./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/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 8571d6e044ba86c3b82c24f6ff451bf497f2aedf ......................................................................................................................................................................................................................................................................... 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_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/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 8571d6e044ba86c3b82c24f6ff451bf497f2aedf .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 13:27:59,586 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:27:59,588 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:27:59,596 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:27:59,596 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:27:59,596 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:27:59,597 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:27:59,598 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:27:59,599 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:27:59,600 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:27:59,601 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:27:59,601 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:27:59,601 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:27:59,602 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:27:59,603 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:27:59,603 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:27:59,604 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:27:59,605 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:27:59,606 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:27:59,607 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:27:59,608 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:27:59,609 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:27:59,610 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:27:59,610 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:27:59,610 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:27:59,611 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:27:59,612 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:27:59,612 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:27:59,613 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:27:59,614 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:27:59,614 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:27:59,614 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:27:59,615 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:27:59,615 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:27:59,615 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:27:59,616 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:27:59,616 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 13:27:59,626 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:27:59,627 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:27:59,627 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:27:59,627 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 13:27:59,628 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 13:27:59,628 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 13:27:59,628 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 13:27:59,628 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:27:59,629 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:27:59,629 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 13:27:59,629 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:27:59,629 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:27:59,629 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:27:59,629 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:27:59,629 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:27:59,630 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:27:59,630 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:27:59,630 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:27:59,630 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:27:59,630 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:27:59,630 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:27:59,631 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:27:59,631 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:27:59,631 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:27:59,631 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:27:59,631 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:27:59,631 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:27:59,631 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 13:27:59,632 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:27:59,632 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 13:27:59,632 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_840cd760-d8db-466d-993b-9b80885723b9/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 -> 8571d6e044ba86c3b82c24f6ff451bf497f2aedf [2018-11-18 13:27:59,655 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:27:59,664 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:27:59,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:27:59,668 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:27:59,668 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:27:59,669 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i [2018-11-18 13:27:59,714 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/data/0a0431495/0802a6a1b7f6488ca68fa23859fd4e2f/FLAG086b10135 [2018-11-18 13:28:00,111 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:28:00,112 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i [2018-11-18 13:28:00,115 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/data/0a0431495/0802a6a1b7f6488ca68fa23859fd4e2f/FLAG086b10135 [2018-11-18 13:28:00,124 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/data/0a0431495/0802a6a1b7f6488ca68fa23859fd4e2f [2018-11-18 13:28:00,126 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:28:00,127 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 13:28:00,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:28:00,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:28:00,130 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:28:00,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:28:00" (1/1) ... [2018-11-18 13:28:00,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88e9939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:28:00, skipping insertion in model container [2018-11-18 13:28:00,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:28:00" (1/1) ... [2018-11-18 13:28:00,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:28:00,157 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:28:00,284 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:28:00,287 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:28:00,296 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:28:00,306 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:28:00,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:28:00 WrapperNode [2018-11-18 13:28:00,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:28:00,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:28:00,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:28:00,307 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:28:00,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:28:00" (1/1) ... [2018-11-18 13:28:00,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:28:00" (1/1) ... [2018-11-18 13:28:00,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:28:00" (1/1) ... [2018-11-18 13:28:00,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:28:00" (1/1) ... [2018-11-18 13:28:00,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:28:00" (1/1) ... [2018-11-18 13:28:00,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:28:00" (1/1) ... [2018-11-18 