./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 05489f97023e2a5894acdd30001ad3ce1a478731 ............................................................................................................................................................................................................................................................. 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_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 05489f97023e2a5894acdd30001ad3ce1a478731 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:43:35,678 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:43:35,679 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:43:35,689 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:43:35,689 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:43:35,690 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:43:35,691 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:43:35,693 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:43:35,694 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:43:35,694 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:43:35,695 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:43:35,695 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:43:35,696 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:43:35,697 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:43:35,698 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:43:35,698 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:43:35,699 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:43:35,701 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:43:35,702 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:43:35,703 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:43:35,704 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:43:35,705 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:43:35,707 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:43:35,707 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:43:35,707 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:43:35,708 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:43:35,709 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:43:35,710 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:43:35,710 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:43:35,711 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:43:35,711 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:43:35,712 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:43:35,712 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:43:35,713 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:43:35,713 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:43:35,714 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:43:35,714 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 23:43:35,724 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:43:35,725 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:43:35,725 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:43:35,725 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:43:35,726 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:43:35,726 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:43:35,726 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:43:35,726 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:43:35,726 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:43:35,726 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:43:35,726 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:43:35,727 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:43:35,727 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 23:43:35,727 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:43:35,727 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 23:43:35,727 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:43:35,728 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:43:35,728 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:43:35,728 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:43:35,730 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 23:43:35,730 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:43:35,730 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:43:35,730 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:43:35,730 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:43:35,730 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:43:35,730 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:43:35,731 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:43:35,731 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:43:35,731 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:43:35,731 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:43:35,731 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:43:35,731 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:43:35,731 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:43:35,731 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:43:35,732 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05489f97023e2a5894acdd30001ad3ce1a478731 [2018-10-26 23:43:35,759 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:43:35,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:43:35,777 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:43:35,778 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:43:35,779 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:43:35,779 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call_true-termination.c [2018-10-26 23:43:35,831 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/data/9b1b4b52a/a77a64afaec44bdb8371c29211862c7f/FLAGc66f94e77 [2018-10-26 23:43:36,200 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:43:36,201 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call_true-termination.c [2018-10-26 23:43:36,206 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/data/9b1b4b52a/a77a64afaec44bdb8371c29211862c7f/FLAGc66f94e77 [2018-10-26 23:43:36,216 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/data/9b1b4b52a/a77a64afaec44bdb8371c29211862c7f [2018-10-26 23:43:36,218 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:43:36,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 23:43:36,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:43:36,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:43:36,225 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:43:36,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:43:36" (1/1) ... [2018-10-26 23:43:36,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4698943a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:36, skipping insertion in model container [2018-10-26 23:43:36,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:43:36" (1/1) ... [2018-10-26 23:43:36,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:43:36,251 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:43:36,366 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:43:36,368 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:43:36,382 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:43:36,393 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:43:36,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:36 WrapperNode [2018-10-26 23:43:36,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:43:36,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:43:36,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:43:36,395 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:43:36,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:36" (1/1) ... [2018-10-26 23:43:36,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:36" (1/1) ... [2018-10-26 