./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/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 aa2086ab05aa915f1fa31296bc02fdb3a78fa087 .............................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/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 aa2086ab05aa915f1fa31296bc02fdb3a78fa087 ....................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 11:05:09,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:05:09,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:05:09,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:05:09,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:05:09,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:05:09,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:05:09,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:05:09,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:05:09,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:05:09,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:05:09,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:05:09,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:05:09,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:05:09,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:05:09,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:05:09,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:05:09,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:05:09,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:05:09,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:05:09,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:05:09,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:05:09,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:05:09,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:05:09,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:05:09,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:05:09,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:05:09,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:05:09,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:05:09,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:05:09,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:05:09,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:05:09,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:05:09,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:05:09,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:05:09,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:05:09,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:05:09,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:05:09,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:05:09,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:05:09,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:05:09,535 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 11:05:09,545 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:05:09,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:05:09,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 11:05:09,545 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 11:05:09,546 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 11:05:09,546 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 11:05:09,546 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 11:05:09,546 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 11:05:09,546 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 11:05:09,546 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 11:05:09,546 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 11:05:09,546 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 11:05:09,547 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 11:05:09,547 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 11:05:09,547 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 11:05:09,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:05:09,547 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 11:05:09,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 11:05:09,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 11:05:09,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:05:09,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 11:05:09,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 11:05:09,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 11:05:09,548 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 11:05:09,548 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 11:05:09,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:05:09,549 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:05:09,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 11:05:09,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:05:09,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 11:05:09,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 11:05:09,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:05:09,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:05:09,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 11:05:09,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 11:05:09,550 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 11:05:09,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 11:05:09,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 11:05:09,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:05:09,550 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 11:05:09,550 INFO L138 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/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/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 -> aa2086ab05aa915f1fa31296bc02fdb3a78fa087 [2019-12-07 11:05:09,652 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:05:09,659 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:05:09,661 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:05:09,662 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:05:09,662 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:05:09,663 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2019-12-07 11:05:09,700 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/utaipan/data/ea682dbf3/cd33086f731e48dcb4f2bb50df3fa6ed/FLAGd1c240fc9 [2019-12-07 11:05:10,044 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:05:10,045 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2019-12-07 11:05:10,050 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/utaipan/data/ea682dbf3/cd33086f731e48dcb4f2bb50df3fa6ed/FLAGd1c240fc9 [2019-12-07 11:05:10,459 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/utaipan/data/ea682dbf3/cd33086f731e48dcb4f2bb50df3fa6ed [2019-12-07 11:05:10,461 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:05:10,462 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:05:10,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:05:10,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:05:10,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:05:10,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:05:10" (1/1) ... [2019-12-07 11:05:10,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc4ab00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:10, skipping insertion in model container [2019-12-07 11:05:10,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:05:10" (1/1) ... [2019-12-07 11:05:10,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:05:10,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:05:10,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:05:10,672 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:05:10,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:05:10,716 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:05:10,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:10 WrapperNode [2019-12-07 11:05:10,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:05:10,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:05:10,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:05:10,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:05:10,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:10" (1/1) ... [2019-12-07 11:05:10,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:10" (1/1) ... [2019-12-07 11:05:10,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:05:10,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:05:10,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:05:10,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:05:10,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:10" (1/1) ... [2019-12-07 11:05:10,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:10" (1/1) ... [2019-12-07 11:05:10,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:10" (1/1) ... [2019-12-07 11:05:10,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:10" (1/1) ... [2019-12-07 11:05:10,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:10" (1/1) ... [2019-12-07 11:05:10,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:10" (1/1) ... [2019-12-07 11:05:10,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:10" (1/1) ... [2019-12-07 11:05:10,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:05:10,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:05:10,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:05:10,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:05:10,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/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 [2019-12-07 11:05:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 11:05:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 11:05:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 11:05:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 11:05:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:05:10,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:05:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 11:05:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-12-07 11:05:10,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 11:05:11,214 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:05:11,214 INFO L287 CfgBuilder]: Removed 24 assume(true) statements. [2019-12-07 11:05:11,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:05:11 BoogieIcfgContainer [2019-12-07 11:05:11,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:05:11,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 11:05:11,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 11:05:11,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 11:05:11,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 11:05:10" (1/3) ... [2019-12-07 11:05:11,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368ad7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:05:11, skipping insertion in model container [2019-12-07 11:05:11,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:10" (2/3) ... [2019-12-07 11:05:11,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368ad7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:05:11, skipping insertion in model container [2019-12-07 11:05:11,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:05:11" (3/3) ... [2019-12-07 11:05:11,220 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2019-12-07 11:05:11,226 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 11:05:11,231 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 11:05:11,238 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 11:05:11,254 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 11:05:11,254 