13:28:00,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:28:00" (1/1) ... [2018-11-18 13:28:00,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:28:00,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:28:00,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:28:00,327 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:28:00,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:28:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:28:00,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:28:00,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:28:00,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 13:28:00,397 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:28:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 13:28:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 13:28:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:28:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:28:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:28:00,480 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:28:00,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:28:00 BoogieIcfgContainer [2018-11-18 13:28:00,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:28:00,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:28:00,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:28:00,484 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:28:00,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:28:00" (1/3) ... [2018-11-18 13:28:00,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5942f322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:28:00, skipping insertion in model container [2018-11-18 13:28:00,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:28:00" (2/3) ... [2018-11-18 13:28:00,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5942f322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:28:00, skipping insertion in model container [2018-11-18 13:28:00,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:28:00" (3/3) ... [2018-11-18 13:28:00,486 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_true-unreach-call.i [2018-11-18 13:28:00,492 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:28:00,496 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:28:00,504 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:28:00,522 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:28:00,522 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:28:00,522 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:28:00,522 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:28:00,523 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:28:00,523 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:28:00,523 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:28:00,523 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:28:00,523 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:28:00,533 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-18 13:28:00,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 13:28:00,537 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:28:00,538 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:28:00,540 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:28:00,544 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:28:00,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2018-11-18 13:28:00,546 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:28:00,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:28:00,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:28:00,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:28:00,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:28:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:28:00,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:28:00,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:28:00,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:28:00,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 13:28:00,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 13:28:00,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:28:00,630 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-11-18 13:28:00,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:28:00,642 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-11-18 13:28:00,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 13:28:00,643 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-18 13:28:00,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:28:00,648 INFO L225 Difference]: With dead ends: 31 [2018-11-18 13:28:00,648 INFO L226 Difference]: Without dead ends: 12 [2018-11-18 13:28:00,650 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:28:00,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-18 13:28:00,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-18 13:28:00,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-18 13:28:00,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-18 13:28:00,670 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-18 13:28:00,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:28:00,671 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-18 13:28:00,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 13:28:00,671 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-18 13:28:00,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 13:28:00,671 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:28:00,671 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:28:00,671 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:28:00,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:28:00,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1861991801, now seen corresponding path program 1 times [2018-11-18 13:28:00,672 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:28:00,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:28:00,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:28:00,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:28:00,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:28:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:28:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:28:00,697 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 13:28:00,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:28:00 BoogieIcfgContainer [2018-11-18 13:28:00,710 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:28:00,710 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:28:00,710 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:28:00,711 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:28:00,711 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:28:00" (3/4) ... [2018-11-18 13:28:00,713 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 13:28:00,713 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:28:00,714 INFO L168 Benchmark]: Toolchain (without parser) took 587.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -155.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:28:00,715 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:28:00,716 INFO L168 Benchmark]: CACSL2BoogieTranslator took 178.73 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:28:00,716 INFO L168 Benchmark]: Boogie Preprocessor took 20.01 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:28:00,717 INFO L168 Benchmark]: RCFGBuilder took 153.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -189.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-11-18 13:28:00,717 INFO L168 Benchmark]: TraceAbstraction took 229.07 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2018-11-18 13:28:00,718 INFO L168 Benchmark]: Witness Printer took 3.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:28:00,721 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 178.73 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.01 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 153.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -189.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 229.07 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 2]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 10. Possible FailurePath: [L9] double x = 1.0; [L10] double x1 = x/2.5; VAL [x=1] [L12] COND FALSE !