:42,807 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:10:42,808 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:10:42,809 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:10:42,810 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:10:42,811 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:10:42,812 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:10:42,812 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:10:42,813 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:10:42,814 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:10:42,814 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:10:42,815 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:10:42,816 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:10:42,817 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:10:42,818 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:10:42,820 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:10:42,821 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:10:42,822 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:10:42,824 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:10:42,824 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:10:42,824 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:10:42,824 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:10:42,825 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:10:42,825 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:10:42,826 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:10:42,827 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:10:42,827 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:10:42,828 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:10:42,828 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:10:42,828 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:10:42,829 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:10:42,829 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:10:42,830 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 13:10:42,840 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:10:42,840 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:10:42,841 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 13:10:42,841 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 13:10:42,841 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:10:42,842 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:10:42,842 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:10:42,842 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:10:42,842 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 13:10:42,842 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 13:10:42,843 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:10:42,843 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 13:10:42,844 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 13:10:42,844 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 13:10:42,844 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 13:10:42,844 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 13:10:42,844 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 13:10:42,844 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 13:10:42,844 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:10:42,845 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 13:10:42,845 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:10:42,845 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:10:42,845 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 13:10:42,845 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 13:10:42,845 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:10:42,846 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:10:42,846 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 13:10:42,846 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 13:10:42,846 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 13:10:42,846 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 13:10:42,846 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 13:10:42,846 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 13:10:42,847 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_75b8e21e-d2ab-4be1-a278-73b50360a928/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 [2018-11-28 13:10:42,874 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:10:42,884 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:10:42,886 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:10:42,888 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:10:42,888 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:10:42,888 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/bin-2019/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-28 13:10:42,935 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/bin-2019/uautomizer/data/6e66bda54/35f11dd4d8b64c7481b9da06f7be90a4/FLAGa74361b2c [2018-11-28 13:10:43,256 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:10:43,256 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-28 13:10:43,259 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/bin-2019/uautomizer/data/6e66bda54/35f11dd4d8b64c7481b9da06f7be90a4/FLAGa74361b2c [2018-11-28 13:10:43,699 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/bin-2019/uautomizer/data/6e66bda54/35f11dd4d8b64c7481b9da06f7be90a4 [2018-11-28 13:10:43,701 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:10:43,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 13:10:43,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:10:43,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:10:43,706 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:10:43,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:10:43" (1/1) ... [2018-11-28 13:10:43,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f7cc5d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:43, skipping insertion in model container [2018-11-28 13:10:43,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:10:43" (1/1) ... [2018-11-28 13:10:43,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:10:43,729 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:10:43,837 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:10:43,842 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:10:43,851 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:10:43,860 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:10:43,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:43 WrapperNode [2018-11-28 13:10:43,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:10:43,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 13:10:43,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 13:10:43,861 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 13:10:43,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:43" (1/1) ... [2018-11-28 13:10:43,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:43" (1/1) ... [2018-11-28 13:10:43,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 13:10:43,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:10:43,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:10:43,877 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:10:43,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:43" (1/1) ... [2018-11-28 13:10:43,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:43" (1/1) ... [2018-11-28 13:10:43,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:43" (1/1) ... [2018-11-28 13:10:43,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:43" (1/1) ... [2018-11-28 13:10:43,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:43" (1/1) ... [2018-11-28 13:10:43,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:43" (1/1) ... [2018-11-28 13:10:43,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:43" (1/1) ... [2018-11-28 13:10:43,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:10:43,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:10:43,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:10:43,892 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:10:43,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/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 [2018-11-28 13:10:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 13:10:43,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 13:10:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:10:43,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:10:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 13:10:43,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 13:10:44,742 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:10:44,743 