23:43:36,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:43:36,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:43:36,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:43:36,412 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:43:36,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:36" (1/1) ... [2018-10-26 23:43:36,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:36" (1/1) ... [2018-10-26 23:43:36,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:36" (1/1) ... [2018-10-26 23:43:36,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:36" (1/1) ... [2018-10-26 23:43:36,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:36" (1/1) ... [2018-10-26 23:43:36,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:36" (1/1) ... [2018-10-26 23:43:36,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:36" (1/1) ... [2018-10-26 23:43:36,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:43:36,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:43:36,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:43:36,429 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:43:36,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:43:36,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:43:36,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:43:36,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:43:36,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:43:36,568 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:43:36,568 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:43:36,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 23:43:36,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 23:43:36,892 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:43:36,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:43:36 BoogieIcfgContainer [2018-10-26 23:43:36,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:43:36,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:43:36,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:43:36,896 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:43:36,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:43:36" (1/3) ... [2018-10-26 23:43:36,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7690596d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:43:36, skipping insertion in model container [2018-10-26 23:43:36,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:36" (2/3) ... [2018-10-26 23:43:36,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7690596d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:43:36, skipping insertion in model container [2018-10-26 23:43:36,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:43:36" (3/3) ... [2018-10-26 23:43:36,899 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant_true-unreach-call_true-termination.c [2018-10-26 23:43:36,907 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:43:36,913 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:43:36,924 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:43:36,948 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:43:36,948 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:43:36,948 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:43:36,948 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:43:36,949 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:43:36,949 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:43:36,949 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:43:36,949 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:43:36,963 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-10-26 23:43:36,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-26 23:43:36,968 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:43:36,968 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:43:36,970 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:43:36,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:43:36,975 INFO L82 PathProgramCache]: Analyzing trace with hash 874356560, now seen corresponding path program 1 times [2018-10-26 23:43:36,977 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:43:37,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:43:37,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:43:37,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:43:37,016 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:43:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 23:43:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 23:43:37,068 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 23:43:37,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:43:37 BoogieIcfgContainer [2018-10-26 23:43:37,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:43:37,088 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 23:43:37,088 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 23:43:37,089 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 23:43:37,089 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:43:36" (3/4) ... [2018-10-26 23:43:37,092 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 23:43:37,092 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 23:43:37,093 INFO L168 Benchmark]: Toolchain (without parser) took 874.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 191.4 MB). Free memory was 961.2 MB in the beginning and 1.2 GB in the end (delta: -194.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:43:37,094 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:43:37,095 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.38 ms. Allocated memory is still 1.0 GB. Free memory was 961.2 MB in the beginning and 950.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 23:43:37,095 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.73 ms. Allocated memory is still 1.0 GB. Free memory is still 950.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:43:37,096 INFO L168 Benchmark]: Boogie Preprocessor took 16.81 ms. Allocated memory is still 1.0 GB. Free memory was 950.4 MB in the beginning and 947.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 23:43:37,096 INFO L168 Benchmark]: RCFGBuilder took 463.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 191.4 MB). Free memory was 947.7 MB in the beginning and 1.2 GB in the end (delta: -222.6 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2018-10-26 23:43:37,097 INFO L168 Benchmark]: TraceAbstraction took 194.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2018-10-26 23:43:37,097 INFO L168 Benchmark]: Witness Printer took 3.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:43:37,100 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 174.38 ms. Allocated memory is still 1.0 GB. Free memory was 961.2 MB in the beginning and 950.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.73 ms. Allocated memory is still 1.0 GB. Free memory is still 950.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.81 ms. Allocated memory is still 1.0 GB. Free memory was 950.4 MB in the beginning and 947.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 463.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 191.4 MB). Free memory was 947.7 MB in the beginning and 1.2 GB in the end (delta: -222.6 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 194.