(x1 != x) VAL [x=1] [L18] CALL __VERIFIER_assert(x == 0) VAL [\old(cond)=0] [L2] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L2] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 13:28:02,171 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:28:02,172 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:28:02,180 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:28:02,180 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:28:02,181 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:28:02,182 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:28:02,183 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:28:02,183 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:28:02,184 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:28:02,185 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:28:02,185 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:28:02,185 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:28:02,186 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:28:02,187 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:28:02,188 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:28:02,188 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:28:02,190 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:28:02,192 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:28:02,193 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:28:02,194 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:28:02,195 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:28:02,196 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:28:02,196 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:28:02,196 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:28:02,198 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:28:02,198 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:28:02,199 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:28:02,200 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:28:02,201 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:28:02,201 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:28:02,201 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:28:02,201 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:28:02,201 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:28:02,202 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:28:02,203 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:28:02,203 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 13:28:02,214 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:28:02,214 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:28:02,215 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:28:02,215 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 13:28:02,216 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 13:28:02,216 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 13:28:02,216 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 13:28:02,216 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:28:02,216 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:28:02,217 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:28:02,218 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:28:02,218 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:28:02,218 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:28:02,218 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:28:02,218 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 13:28:02,218 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 13:28:02,218 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:28:02,219 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:28:02,219 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:28:02,219 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:28:02,219 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:28:02,219 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:28:02,219 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:28:02,219 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:28:02,220 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:28:02,220 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:28:02,220 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:28:02,220 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:28:02,220 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 13:28:02,220 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:28:02,220 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 13:28:02,221 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 13:28:02,221 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_840cd760-d8db-466d-993b-9b80885723b9/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 -> 8571d6e044ba86c3b82c24f6ff451bf497f2aedf [2018-11-18 13:28:02,255 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:28:02,265 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:28:02,268 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:28:02,269 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:28:02,269 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:28:02,270 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i [2018-11-18 13:28:02,319 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/data/b1d74e9a7/956127cf8f7b4ea0880cdb214106e0f0/FLAGc11d2fcd2 [2018-11-18 13:28:02,654 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:28:02,654 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/sv-benchmarks/c/floats-esbmc-regression/Double_div_true-unreach-call.i [2018-11-18 13:28:02,658 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/data/b1d74e9a7/956127cf8f7b4ea0880cdb214106e0f0/FLAGc11d2fcd2 [2018-11-18 13:28:02,666 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/data/b1d74e9a7/956127cf8f7b4ea0880cdb214106e0f0 [2018-11-18 13:28:02,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:28:02,668 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 13:28:02,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:28:02,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:28:02,672 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:28:02,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:28:02" (1/1) ... [2018-11-18 13:28:02,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5173b53e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:28:02, skipping insertion in model container [2018-11-18 13:28:02,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:28:02" (1/1) ... [2018-11-18 13:28:02,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:28:02,693 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:28:02,824 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:28:02,830 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:28:02,842 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:28:02,852 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:28:02,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:28:02 WrapperNode [2018-11-18 13:28:02,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:28:02,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:28:02,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:28:02,853 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:28:02,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:28:02" (1/1) ... [2018-11-18 13:28:02,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:28:02" (1/1) ... [2018-11-18 13:28:02,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:28:02" (1/1) ... [2018-11-18 13:28:02,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:28:02" (1/1) ... [2018-11-18 13:28:02,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:28:02" (1/1) ... [2018-11-18 13:28:02,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:28:02" (1/1) ... [2018-11-18 13:28:02,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:28:02" (1/1) ... [2018-11-18 