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 13:10:44,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:10:44 BoogieIcfgContainer [2018-11-28 13:10:44,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:10:44,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 13:10:44,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 13:10:44,746 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 13:10:44,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 01:10:43" (1/3) ... [2018-11-28 13:10:44,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483cac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:10:44, skipping insertion in model container [2018-11-28 13:10:44,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:10:43" (2/3) ... [2018-11-28 13:10:44,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483cac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:10:44, skipping insertion in model container [2018-11-28 13:10:44,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:10:44" (3/3) ... [2018-11-28 13:10:44,749 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-28 13:10:44,755 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 13:10:44,759 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 13:10:44,768 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 13:10:44,787 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:10:44,787 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 13:10:44,787 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 13:10:44,787 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 13:10:44,787 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:10:44,787 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:10:44,787 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 13:10:44,788 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:10:44,788 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 13:10:44,798 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-11-28 13:10:44,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 13:10:44,802 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:10:44,803 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:10:44,805 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:10:44,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:10:44,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1301230683, now seen corresponding path program 1 times [2018-11-28 13:10:44,812 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 13:10:44,812 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/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 [2018-11-28 13:10:44,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:10:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:10:45,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:10:47,892 WARN L180 SmtUtils]: Spent 2.82 s on a formula simplification that was a NOOP. DAG size: 11 [2018-11-28 13:10:47,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:47,899 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 13:10:47,910 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:10:47,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 13:10:47,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 13:10:47,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:10:47,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:10:47,926 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2018-11-28 13:10:50,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:10:50,280 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2018-11-28 13:10:50,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:10:50,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-28 13:10:50,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:10:50,503 INFO L225 Difference]: With dead ends: 22 [2018-11-28 13:10:50,503 INFO L226 Difference]: Without dead ends: 11 [2018-11-28 13:10:50,506 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:10:50,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-11-28 13:10:50,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-28 13:10:50,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-28 13:10:50,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-11-28 13:10:50,527 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-11-28 13:10:50,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:10:50,528 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-11-28 13:10:50,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 13:10:50,528 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-11-28 13:10:50,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 13:10:50,528 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:10:50,529 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:10:50,529 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:10:50,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:10:50,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1683383028, now seen corresponding path program 1 times [2018-11-28 13:10:50,529 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 13:10:50,530 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/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 [2018-11-28 13:10:50,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:10:50,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:10:50,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:10:54,882 WARN L180 SmtUtils]: Spent 2.45 s on a formula simplification that was a NOOP. DAG size: 12 [2018-11-28 13:10:54,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:10:54,884 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 13:10:59,295 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 [2018-11-28 13:10:59,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2018-11-28 13:10:59,838 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:10:59,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-11-28 13:10:59,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 13:10:59,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 13:10:59,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=12, Unknown=2, NotChecked=6, Total=30 [2018-11-28 13:10:59,840 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-11-28 13:11:02,046 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (not (fp.eq (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse0) c_main_~main__x1~0)) (= (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) c_main_~main__x1~0) (not (fp.eq c_main_~main__x1~0 c_main_~main__x~0)))) is different from true [2018-11-28 13:11:06,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:11:06,851 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2018-11-28 13:11:06,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:11:06,851 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-11-28 13:11:06,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:11:06,852 INFO L225 Difference]: With dead ends: 16 [2018-11-28 13:11:06,852 INFO L226 Difference]: Without dead ends: 13 [2018-11-28 13:11:06,852 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=12, Invalid=13, Unknown=3, NotChecked=14, Total=42 [2018-11-28 13:11:06,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-28 13:11:06,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-28 13:11:06,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-28 13:11:06,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-28 13:11:06,855 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-11-28 13:11:06,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:11:06,856 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-28 13:11:06,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 13:11:06,856 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-28 13:11:06,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 13:11:06,856 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:11:06,856 INFO L402 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:11:06,856 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:11:06,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:11:06,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1473580076, now seen corresponding path program 2 times [2018-11-28 13:11:06,857 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 13:11:06,857 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/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 [2018-11-28 13:11:06,863 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-28 13:11:07,674 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:11:07,674 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:11:07,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:11:12,983 