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 24, overapproximation of to_real at line 12, overapproximation of someBinaryArithmeticFLOAToperation at line 24. Possible FailurePath: [L9] float X, Y, S, R, D; [L10] int i; [L12] Y = 0 [L14] i = 0 VAL [i=0] [L14] COND TRUE i < 100000 [L16] X = __VERIFIER_nondet_float() [L17] D = __VERIFIER_nondet_float() [L21] S = Y [L22] Y = X [L23] R = X - S VAL [D=4, i=0, S=2, X=3, Y=3] [L24] COND TRUE R <= -D [L24] Y = S - D VAL [D=4, i=0, S=2, X=3] [L27] CALL __VERIFIER_assert(Y >= -129.f && Y <= 129.f) VAL [\old(cond)=0] [L5] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:43:39,136 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:43:39,138 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:43:39,150 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:43:39,150 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:43:39,151 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:43:39,152 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:43:39,153 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:43:39,155 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:43:39,155 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:43:39,156 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:43:39,156 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:43:39,157 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:43:39,158 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:43:39,159 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:43:39,159 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:43:39,160 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:43:39,162 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:43:39,163 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:43:39,165 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:43:39,165 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:43:39,166 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:43:39,168 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:43:39,169 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:43:39,169 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:43:39,170 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:43:39,171 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:43:39,171 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:43:39,172 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:43:39,173 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:43:39,173 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:43:39,174 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:43:39,174 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:43:39,174 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:43:39,175 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:43:39,176 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:43:39,176 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-10-26 23:43:39,189 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:43:39,190 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:43:39,190 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:43:39,191 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:43:39,191 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:43:39,191 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:43:39,191 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:43:39,191 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:43:39,192 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:43:39,192 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 23:43:39,192 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 23:43:39,193 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:43:39,193 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:43:39,193 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:43:39,193 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:43:39,193 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 23:43:39,194 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 23:43:39,194 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 23:43:39,194 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:43:39,194 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:43:39,194 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:43:39,194 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:43:39,195 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:43:39,195 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:43:39,195 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:43:39,195 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:43:39,195 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:43:39,195 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:43:39,196 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-26 23:43:39,196 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:43:39,196 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 23:43:39,196 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 23:43:39,196 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_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05489f97023e2a5894acdd30001ad3ce1a478731 [2018-10-26 23:43:39,233 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:43:39,251 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:43:39,255 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:43:39,256 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:43:39,256 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:43:39,257 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call_true-termination.c [2018-10-26 23:43:39,301 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/data/264e470e5/c535cdb77ac347fba364bbe4997025e4/FLAG12fef6aac [2018-10-26 23:43:39,681 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:43:39,682 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call_true-termination.c [2018-10-26 23:43:39,687 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/data/264e470e5/c535cdb77ac347fba364bbe4997025e4/FLAG12fef6aac [2018-10-26 23:43:39,699 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/data/264e470e5/c535cdb77ac347fba364bbe4997025e4 [2018-10-26 23:43:39,701 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:43:39,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 23:43:39,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:43:39,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:43:39,710 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:43:39,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:43:39" (1/1) ... [2018-10-26 23:43:39,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@470950e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:39, skipping insertion in model container [2018-10-26 23:43:39,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:43:39" (1/1) ... [2018-10-26 23:43:39,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:43:39,742 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:43:39,890 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:43:39,894 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:43:39,910 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:43:39,924 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:43:39,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:39 WrapperNode [2018-10-26 23:43:39,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:43:39,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:43:39,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:43:39,925 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:43:39,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:39" (1/1) ... [2018-10-26 23:43:39,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:39" (1/1) ... [2018-10-26 23:43:39,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:43:39,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:43:39,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:43:39,946 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:43:39,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:39" (1/1) ... [2018-10-26 23:43:39,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:39" (1/1) ... [2018-10-26 23:43:39,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:39" (1/1) ... [2018-10-26 