13:28:02,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:28:02,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:28:02,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:28:02,876 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:28:02,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:28:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:28:02,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:28:02,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:28:02,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 13:28:02,968 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:28:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 13:28:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 13:28:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:28:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:28:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:28:03,719 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:28:03,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:28:03 BoogieIcfgContainer [2018-11-18 13:28:03,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:28:03,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:28:03,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:28:03,723 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:28:03,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:28:02" (1/3) ... [2018-11-18 13:28:03,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5d50ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:28:03, skipping insertion in model container [2018-11-18 13:28:03,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:28:02" (2/3) ... [2018-11-18 13:28:03,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5d50ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:28:03, skipping insertion in model container [2018-11-18 13:28:03,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:28:03" (3/3) ... [2018-11-18 13:28:03,726 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_true-unreach-call.i [2018-11-18 13:28:03,732 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:28:03,737 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:28:03,746 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:28:03,767 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:28:03,768 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:28:03,768 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:28:03,768 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:28:03,768 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:28:03,768 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:28:03,768 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:28:03,768 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:28:03,768 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:28:03,784 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-18 13:28:03,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 13:28:03,788 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:28:03,789 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:28:03,790 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:28:03,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:28:03,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2018-11-18 13:28:03,797 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:28:03,797 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-18 13:28:03,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:28:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:28:03,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:28:03,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:28:03,989 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:28:04,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:28:04,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:28:04,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 13:28:04,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 13:28:04,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:28:04,015 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-11-18 13:28:04,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:28:04,032 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-11-18 13:28:04,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 13:28:04,033 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-18 13:28:04,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:28:04,039 INFO L225 Difference]: With dead ends: 31 [2018-11-18 13:28:04,039 INFO L226 Difference]: Without dead ends: 12 [2018-11-18 13:28:04,041 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:28:04,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-18 13:28:04,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-18 13:28:04,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-18 13:28:04,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-18 13:28:04,064 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-18 13:28:04,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:28:04,064 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-18 13:28:04,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 13:28:04,065 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-18 13:28:04,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 13:28:04,065 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:28:04,065 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:28:04,065 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:28:04,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:28:04,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1861991801, now seen corresponding path program 1 times [2018-11-18 13:28:04,066 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:28:04,066 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-18 13:28:04,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:28:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:28:04,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:28:06,942 WARN L180 SmtUtils]: Spent 2.70 s on a formula simplification that was a NOOP. DAG size: 11 [2018-11-18 13:28:06,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:28:06,949 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:28:06,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:28:06,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 13:28:06,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 13:28:06,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:28:06,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:28:06,958 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-11-18 13:28:08,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:28:08,026 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-18 13:28:08,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:28:08,609 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 13:28:08,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:28:08,610 INFO L225 Difference]: With dead ends: 19 [2018-11-18 13:28:08,610 INFO L226 Difference]: Without dead ends: 14 [2018-11-18 13:28:08,611 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:28:08,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-18 13:28:08,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-18 13:28:08,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-18 13:28:08,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-18 13:28:08,613 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-11-18 13:28:08,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:28:08,614 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-18 13:28:08,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 13:28:08,614 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-18 13:28:08,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 13:28:08,614 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:28:08,614 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:28:08,615 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:28:08,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:28:08,615 INFO L82 PathProgramCache]: Analyzing trace with hash -661808769, now seen corresponding path program 1 times [2018-11-18 