WARN L180 SmtUtils]: Spent 3.40 s on a formula simplification that was a NOOP. DAG size: 14 [2018-11-28 13:11:12,991 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:12,991 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 13:11:15,257 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 [2018-11-28 13:11:18,320 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 [2018-11-28 13:11:20,705 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 [2018-11-28 13:11:23,268 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 [2018-11-28 13:11:25,849 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 [2018-11-28 13:11:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2018-11-28 13:11:25,876 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:11:25,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2018-11-28 13:11:25,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 13:11:25,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 13:11:25,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=43, Unknown=5, NotChecked=42, Total=110 [2018-11-28 13:11:25,877 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 11 states. [2018-11-28 13:11:28,475 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (= (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) c_main_~main__x1~0) (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse0) .cse0))) (or (fp.eq .cse1 .cse2) (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)))) (or (not (fp.eq c_main_~main__x1~0 c_main_~main__x~0)) (fp.eq c_main_~main__x~0 .cse2)))) is different from true [2018-11-28 13:11:30,886 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 ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) c_main_~main__x1~0))) is different from true [2018-11-28 13:11:37,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:11:37,074 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2018-11-28 13:11:37,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 13:11:37,075 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2018-11-28 13:11:37,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:11:37,075 INFO L225 Difference]: With dead ends: 19 [2018-11-28 13:11:37,075 INFO L226 Difference]: Without dead ends: 15 [2018-11-28 13:11:37,076 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=28, Invalid=57, Unknown=7, NotChecked=90, Total=182 [2018-11-28 13:11:37,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-28 13:11:37,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-28 13:11:37,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-28 13:11:37,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-28 13:11:37,079 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-11-28 13:11:37,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:11:37,079 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-28 13:11:37,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 13:11:37,079 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-28 13:11:37,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 13:11:37,080 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:11:37,080 INFO L402 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:11:37,080 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:11:37,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:11:37,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1226755252, now seen corresponding path program 3 times [2018-11-28 13:11:37,081 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 13:11:37,081 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/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 [2018-11-28 13:11:37,083 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-28 13:11:38,484 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-28 13:11:38,484 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:11:38,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:11:50,626 WARN L180 SmtUtils]: Spent 1.73 s on a formula simplification that was a NOOP. DAG size: 16 [2018-11-28 13:11:50,629 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:11:50,629 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 13:12:23,032 WARN L180 SmtUtils]: Spent 8.70 s on a formula simplification that was a NOOP. DAG size: 11 [2018-11-28 13:12:25,442 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 [2018-11-28 13:12:27,845 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 [2018-11-28 13:12:30,456 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 [2018-11-28 13:12:33,079 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 [2018-11-28 13:12:35,901 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 [2018-11-28 13:12:38,703 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 [2018-11-28 13:12:41,689 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 [2018-11-28 13:12:44,684 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 [2018-11-28 13:12:44,697 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 14 not checked. [2018-11-28 13:12:44,717 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:12:44,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2018-11-28 13:12:44,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 13:12:44,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 13:12:44,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=79, Unknown=13, NotChecked=84, Total=210 [2018-11-28 13:12:44,718 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 15 states. [2018-11-28 13:12:47,738 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (= (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) c_main_~main__x1~0) (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse0) .cse0) .cse0) .cse0))) (or (fp.eq .cse1 .cse2) (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)))) (or (not (fp.eq c_main_~main__x1~0 c_main_~main__x~0)) (fp.eq c_main_~main__x~0 .cse2)))) is different from true [2018-11-28 13:12:50,566 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 (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse2) .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 [2018-11-28 13:12:53,187 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) .cse1) c_main_~main__x1~0))) is different from true [2018-11-28 13:12:55,610 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) (= c_main_~main__x1~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) .cse1) .cse1)))) is different from true [2018-11-28 13:13:07,372 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (or (fp.eq c_main_~main__x1~0 .cse0) (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 (= c_main_~__VERIFIER_assert__cond~0 (_ bv0 32))) (or (not (fp.eq c_main_~main__x1~0 c_main_~main__x~0)) (fp.eq c_main_~main__x~0 .cse0)))) is different from true [2018-11-28 13:13:14,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:13:14,329 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-11-28 13:13:14,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 13:13:14,329 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2018-11-28 13:13:14,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:13:14,330 INFO L225 Difference]: With dead ends: 21 [2018-11-28 13:13:14,330 INFO L226 Difference]: Without dead ends: 17 [2018-11-28 13:13:14,330 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 80.0s TimeCoverageRelationStatistics Valid=44, Invalid=84, Unknown=18, NotChecked=234, Total=380 [2018-11-28 13:13:14,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-28 13:13:14,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-28 13:13:14,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-28 13:13:14,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-11-28 13:13:14,334 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-11-28 13:13:14,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:13:14,334 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-11-28 13:13:14,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 13:13:14,334 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-28 13:13:14,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 13:13:14,335 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:13:14,335 INFO L402 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:13:14,335 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:13:14,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:13:14,335 INFO L82 PathProgramCache]: Analyzing trace with hash 2088758676, now seen corresponding path program 4 times [2018-11-28 13:13:14,335 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 13:13:14,335 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/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 [2018-11-28 13:13:14,338 INFO L101 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:13:15,968 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:13:15,968 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:13:16,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:13:31,923 WARN L180 SmtUtils]: Spent 2.68 s on a formula simplification that was a NOOP. DAG size: 18 [2018-11-28 13:13:31,926 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:13:31,926 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 13:13:35,852 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 [2018-11-28 13:13:38,806 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-11-28 13:13:41,216 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 [2018-11-28 13:13:43,837 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 [2018-11-28 13:13:46,457 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 [2018-11-28 13:13:49,290 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 [2018-11-28 13:13:52,122 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 [2018-11-28 13:13:55,152 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 [2018-11-28 13:13:58,186 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 [2018-11-28 13:14:01,427 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 [2018-11-28 13:14:04,676 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 [2018-11-28 13:14:08,053 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-11-28 13:14:11,497 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-11-28 13:14:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 28 not checked. [2018-11-28 13:14:11,540 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:14:11,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2018-11-28 13:14:11,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-28 13:14:11,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-28 13:14:11,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=88, Unknown=16, NotChecked=168, Total=306 [2018-11-28 13:14:11,541 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 18 states. [2018-11-28 13:14:14,949 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (not (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))) (= (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) c_main_~main__x1~0) (not (fp.eq c_main_~main__x1~0 c_main_~main__x~0)))) is different from true [2018-11-28 13:14:18,198 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0) c_main_~main__x1~0) (not (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse0) .cse0) .cse0) .cse0) .cse0))) (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1))))) is different from true [2018-11-28 13:14:21,270 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (not (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))) (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) .cse1) c_main_~main__x1~0))) is different from true [2018-11-28 13:14:24,116 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (not (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))) (= c_main_~main__x1~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) .cse1) .cse1)))) is different from true [2018-11-28 13:14:26,767 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0) .cse0) .cse0) .cse0) c_main_~main__x1~0) (not (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse0) .cse0))) (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1))))) is different from true [2018-11-28 13:14:29,202 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (not (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))) (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) .cse1) .cse1) .cse1) .cse1) c_main_~main__x1~0))) is different from true [2018-11-28 13:14:38,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:14:38,699 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-11-28 13:14:38,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 13:14:38,700 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 16 [2018-11-28 13:14:38,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:14:38,700 INFO L225 Difference]: With dead ends: 22 [2018-11-28 13:14:38,700 INFO L226 Difference]: Without dead ends: 19 [2018-11-28 13:14:38,700 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.1s TimeCoverageRelationStatistics Valid=46, Invalid=94, Unknown=22, NotChecked=390, Total=552 [2018-11-28 13:14:38,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-28 13:14:38,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-28 13:14:38,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-28 13:14:38,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-11-28 13:14:38,704 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-11-28 13:14:38,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:14:38,704 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-11-28 13:14:38,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-28 13:14:38,704 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-28 13:14:38,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 13:14:38,705 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:14:38,705 INFO L402 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:14:38,705 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:14:38,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:14:38,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1545361012, now seen corresponding path program 5 times [2018-11-28 13:14:38,705 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 13:14:38,706 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_75b8e21e-d2ab-4be1-a278-73b50360a928/bin-2019/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-28 13:14:38,711 INFO L101 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2018-11-28 13:14:41,423 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-28 13:14:41,423 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:14:41,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:15:01,639 WARN L180 SmtUtils]: Spent 2.62 s on a formula simplification that was a NOOP. DAG size: 20 [2018-11-28 13:15:01,642 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:15:01,642 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 13:15:05,379 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 [2018-11-28 13:15:08,348 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-11-28 13:15:10,788 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 [2018-11-28 13:15:13,420 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 [2018-11-28 13:15:16,052 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-11-28 13:15:17,089 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-11-28 13:15:17,290 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2018-11-28 13:15:17,290 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:141) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$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:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 40 more [2018-11-28 13:15:17,293 INFO L168 Benchmark]: Toolchain (without parser) took 273590.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 943.4 MB in the beginning and 939.6 MB in the end (delta: 3.8 MB). Peak memory consumption was 154.2 MB. Max. memory is 11.5 GB. [2018-11-28 13:15:17,294 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:15:17,294 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.31 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:15:17,294 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.63 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:15:17,295 INFO L168 Benchmark]: Boogie Preprocessor took 14.85 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 13:15:17,295 INFO L168 Benchmark]: RCFGBuilder took 851.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -200.9 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-11-28 13:15:17,296 INFO L168 Benchmark]: TraceAbstraction took 272548.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 939.6 MB in the end (delta: 188.5 MB). Peak memory consumption was 188.5 MB. Max. memory is 11.5 GB. [2018-11-28 13:15:17,299 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 157.31 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.63 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.85 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 851.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -200.9 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 272548.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 939.6 MB in the end (delta: 188.5 MB). Peak memory consumption was 188.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...