23:43:39,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:39" (1/1) ... [2018-10-26 23:43:39,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:39" (1/1) ... [2018-10-26 23:43:39,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:39" (1/1) ... [2018-10-26 23:43:39,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:39" (1/1) ... [2018-10-26 23:43:39,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:43:39,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:43:39,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:43:39,969 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:43:39,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:43:40,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:43:40,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:43:40,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:43:40,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:43:40,025 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:43:40,026 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:43:40,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 23:43:40,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 23:43:40,682 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:43:40,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:43:40 BoogieIcfgContainer [2018-10-26 23:43:40,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:43:40,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:43:40,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:43:40,689 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:43:40,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:43:39" (1/3) ... [2018-10-26 23:43:40,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430eaba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:43:40, skipping insertion in model container [2018-10-26 23:43:40,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:43:39" (2/3) ... [2018-10-26 23:43:40,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430eaba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:43:40, skipping insertion in model container [2018-10-26 23:43:40,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:43:40" (3/3) ... [2018-10-26 23:43:40,693 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant_true-unreach-call_true-termination.c [2018-10-26 23:43:40,701 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:43:40,706 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:43:40,716 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:43:40,737 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 23:43:40,737 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:43:40,737 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:43:40,738 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:43:40,738 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:43:40,738 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:43:40,738 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:43:40,738 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:43:40,739 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:43:40,753 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-10-26 23:43:40,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-26 23:43:40,758 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:43:40,758 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:43:40,761 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:43:40,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:43:40,765 INFO L82 PathProgramCache]: Analyzing trace with hash 874356560, now seen corresponding path program 1 times [2018-10-26 23:43:40,769 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 23:43:40,770 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 23:43:40,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-10-26 23:43:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:43:40,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:43:41,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:43:41,041 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 23:43:41,051 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:43:41,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-26 23:43:41,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 23:43:41,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 23:43:41,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-26 23:43:41,069 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 7 states. [2018-10-26 23:43:41,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:43:41,995 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2018-10-26 23:43:41,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:43:41,997 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-10-26 23:43:41,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:43:42,004 INFO L225 Difference]: With dead ends: 64 [2018-10-26 23:43:42,005 INFO L226 Difference]: Without dead ends: 33 [2018-10-26 23:43:42,007 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:43:42,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-26 23:43:42,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2018-10-26 23:43:42,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-26 23:43:42,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-10-26 23:43:42,043 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 12 [2018-10-26 23:43:42,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:43:42,044 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-10-26 23:43:42,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 23:43:42,044 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2018-10-26 23:43:42,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-26 23:43:42,045 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:43:42,045 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:43:42,046 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:43:42,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:43:42,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1368016777, now seen corresponding path program 1 times [2018-10-26 23:43:42,047 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 23:43:42,047 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-10-26 23:43:42,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:43:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:43:42,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:43:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:43:42,482 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 23:43:42,490 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:43:42,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-26 23:43:42,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 23:43:42,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 23:43:42,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-26 23:43:42,492 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 7 states. [2018-10-26 23:43:43,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:43:43,161 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2018-10-26 23:43:43,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:43:43,162 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-10-26 23:43:43,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:43:43,164 INFO L225 Difference]: With dead ends: 40 [2018-10-26 23:43:43,164 INFO L226 Difference]: Without dead ends: 38 [2018-10-26 23:43:43,165 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:43:43,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-26 23:43:43,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2018-10-26 23:43:43,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-26 23:43:43,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-10-26 23:43:43,172 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2018-10-26 