13:28:08,615 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:28:08,615 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-18 13:28:08,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:28:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:28:08,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:28:12,711 WARN L180 SmtUtils]: Spent 1.90 s on a formula simplification that was a NOOP. DAG size: 12 [2018-11-18 13:28:12,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:28:12,715 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:28:17,006 WARN L832 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div roundNearestTiesToEven c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_main_~x1~0)) is different from false [2018-11-18 13:28:17,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2018-11-18 13:28:17,520 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:28:17,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-11-18 13:28:17,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 13:28:17,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 13:28:17,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=12, Unknown=2, NotChecked=6, Total=30 [2018-11-18 13:28:17,521 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2018-11-18 13:28:19,726 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (and (= c_main_~x1~0 (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0)) (not (fp.eq (fp.div roundNearestTiesToEven c_main_~x1~0 .cse0) c_main_~x1~0)) (not (fp.eq c_main_~x1~0 c_main_~x~0)))) is different from true [2018-11-18 13:28:23,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:28:23,028 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2018-11-18 13:28:23,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 13:28:23,028 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-11-18 13:28:23,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:28:23,029 INFO L225 Difference]: With dead ends: 23 [2018-11-18 13:28:23,029 INFO L226 Difference]: Without dead ends: 18 [2018-11-18 13:28:23,030 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=12, Invalid=13, Unknown=3, NotChecked=14, Total=42 [2018-11-18 13:28:23,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-18 13:28:23,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-18 13:28:23,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 13:28:23,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-18 13:28:23,032 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 13 [2018-11-18 13:28:23,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:28:23,033 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-18 13:28:23,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 13:28:23,033 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-18 13:28:23,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 13:28:23,033 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:28:23,034 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:28:23,034 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:28:23,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:28:23,034 INFO L82 PathProgramCache]: Analyzing trace with hash 2058417419, now seen corresponding path program 2 times [2018-11-18 13:28:23,035 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:28:23,035 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-18 13:28:23,039 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 13:28:23,594 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 13:28:23,594 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:28:23,639 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:28:31,629 WARN L180 SmtUtils]: Spent 2.38 s on a formula simplification that was a NOOP. DAG size: 14 [2018-11-18 13:28:31,633 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:28:31,633 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:28:41,698 WARN L854 $PredicateComparison]: unable to prove that (or (fp.eq c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_main_~x1~0))) is different from true [2018-11-18 13:28:44,063 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-11-18 13:28:46,421 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-11-18 13:28:49,027 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from false [2018-11-18 13:28:51,580 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from true [2018-11-18 13:28:51,592 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 12 not checked. [2018-11-18 13:28:51,613 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:28:51,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 13 [2018-11-18 13:28:51,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 13:28:51,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 13:28:51,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=70, Unknown=7, NotChecked=54, Total=156 [2018-11-18 13:28:51,614 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 13 states. [2018-11-18 13:28:54,203 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 .cse2))) (= c_main_~x1~0 (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1)) (or (fp.eq c_main_~x~0 .cse2) (not (fp.eq c_main_~x1~0 c_main_~x~0))))) is different from true [2018-11-18 13:28:56,650 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (and (= c_main_~x1~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0)) (let ((.cse1 (fp.div roundNearestTiesToEven c_main_~x1~0 .cse0))) (or (fp.eq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)))))) is different from true [2018-11-18 13:29:07,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:29:07,733 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-11-18 13:29:07,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 13:29:07,733 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17 [2018-11-18 13:29:07,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:29:07,734 INFO L225 Difference]: With dead ends: 30 [2018-11-18 13:29:07,734 INFO L226 Difference]: Without dead ends: 22 [2018-11-18 13:29:07,735 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.8s TimeCoverageRelationStatistics Valid=33, Invalid=88, Unknown=9, NotChecked=110, Total=240 [2018-11-18 13:29:07,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-18 13:29:07,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-18 13:29:07,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-18 13:29:07,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-11-18 13:29:07,738 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 17 [2018-11-18 13:29:07,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:29:07,739 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-11-18 13:29:07,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 13:29:07,739 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-18 13:29:07,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 13:29:07,739 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:29:07,739 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:29:07,739 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:29:07,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:29:07,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1566812823, now seen corresponding path program 3 times [2018-11-18 13:29:07,740 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:29:07,740 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-18 13:29:07,747 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-18 13:29:08,540 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 13:29:08,541 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:29:08,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:29:12,720 WARN L180 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 7 [2018-11-18 13:29:15,195 WARN L832 $PredicateComparison]: unable to prove that (and (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (and (= (fp.div roundNearestTiesToEven v_main_~x~0_13 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_main_~x~0) (not (fp.eq c_main_~x~0 v_main_~x~0_13)))) (= c_main_~x1~0 (fp.div roundNearestTiesToEven