23:43:43,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:43:43,173 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-10-26 23:43:43,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 23:43:43,173 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-10-26 23:43:43,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-26 23:43:43,173 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:43:43,173 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:43:43,174 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:43:43,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:43:43,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1369863819, now seen corresponding path program 1 times [2018-10-26 23:43:43,175 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 23:43:43,175 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/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 [2018-10-26 23:43:43,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:43:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:43:43,218 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:43:43,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:43:43,249 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 23:43:43,258 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:43:43,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 23:43:43,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:43:43,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:43:43,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:43:43,260 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2018-10-26 23:43:43,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:43:43,480 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-10-26 23:43:43,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 23:43:43,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-10-26 23:43:43,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:43:43,482 INFO L225 Difference]: With dead ends: 36 [2018-10-26 23:43:43,482 INFO L226 Difference]: Without dead ends: 34 [2018-10-26 23:43:43,483 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:43:43,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-26 23:43:43,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2018-10-26 23:43:43,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-26 23:43:43,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-10-26 23:43:43,488 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2018-10-26 23:43:43,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:43:43,488 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-10-26 23:43:43,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:43:43,488 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-10-26 23:43:43,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-26 23:43:43,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:43:43,489 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:43:43,489 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:43:43,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:43:43,490 INFO L82 PathProgramCache]: Analyzing trace with hash -758059740, now seen corresponding path program 1 times [2018-10-26 23:43:43,490 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 23:43:43,490 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-10-26 23:43:43,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:43:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:43:43,676 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:43:45,337 WARN L179 SmtUtils]: Spent 1.49 s on a formula simplification that was a NOOP. DAG size: 25 [2018-10-26 23:43:47,715 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~X~0 (_ FloatingPoint 8 24)) (main_~S~0 (_ FloatingPoint 8 24)) (main_~D~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 128.0)) (.cse1 ((_ to_fp 8 24) RNE 129.0))) (and (fp.geq main_~X~0 (fp.neg .cse0)) (fp.leq main_~S~0 .cse1) (fp.leq main_~X~0 .cse0) (fp.leq (fp.sub RNE main_~X~0 main_~S~0) (fp.neg main_~D~0)) (= c_main_~Y~0 (fp.sub RNE main_~S~0 main_~D~0)) (fp.geq main_~D~0 (_ +zero 8 24)) (fp.leq main_~D~0 ((_ to_fp 8 24) RNE 16.0)) (fp.geq main_~S~0 (fp.neg .cse1))))) is different from true [2018-10-26 23:44:09,575 WARN L179 SmtUtils]: Spent 10.51 s on a formula simplification that was a NOOP. DAG size: 35 [2018-10-26 23:44:29,311 WARN L179 SmtUtils]: Spent 10.32 s on a formula simplification that was a NOOP. DAG size: 35 [2018-10-26 23:44:35,340 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~X~0 (_ FloatingPoint 8 24)) (main_~S~0 (_ FloatingPoint 8 24)) (main_~D~0 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) RNE 129.0))) (let ((.cse0 ((_ to_fp 8 24) RNE 128.0)) (.cse1 (fp.neg .cse2))) (and (fp.geq main_~X~0 (fp.neg .cse0)) (not (fp.geq (fp.sub RNE main_~S~0 main_~D~0) .cse1)) (fp.leq main_~S~0 .cse2) (fp.leq main_~X~0 .cse0) (fp.leq (fp.sub RNE main_~X~0 main_~S~0) (fp.neg main_~D~0)) (fp.geq main_~D~0 (_ +zero 8 24)) (fp.leq main_~D~0 ((_ to_fp 8 24) RNE 16.0)) (fp.geq main_~S~0 .cse1))))) is different from false [2018-10-26 23:44:37,347 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~X~0 (_ FloatingPoint 8 24)) (main_~S~0 (_ FloatingPoint 8 24)) (main_~D~0 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) RNE 129.0))) (let ((.cse0 ((_ to_fp 8 24) RNE 128.0)) (.cse1 (fp.neg .cse2))) (and (fp.geq main_~X~0 (fp.neg .cse0)) (not (fp.geq (fp.sub RNE main_~S~0 main_~D~0) .cse1)) (fp.leq main_~S~0 .cse2) (fp.leq main_~X~0 .cse0) (fp.leq (fp.sub RNE main_~X~0 main_~S~0) (fp.neg main_~D~0)) (fp.geq main_~D~0 (_ +zero 8 24)) (fp.leq main_~D~0 ((_ to_fp 8 24) RNE 16.0)) (fp.geq main_~S~0 .cse1))))) is different from true [2018-10-26 23:44:37,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:44:37,351 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 23:44:43,694 WARN L179 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 23:45:04,282 WARN L179 SmtUtils]: Spent 4.21 s on a formula simplification that was a NOOP. DAG size: 48 [2018-10-26 23:45:13,475 WARN L832 $PredicateComparison]: unable to prove that (forall ((v_prenex_1 (_ FloatingPoint 8 24)) (v_prenex_2 (_ FloatingPoint 8 24)) (main_~Y~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) RNE 129.0))) (let ((.cse2 ((_ to_fp 8 24) RNE 128.0)) (.cse0 (fp.neg .cse1))) (or (not (fp.leq (fp.sub RNE v_prenex_2 main_~Y~0) (fp.neg v_prenex_1))) (fp.geq (fp.sub RNE main_~Y~0 v_prenex_1) .cse0) (not (fp.leq main_~Y~0 .cse1)) (not (fp.leq v_prenex_1 ((_ to_fp 8 24) RNE 16.0))) (not (fp.geq v_prenex_2 (fp.neg .cse2))) (not (fp.leq v_prenex_2 .cse2)) (not (fp.geq v_prenex_1 (_ +zero 8 24))) (not (fp.geq main_~Y~0 .cse0)))))) is different from false [2018-10-26 23:45:15,482 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_prenex_1 (_ FloatingPoint 8 24)) (v_prenex_2 (_ FloatingPoint 8 24)) (main_~Y~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) RNE 129.0))) (let ((.cse2 ((_ to_fp 8 24) RNE 128.0)) (.cse0 (fp.neg .cse1))) (or (not (fp.leq (fp.sub RNE v_prenex_2 main_~Y~0) (fp.neg v_prenex_1))) (fp.geq (fp.sub RNE main_~Y~0 v_prenex_1) .cse0) (not (fp.leq main_~Y~0 .cse1)) (not (fp.leq v_prenex_1 ((_ to_fp 8 24) RNE 16.0))) (not (fp.geq v_prenex_2 (fp.neg .cse2))) (not (fp.leq v_prenex_2 .cse2)) (not (fp.geq v_prenex_1 (_ +zero 8 24))) (not (fp.geq main_~Y~0 .cse0)))))) is different from true [2018-10-26 23:45:15,491 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:45:15,491 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 23:45:15,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:45:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:45:16,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:45:41,339 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-26 23:45:47,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:45:47,417 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 23:45:55,583 WARN L179 SmtUtils]: Spent 844.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-26 23:46:15,168 WARN L179 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-10-26 23:46:17,230 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) RNE 129.0))) (let ((.cse0 (not (fp.leq c_main_~Y~0 .cse2))) (.cse1 (not (fp.geq c_main_~Y~0 (fp.neg .cse2))))) (and (or (forall ((v_prenex_5 (_ FloatingPoint 8 24)) (v_prenex_6 (_ FloatingPoint 8 24))) (or (fp.leq (fp.sub RNE c_main_~Y~0 v_prenex_5) ((_ to_fp 8 24) RNE 129.0)) (not (fp.leq v_prenex_6 (fp.neg v_prenex_5))) (not (fp.leq v_prenex_5 ((_ to_fp 8 24) RNE 16.0))) (not (fp.geq v_prenex_5 (_ +zero 8 24))))) .cse0 .cse1) (or .cse0 (forall ((v_main_~D~0_8 (_ FloatingPoint 8 24)) (main_~R~0 (_ FloatingPoint 8 24))) (or (not (fp.leq main_~R~0 (fp.neg v_main_~D~0_8))) (fp.geq (fp.sub RNE c_main_~Y~0 v_main_~D~0_8) (fp.neg ((_ to_fp 8 24) RNE 129.0))) (not (fp.leq v_main_~D~0_8 ((_ to_fp 8 24) RNE 16.0))) (not (fp.geq v_main_~D~0_8 (_ +zero 8 24))))) .cse1)))) is different from true [2018-10-26 23:46:17,253 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 23:46:17,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 17 [2018-10-26 23:46:17,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-26 23:46:17,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-26 23:46:17,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=303, Unknown=28, NotChecked=156, Total=552 [2018-10-26 23:46:17,254 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 17 states. [2018-10-26 23:46:21,812 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2018-10-26 23:46:37,344 WARN L179 SmtUtils]: Spent 9.81 s on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2018-10-26 23:46:54,899 WARN L179 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2018-10-26 23:47:02,453 WARN L179 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2018-10-26 23:47:07,659 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) RNE 129.0))) (and (exists ((v_prenex_3 (_ FloatingPoint 8 24)) (v_prenex_4 (_ FloatingPoint 8 24)) (main_~R~0 (_ FloatingPoint 8 24)) (main_~D~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 16.0))) (and (= (fp.sub RNE (fp.sub RNE ((_ to_fp 8 24) RNE (_ bv0 32)) v_prenex_3) main_~D~0) c_main_~Y~0) (fp.leq v_prenex_4 (fp.neg v_prenex_3)) (fp.leq v_prenex_3 .cse0) (fp.geq v_prenex_3 (_ +zero 8 24)) (fp.geq main_~D~0 (_ +zero 8 24)) (fp.leq main_~D~0 .cse0) (fp.leq main_~R~0 (fp.neg main_~D~0))))) (fp.leq c_main_~S~0 .cse1) (exists ((main_~X~0 (_ FloatingPoint 8 24)) (main_~S~0 (_ FloatingPoint 8 24)) (main_~D~0 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) RNE 128.0)) (.cse3 ((_ to_fp 8 24) RNE 129.0))) (and (fp.geq main_~X~0 (fp.neg .cse2)) (fp.leq main_~S~0 .cse3) (fp.leq main_~X~0 .cse2) (fp.leq (fp.sub RNE main_~X~0 main_~S~0) (fp.neg main_~D~0)) (= c_main_~Y~0 (fp.sub RNE main_~S~0 main_~D~0)) (fp.geq main_~D~0 (_ +zero 8 24)) (fp.leq main_~D~0 ((_ to_fp 8 24) RNE 16.0)) (fp.geq main_~S~0 (fp.neg .cse3))))) (exists ((v_prenex_3 (_ FloatingPoint 8 24)) (main_~R~0 (_ FloatingPoint 8 24))) (and (fp.leq main_~R~0 (fp.neg v_prenex_3)) (fp.leq v_prenex_3 ((_ to_fp 8 24) RNE 16.0)) (= (fp.sub RNE ((_ to_fp 8 24) RNE (_ bv0 32)) v_prenex_3) c_main_~S~0) (fp.geq v_prenex_3 (_ +zero 8 24)))) (exists ((main_~X~0 (_ FloatingPoint 8 24))) (let ((.cse4 ((_ to_fp 8 24) RNE 128.0))) (and (= (fp.sub RNE main_~X~0 c_main_~S~0) c_main_~R~0) (fp.geq main_~X~0 (fp.neg .cse4)) (fp.leq main_~X~0 .cse4)))) (fp.geq c_main_~D~0 (_ +zero 8 24)) (fp.leq c_main_~D~0 ((_ to_fp 8 24) RNE 16.0)) (fp.geq c_main_~S~0 (fp.neg .cse1)))) is different from false [2018-10-26 23:47:24,026 WARN L179 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 28 [2018-10-26 23:48:06,295 WARN L179 SmtUtils]: Spent 9.41 s on a formula simplification that was a NOOP. DAG size: 32 [2018-10-26 23:49:30,489 WARN L179 SmtUtils]: Spent 57.16 s on a formula simplification. DAG size of input: 43 DAG size of output: 8 [2018-10-26 23:49:41,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:49:41,765 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2018-10-26 23:49:41,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-26 23:49:41,772 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 21 [2018-10-26 23:49:41,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:49:41,773 INFO L225 Difference]: With dead ends: 54 [2018-10-26 23:49:41,773 INFO L226 Difference]: Without dead ends: 52 [2018-10-26 23:49:41,774 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 284.2s TimeCoverageRelationStatistics Valid=145, Invalid=629, Unknown=58, NotChecked=290, Total=1122 [2018-10-26 23:49:41,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-26 23:49:41,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 37. [2018-10-26 23:49:41,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-26 23:49:41,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2018-10-26 23:49:41,787 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 21 [2018-10-26 23:49:41,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:49:41,787 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2018-10-26 23:49:41,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-26 23:49:41,787 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2018-10-26 23:49:41,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-26 23:49:41,789 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:49:41,790 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:49:41,790 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:49:41,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:49:41,790 INFO L82 PathProgramCache]: Analyzing trace with hash 199698734, now seen corresponding path program 1 times [2018-10-26 23:49:41,790 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 23:49:41,791 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-10-26 23:49:41,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:49:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:49:41,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:49:45,322 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-26 23:49:46,765 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:49:46,765 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 23:49:50,921 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-26 23:50:03,199 WARN L179 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-10-26 23:50:26,668 WARN L179 SmtUtils]: Spent 6.55 s on a formula simplification. DAG size of input: 33 DAG size of output: 19 [2018-10-26 23:50:26,677 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:50:26,677 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 23:50:26,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:50:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:50:27,434 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:50:33,114 WARN L179 SmtUtils]: Spent 2.43 s on a formula simplification that was a NOOP. DAG size: 29 [2018-10-26 23:50:38,969 WARN L179 SmtUtils]: Spent 3.01 s on a formula simplification that was a NOOP. DAG size: 32 [2018-10-26 23:50:41,271 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~X~0 (_ FloatingPoint 8 24)) (v_prenex_9 (_ FloatingPoint 8 24)) (main_~D~0 (_ FloatingPoint 8 24))) (let ((.cse2 (fp.add RNE ((_ to_fp 8 24) RNE (_ bv0 32)) v_prenex_9))) (let ((.cse0 ((_ to_fp 8 24) RNE 128.0)) (.cse1 (fp.sub RNE main_~X~0 .cse2)) (.cse3 ((_ to_fp 8 24) RNE 16.0))) (and (fp.geq main_~X~0 (fp.neg .cse0)) (fp.geq v_prenex_9 (_ +zero 8 24)) (fp.geq .cse1 main_~D~0) (= c_main_~Y~0 (fp.add RNE .cse2 main_~D~0)) (fp.leq