c_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))))) is different from false [2018-11-18 13:29:19,500 WARN L832 $PredicateComparison]: unable to prove that (and (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (and (= (fp.div roundNearestTiesToEven v_main_~x~0_13 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_main_~x~0) (not (fp.eq c_main_~x~0 v_main_~x~0_13)))) (fp.eq (fp.div roundNearestTiesToEven c_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_main_~x~0)) is different from false [2018-11-18 13:29:21,740 WARN L854 $PredicateComparison]: unable to prove that (and (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (and (= (fp.div roundNearestTiesToEven v_main_~x~0_13 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_main_~x~0) (not (fp.eq c_main_~x~0 v_main_~x~0_13)))) (fp.eq (fp.div roundNearestTiesToEven c_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_main_~x~0)) is different from true [2018-11-18 13:29:34,169 WARN L832 $PredicateComparison]: unable to prove that (or (and (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_13 .cse1))) (and (not (fp.eq .cse0 v_main_~x~0_13)) (not (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (and (exists ((v_prenex_2 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse2 (fp.div roundNearestTiesToEven v_prenex_2 .cse3))) (and (fp.eq (fp.div roundNearestTiesToEven .cse2 .cse3) .cse2) (not (fp.eq .cse2 v_prenex_2)) (fp.eq .cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) (= (bvadd |c___VERIFIER_assert_#in~cond| (_ bv4294967295 32)) (_ bv0 32)))) is different from false [2018-11-18 13:29:46,588 WARN L832 $PredicateComparison]: unable to prove that (or (and (= (_ bv0 32) c___VERIFIER_assert_~cond) (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_13 .cse1))) (and (not (fp.eq .cse0 v_main_~x~0_13)) (not (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))))) (and (exists ((v_prenex_2 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse2 (fp.div roundNearestTiesToEven v_prenex_2 .cse3))) (and (fp.eq (fp.div roundNearestTiesToEven .cse2 .cse3) .cse2) (not (fp.eq .cse2 v_prenex_2)) (fp.eq .cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) (= (bvadd c___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)))) is different from false [2018-11-18 13:29:53,991 WARN L832 $PredicateComparison]: unable to prove that (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_13 .cse1))) (and (not (fp.eq .cse0 v_main_~x~0_13)) (not (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-11-18 13:29:56,409 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_13 .cse1))) (and (not (fp.eq .cse0 v_main_~x~0_13)) (not (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-11-18 13:29:56,412 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 2 not checked. [2018-11-18 13:29:56,413 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:30:10,726 WARN L854 $PredicateComparison]: unable to prove that (or (fp.eq c_main_~x1~0 c_main_~x~0) (fp.eq c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven c_main_~x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) c_main_~x1~0))) is different from true [2018-11-18 13:30:18,046 WARN L832 $PredicateComparison]: unable to prove that (forall ((v_main_~x~0_15 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_15 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 v_main_~x~0_15))))) is different from false [2018-11-18 13:30:20,443 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_main_~x~0_15 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_main_~x~0_15 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)) (fp.eq .cse0 v_main_~x~0_15))))) is different from true [2018-11-18 13:31:09,128 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:31:09,128 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:31:09,136 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 13:32:05,913 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-18 13:32:05,914 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2018-11-18 13:32:07,305 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-18 13:32:07,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-11-18 13:32:07,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 13:32:07,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 13:32:07,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=32, Unknown=12, NotChecked=112, Total=182 [2018-11-18 13:32:07,306 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 8 states. [2018-11-18 13:32:09,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:32:09,842 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-11-18 13:32:10,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 13:32:10,252 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2018-11-18 13:32:10,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:32:10,252 INFO L225 Difference]: With dead ends: 22 [2018-11-18 13:32:10,253 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 13:32:10,253 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.6s TimeCoverageRelationStatistics Valid=26, Invalid=32, Unknown=12, NotChecked=112, Total=182 [2018-11-18 13:32:10,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 13:32:10,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 13:32:10,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 13:32:10,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 13:32:10,254 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-11-18 13:32:10,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:32:10,254 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 13:32:10,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 13:32:10,255 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 13:32:10,255 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 13:32:10,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 13:32:32,020 WARN L180 SmtUtils]: Spent 21.71 s on a formula simplification that was a NOOP. DAG size: 18 [2018-11-18 13:32:33,735 WARN L180 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 44 DAG size of output: 1 [2018-11-18 13:33:51,762 WARN L180 SmtUtils]: Spent 1.30 m on a formula simplification. DAG size of input: 35 DAG size of output: 20 [2018-11-18 13:33:51,764 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 13:33:51,764 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 13:33:51,764 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 13:33:51,764 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 13:33:51,764 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 13:33:51,764 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 13:33:51,764 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 7 20) the Hoare annotation is: true [2018-11-18 13:33:51,764 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 7 20) no Hoare annotation was computed. [2018-11-18 13:33:51,764 INFO L425 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-11-18 13:33:51,764 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 7 20) no Hoare annotation was computed. [2018-11-18 13:33:51,765 INFO L425 ceAbstractionStarter]: For program point L12-1(lines 12 16) no Hoare annotation was computed. [2018-11-18 13:33:51,765 INFO L421 ceAbstractionStarter]: At program point L12-3(lines 12 16) the Hoare annotation is: (let ((.cse0 (= main_~x1~0 (fp.div roundNearestTiesToEven main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))))) (or (and (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (and (= (fp.div roundNearestTiesToEven v_main_~x~0_13 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) main_~x~0) (not (fp.eq main_~x~0 v_main_~x~0_13)))) .cse0) (and (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) main_~x~0) .cse0))) [2018-11-18 13:33:51,765 INFO L421 ceAbstractionStarter]: At program point L12-4(lines 12 16) the Hoare annotation is: (or (and (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (and (= (fp.div roundNearestTiesToEven v_main_~x~0_13 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) main_~x~0) (not (fp.eq main_~x~0 v_main_~x~0_13)))) (fp.eq (fp.div roundNearestTiesToEven main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0))) main_~x~0)) (fp.eq main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) [2018-11-18 13:33:51,765 INFO L425 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2018-11-18 13:33:51,765 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2018-11-18 13:33:51,765 INFO L425 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2018-11-18 13:33:51,765 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2018-11-18 13:33:51,765 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2018-11-18 13:33:51,765 INFO L425 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2018-11-18 13:33:51,772 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,773 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2018-11-18 13:33:51,773 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,774 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2018-11-18 13:33:51,774 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,774 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,774 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,774 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,774 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,777 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,778 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2018-11-18 13:33:51,778 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,778 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2018-11-18 13:33:51,778 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,778 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,778 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,778 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,779 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:33:51 BoogieIcfgContainer [2018-11-18 13:33:51,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:33:51,781 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:33:51,781 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:33:51,781 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:33:51,781 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:28:03" (3/4) ... [2018-11-18 13:33:51,784 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 13:33:51,788 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 13:33:51,789 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 13:33:51,789 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-18 13:33:51,792 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-18 13:33:51,792 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-18 13:33:51,792 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 13:33:51,810 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists v_main_~x~0_13 : C_DOUBLE :: ~fp.div~DOUBLE(~roundNearestTiesToEven, v_main_~x~0_13, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2)) == x && !~fp.eq~DOUBLE(x, v_main_~x~0_13)) && x1 == ~fp.div~DOUBLE(~roundNearestTiesToEven, x, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2))) || (~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0) == x && x1 == ~fp.div~DOUBLE(~roundNearestTiesToEven, x, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2))) [2018-11-18 13:33:51,817 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_840cd760-d8db-466d-993b-9b80885723b9/bin-2019/uautomizer/witness.graphml [2018-11-18 13:33:51,817 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:33:51,818 INFO L168 Benchmark]: Toolchain (without parser) took 349150.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 951.8 MB in the beginning and 985.8 MB in the end (delta: -34.0 MB). Peak memory consumption was 117.0 MB. Max. memory is 11.5 GB. [2018-11-18 13:33:51,818 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:33:51,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.54 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:33:51,819 INFO L168 Benchmark]: Boogie Preprocessor took 22.59 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 13:33:51,819 INFO L168 Benchmark]: RCFGBuilder took 844.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -197.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-11-18 13:33:51,820 INFO L168 Benchmark]: TraceAbstraction took 348059.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 992.5 MB in the end (delta: 140.7 MB). Peak memory consumption was 140.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:33:51,820 INFO L168 Benchmark]: Witness Printer took 36.80 ms. Allocated memory is still 1.2 GB. Free memory was 992.5 MB in the beginning and 985.8 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-18 13:33:51,822 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 183.54 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.59 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 844.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -197.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 348059.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 992.5 MB in the end (delta: 140.7 MB). Peak memory consumption was 140.7 MB. Max. memory is 11.5 GB. * Witness Printer took 36.80 ms. Allocated memory is still 1.2 GB. Free memory was 992.5 MB in the beginning and 985.8 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant [2018-11-18 13:33:51,827 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,827 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2018-11-18 13:33:51,827 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,827 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2018-11-18 13:33:51,827 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,828 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,828 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,828 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,828 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,829 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,829 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2018-11-18 13:33:51,829 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,829 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2018-11-18 13:33:51,829 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,829 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,830 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,830 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-18 13:33:51,830 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((\exists v_main_~x~0_13 : C_DOUBLE :: ~fp.div~DOUBLE(~roundNearestTiesToEven, v_main_~x~0_13, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2)) == x && !~fp.eq~DOUBLE(x, v_main_~x~0_13)) && x1 == ~fp.div~DOUBLE(~roundNearestTiesToEven, x, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2))) || (~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0) == x && x1 == ~fp.div~DOUBLE(~roundNearestTiesToEven, x, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2))) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 348.0s OverallTime, 5 OverallIterations, 6 TraceHistogramMax, 26.2s AutomataDifference, 0.0s DeadEndRemovalTime, 101.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 60 SDtfs, 2 SDslu, 125 SDs, 0 SdLazy, 50 SolverSat, 5 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 12.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 84 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 92.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=4, 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 19 NumberOfFragments, 72 HoareAnnotationTreeSize, 12 FomulaSimplifications, 211 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 249 FormulaSimplificationTreeSizeReductionInter, 101.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 58.6s SatisfiabilityAnalysisTime, 159.9s InterpolantComputationTime, 93 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 95 ConstructedInterpolants, 6 QuantifiedInterpolants, 13965 SizeOfPredicates, 12 NumberOfNonLiveVariables, 127 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 28/58 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...