main_~X~0 .cse0) (fp.geq main_~D~0 (_ +zero 8 24)) (not (fp.leq .cse1 (fp.neg main_~D~0))) (fp.leq main_~D~0 .cse3) (fp.leq v_prenex_9 .cse3))))) is different from true [2018-10-26 23:50:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2018-10-26 23:50:41,938 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 23:50:44,815 WARN L179 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-26 23:50:49,239 WARN L179 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-26 23:51:19,791 WARN L179 SmtUtils]: Spent 5.46 s on a formula simplification that was a NOOP. DAG size: 50 [2018-10-26 23:51:21,870 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse6 ((_ to_fp 8 24) RNE 129.0))) (let ((.cse0 (not (fp.leq c_main_~Y~0 .cse6))) (.cse3 (not (fp.geq c_main_~Y~0 (fp.neg .cse6))))) (and (or .cse0 (forall ((v_main_~X~0_6 (_ FloatingPoint 8 24)) (v_main_~D~0_10 (_ FloatingPoint 8 24))) (let ((.cse1 (fp.sub RNE v_main_~X~0_6 c_main_~Y~0)) (.cse2 ((_ to_fp 8 24) RNE 128.0))) (or (not (fp.geq .cse1 v_main_~D~0_10)) (not (fp.leq v_main_~D~0_10 ((_ to_fp 8 24) RNE 16.0))) (not (fp.leq v_main_~X~0_6 .cse2)) (fp.leq .cse1 (fp.neg v_main_~D~0_10)) (fp.geq (fp.add RNE c_main_~Y~0 v_main_~D~0_10) (fp.neg ((_ to_fp 8 24) RNE 129.0))) (not (fp.geq v_main_~D~0_10 (_ +zero 8 24))) (not (fp.geq v_main_~X~0_6 (fp.neg .cse2)))))) .cse3) (or .cse0 (forall ((v_prenex_11 (_ FloatingPoint 8 24)) (v_prenex_10 (_ FloatingPoint 8 24))) (let ((.cse5 ((_ to_fp 8 24) RNE 128.0)) (.cse4 (fp.sub RNE v_prenex_10 c_main_~Y~0))) (or (not (fp.geq v_prenex_11 (_ +zero 8 24))) (not (fp.leq v_prenex_11 ((_ to_fp 8 24) RNE 16.0))) (fp.leq .cse4 (fp.neg v_prenex_11)) (fp.leq (fp.add RNE c_main_~Y~0 v_prenex_11) ((_ to_fp 8 24) RNE 129.0)) (not (fp.geq v_prenex_10 (fp.neg .cse5))) (not (fp.leq v_prenex_10 .cse5)) (not (fp.geq .cse4 v_prenex_11))))) .cse3)))) is different from true [2018-10-26 23:51:21,892 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 23:51:21,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 14 [2018-10-26 23:51:21,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-26 23:51:21,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-26 23:51:21,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=337, Unknown=9, NotChecked=78, Total=506 [2018-10-26 23:51:21,893 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 14 states. [2018-10-26 23:51:25,440 WARN L179 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2018-10-26 23:51:30,554 WARN L179 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26 [2018-10-26 23:51:43,577 WARN L179 SmtUtils]: Spent 11.00 s on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2018-10-26 23:51:55,433 WARN L179 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2018-10-26 23:52:36,545 WARN L179 SmtUtils]: Spent 22.08 s on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2018-10-26 23:52:50,083 WARN L179 SmtUtils]: Spent 4.40 s on a formula simplification that was a NOOP. DAG size: 41 [2018-10-26 23:52:54,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:52:54,238 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2018-10-26 23:52:54,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-26 23:52:54,244 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2018-10-26 23:52:54,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:52:54,245 INFO L225 Difference]: With dead ends: 69 [2018-10-26 23:52:54,245 INFO L226 Difference]: Without dead ends: 67 [2018-10-26 23:52:54,245 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 171.5s TimeCoverageRelationStatistics Valid=178, Invalid=624, Unknown=18, NotChecked=110, Total=930 [2018-10-26 23:52:54,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-26 23:52:54,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 42. [2018-10-26 23:52:54,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-26 23:52:54,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2018-10-26 23:52:54,257 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 23 [2018-10-26 23:52:54,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:52:54,257 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2018-10-26 23:52:54,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-26 23:52:54,257 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2018-10-26 23:52:54,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-26 23:52:54,258 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:54,258 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:52:54,258 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:54,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:54,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1080164944, now seen corresponding path program 1 times [2018-10-26 23:52:54,259 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 23:52:54,259 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-10-26 23:52:54,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:54,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:52:57,120 WARN L179 SmtUtils]: Spent 2.36 s on a formula simplification that was a NOOP. DAG size: 22 [2018-10-26 23:53:00,870 WARN L179 SmtUtils]: Spent 3.19 s on a formula simplification that was a NOOP. DAG size: 25 [2018-10-26 23:53:02,994 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~X~0 (_ FloatingPoint 8 24)) (main_~S~0 (_ FloatingPoint 8 24)) (main_~D~0 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) RNE 128.0))) (let ((.cse1 (fp.neg .cse2)) (.cse0 (fp.sub RNE main_~X~0 main_~S~0))) (and (not (fp.leq .cse0 (fp.neg main_~D~0))) (fp.geq main_~S~0 .cse1) (fp.geq main_~X~0 .cse1) (fp.geq .cse0 main_~D~0) (fp.leq main_~X~0 .cse2) (fp.leq main_~S~0 .cse2) (fp.geq main_~D~0 (_ +zero 8 24)) (fp.leq main_~D~0 ((_ to_fp 8 24) RNE 16.0)) (= (fp.add RNE main_~S~0 main_~D~0) c_main_~Y~0))))) is different from true [2018-10-26 23:53:33,003 WARN L179 SmtUtils]: Spent 18.90 s on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2018-10-26 23:53:39,330 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((main_~X~0 (_ FloatingPoint 8 24)) (main_~S~0 (_ FloatingPoint 8 24)) (main_~D~0 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) RNE 128.0))) (let ((.cse1 (fp.neg .cse2)) (.cse0 (fp.sub RNE main_~X~0 main_~S~0))) (and (not (fp.leq .cse0 (fp.neg main_~D~0))) (fp.geq main_~S~0 .cse1) (fp.geq main_~X~0 .cse1) (fp.geq .cse0 main_~D~0) (not (fp.leq (fp.add RNE main_~S~0 main_~D~0) ((_ to_fp 8 24) RNE 129.0))) (fp.leq main_~X~0 .cse2) (fp.leq main_~S~0 .cse2) (fp.geq main_~D~0 (_ +zero 8 24)) (fp.leq main_~D~0 ((_ to_fp 8 24) RNE 16.0)))))) (= (bvadd c___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) is different from true [2018-10-26 23:53:45,361 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~X~0 (_ FloatingPoint 8 24)) (main_~S~0 (_ FloatingPoint 8 24)) (main_~D~0 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) RNE 128.0))) (let ((.cse1 (fp.neg .cse2)) (.cse0 (fp.sub RNE main_~X~0 main_~S~0))) (and (not (fp.leq .cse0 (fp.neg main_~D~0))) (fp.geq main_~S~0 .cse1) (fp.geq main_~X~0 .cse1) (fp.geq .cse0 main_~D~0) (not (fp.leq (fp.add RNE main_~S~0 main_~D~0) ((_ to_fp 8 24) RNE 129.0))) (fp.leq main_~X~0 .cse2) (fp.leq main_~S~0 .cse2) (fp.geq main_~D~0 (_ +zero 8 24)) (fp.leq main_~D~0 ((_ to_fp 8 24) RNE 16.0)))))) is different from false [2018-10-26 23:53:47,370 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~X~0 (_ FloatingPoint 8 24)) (main_~S~0 (_ FloatingPoint 8 24)) (main_~D~0 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) RNE 128.0))) (let ((.cse1 (fp.neg .cse2)) (.cse0 (fp.sub RNE main_~X~0 main_~S~0))) (and (not (fp.leq .cse0 (fp.neg main_~D~0))) (fp.geq main_~S~0 .cse1) (fp.geq main_~X~0 .cse1) (fp.geq .cse0 main_~D~0) (not (fp.leq (fp.add RNE main_~S~0 main_~D~0) ((_ to_fp 8 24) RNE 129.0))) (fp.leq main_~X~0 .cse2) (fp.leq main_~S~0 .cse2) (fp.geq main_~D~0 (_ +zero 8 24)) (fp.leq main_~D~0 ((_ to_fp 8 24) RNE 16.0)))))) is different from true [2018-10-26 23:53:47,372 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2018-10-26 23:53:47,372 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 23:53:58,564 WARN L179 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-26 23:54:07,018 WARN L179 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-26 23:54:34,061 WARN L179 SmtUtils]: Spent 3.68 s on a formula simplification that was a NOOP. DAG size: 50 [2018-10-26 23:54:36,120 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse6 ((_ to_fp 8 24) RNE 129.0))) (let ((.cse2 (not (fp.leq c_main_~Y~0 .cse6))) (.cse3 (not (fp.geq c_main_~Y~0 (fp.neg .cse6))))) (and (or (forall ((v_main_~X~0_7 (_ FloatingPoint 8 24)) (v_main_~D~0_11 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 128.0)) (.cse1 (fp.sub RNE v_main_~X~0_7 c_main_~Y~0))) (or (not (fp.leq v_main_~D~0_11 ((_ to_fp 8 24) RNE 16.0))) (not (fp.geq v_main_~X~0_7 (fp.neg .cse0))) (not (fp.leq v_main_~X~0_7 .cse0)) (not (fp.geq .cse1 v_main_~D~0_11)) (not (fp.geq v_main_~D~0_11 (_ +zero 8 24))) (fp.geq (fp.add RNE c_main_~Y~0 v_main_~D~0_11) (fp.neg ((_ to_fp 8 24) RNE 129.0))) (fp.leq .cse1 (fp.neg v_main_~D~0_11))))) .cse2 .cse3) (or (forall ((v_prenex_13 (_ FloatingPoint 8 24)) (v_prenex_12 (_ FloatingPoint 8 24))) (let ((.cse4 (fp.sub RNE v_prenex_12 c_main_~Y~0)) (.cse5 ((_ to_fp 8 24) RNE 128.0))) (or (not (fp.geq .cse4 v_prenex_13)) (fp.leq .cse4 (fp.neg v_prenex_13)) (not (fp.geq v_prenex_13 (_ +zero 8 24))) (not (fp.leq v_prenex_12 .cse5)) (fp.leq (fp.add RNE c_main_~Y~0 v_prenex_13) ((_ to_fp 8 24) RNE 129.0)) (not (fp.geq v_prenex_12 (fp.neg .cse5))) (not (fp.leq v_prenex_13 ((_ to_fp 8 24) RNE 16.0)))))) .cse2 .cse3)))) is different from true [2018-10-26 23:54:36,128 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:54:36,129 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_663ec435-bbe3-4846-8fc5-2e4c69a4291f/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 23:54:36,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:54:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:54:38,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:55:14,724 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_prenex_14 (_ FloatingPoint 8 24)) (main_~S~0 (_ FloatingPoint 8 24)) (main_~R~0 (_ FloatingPoint 8 24)) (main_~D~0 (_ FloatingPoint 8 24))) (let ((.cse0 (fp.sub RNE main_~S~0 ((_ to_fp 8 24) RNE (_ bv0 32)))) (.cse1 ((_ to_fp 8 24) RNE 16.0))) (and (not (fp.leq .cse0 (fp.neg v_prenex_14))) (not (fp.geq .cse0 v_prenex_14)) (fp.geq v_prenex_14 (_ +zero 8 24)) (fp.leq main_~S~0 ((_ to_fp 8 24) RNE 128.0)) (fp.geq main_~D~0 (_ +zero 8 24)) (fp.geq main_~R~0 main_~D~0) (fp.leq main_~D~0 .cse1) (fp.leq v_prenex_14 .cse1) (= (fp.add RNE main_~S~0 main_~D~0) c_main_~Y~0)))) is different from true [2018-10-26 23:55:25,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2018-10-26 23:55:25,369 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 23:55:38,727 WARN L179 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 16 [2018-10-26 23:56:13,520 WARN L179 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2018-10-26 23:56:15,569 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) RNE 129.0))) (let ((.cse0 (not (fp.leq c_main_~Y~0 .cse2))) (.cse1 (not (fp.geq c_main_~Y~0 (fp.neg .cse2))))) (and (or (forall ((v_prenex_17 (_ FloatingPoint 8 24)) (v_prenex_16 (_ FloatingPoint 8 24))) (or (not (fp.geq v_prenex_16 v_prenex_17)) (fp.leq (fp.add RNE c_main_~Y~0 v_prenex_17) ((_ to_fp 8 24) RNE 129.0)) (not (fp.geq v_prenex_17 (_ +zero 8 24))) (not (fp.leq v_prenex_17 ((_ to_fp 8 24) RNE 16.0))))) .cse0 .cse1) (or .cse0 .cse1 (forall ((main_~R~0 (_ FloatingPoint 8 24)) (v_main_~D~0_12 (_ FloatingPoint 8 24))) (or (not (fp.geq v_main_~D~0_12 (_ +zero 8 24))) (not (fp.geq main_~R~0 v_main_~D~0_12)) (not (fp.leq v_main_~D~0_12 ((_ to_fp 8 24) RNE 16.0))) (fp.geq (fp.add RNE c_main_~Y~0 v_main_~D~0_12) (fp.neg ((_ to_fp 8 24) RNE 129.0))))))))) is different from true [2018-10-26 23:56:15,590 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 23:56:15,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 19 [2018-10-26 23:56:15,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-26 23:56:15,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-26 23:56:15,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=365, Unknown=40, NotChecked=270, Total=756 [2018-10-26 23:56:15,591 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 19 states. [2018-10-26 23:56:37,968 WARN L179 SmtUtils]: Spent 9.60 s on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2018-10-26 23:56:54,099 WARN L179 SmtUtils]: Spent 4.82 s on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2018-10-26 23:57:10,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 23:57:10,833 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:122) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:191) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:150) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:354) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:382) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:673) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:602) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 49 more [2018-10-26 23:57:10,836 INFO L168 Benchmark]: Toolchain (without parser) took 811134.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.1 MB). Free memory was 949.2 MB in the beginning and 877.4 MB in the end (delta: 71.8 MB). Peak memory consumption was 257.9 MB. Max. memory is 11.5 GB. [2018-10-26 23:57:10,837 INFO L168 Benchmark]: CDTParser took 0.50 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. [2018-10-26 23:57:10,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.50 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 938.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 23:57:10,838 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.68 ms. Allocated memory is still 1.0 GB. Free memory was 938.5 MB in the beginning and 933.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 23:57:10,838 INFO L168 Benchmark]: Boogie Preprocessor took 21.51 ms. Allocated memory is still 1.0 GB. Free memory is still 933.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:57:10,838 INFO L168 Benchmark]: RCFGBuilder took 714.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 933.1 MB in the beginning and 1.1 GB in the end (delta: -172.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2018-10-26 23:57:10,839 INFO L168 Benchmark]: TraceAbstraction took 810152.63 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 877.4 MB in the end (delta: 221.3 MB). Peak memory consumption was 284.2 MB. Max. memory is 11.5 GB. [2018-10-26 23:57:10,854 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 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 221.50 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 938.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.68 ms. Allocated memory is still 1.0 GB. Free memory was 938.5 MB in the beginning and 933.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.51 ms. Allocated memory is still 1.0 GB. Free memory is still 933.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 714.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 933.1 MB in the beginning and 1.1 GB in the end (delta: -172.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 810152.63 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 877.4 MB in the end (delta: 221.3 MB). Peak memory consumption was 284.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...