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 11:05:11,254 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 11:05:11,254 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:05:11,254 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:05:11,254 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 11:05:11,254 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:05:11,254 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 11:05:11,264 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2019-12-07 11:05:11,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 11:05:11,269 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:05:11,269 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:05:11,270 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:05:11,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:05:11,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1633588150, now seen corresponding path program 1 times [2019-12-07 11:05:11,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:05:11,280 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302593497] [2019-12-07 11:05:11,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:05:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:05:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:05:11,360 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302593497] [2019-12-07 11:05:11,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:05:11,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 11:05:11,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593689611] [2019-12-07 11:05:11,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 11:05:11,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:05:11,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 11:05:11,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 11:05:11,374 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2019-12-07 11:05:11,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:05:11,389 INFO L93 Difference]: Finished difference Result 88 states and 149 transitions. [2019-12-07 11:05:11,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 11:05:11,390 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 11:05:11,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:05:11,397 INFO L225 Difference]: With dead ends: 88 [2019-12-07 11:05:11,397 INFO L226 Difference]: Without dead ends: 42 [2019-12-07 11:05:11,399 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 11:05:11,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-12-07 11:05:11,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-12-07 11:05:11,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-12-07 11:05:11,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2019-12-07 11:05:11,424 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 60 transitions. Word has length 10 [2019-12-07 11:05:11,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:05:11,424 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 60 transitions. [2019-12-07 11:05:11,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 11:05:11,424 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 60 transitions. [2019-12-07 11:05:11,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 11:05:11,425 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:05:11,425 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:05:11,425 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:05:11,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:05:11,425 INFO L82 PathProgramCache]: Analyzing trace with hash -602651289, now seen corresponding path program 1 times [2019-12-07 11:05:11,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:05:11,426 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627632631] [2019-12-07 11:05:11,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:05:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:05:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:05:11,506 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 11:05:11,507 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 11:05:11,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 11:05:11 BoogieIcfgContainer [2019-12-07 11:05:11,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 11:05:11,528 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:05:11,528 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:05:11,528 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:05:11,528 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:05:11" (3/4) ... [2019-12-07 11:05:11,531 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 11:05:11,531 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:05:11,532 INFO L168 Benchmark]: Toolchain (without parser) took 1069.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -69.1 MB). Peak memory consumption was 54.1 MB. Max. memory is 11.5 GB. [2019-12-07 11:05:11,533 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:05:11,533 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -168.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-12-07 11:05:11,534 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 11:05:11,534 INFO L168 Benchmark]: Boogie Preprocessor took 28.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 11:05:11,534 INFO L168 Benchmark]: RCFGBuilder took 434.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 60.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. [2019-12-07 11:05:11,535 INFO L168 Benchmark]: TraceAbstraction took 312.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2019-12-07 11:05:11,535 INFO L168 Benchmark]: Witness Printer took 3.05 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:05:11,537 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 253.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -168.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 434.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 60.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 312.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.05 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={3:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={3:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={3:0}] [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, Zero_fmod={3:0}] [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() VAL [one_fmod=1, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 45 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: 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 0.1.25-f470102 [2019-12-07 11:05:13,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:05:13,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:05:13,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:05:13,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:05:13,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:05:13,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:05:13,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:05:13,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:05:13,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:05:13,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:05:13,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:05:13,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:05:13,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:05:13,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:05:13,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:05:13,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:05:13,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:05:13,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:05:13,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:05:13,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:05:13,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:05:13,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:05:13,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:05:13,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:05:13,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:05:13,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:05:13,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:05:13,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:05:13,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:05:13,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:05:13,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:05:13,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:05:13,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:05:13,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:05:13,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:05:13,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:05:13,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:05:13,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:05:13,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:05:13,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:05:13,052 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 11:05:13,062 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:05:13,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:05:13,063 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 11:05:13,063 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 11:05:13,064 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 11:05:13,064 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 11:05:13,064 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 11:05:13,064 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 11:05:13,064 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 11:05:13,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:05:13,065 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 11:05:13,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 11:05:13,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:05:13,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 11:05:13,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 11:05:13,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 11:05:13,066 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 11:05:13,066 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 11:05:13,066 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 11:05:13,066 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 11:05:13,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:05:13,066 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:05:13,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 11:05:13,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:05:13,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 11:05:13,067 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 11:05:13,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 11:05:13,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:05:13,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:05:13,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 11:05:13,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 11:05:13,067 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 11:05:13,068 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 11:05:13,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 11:05:13,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:05:13,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 11:05:13,068 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/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 -> aa2086ab05aa915f1fa31296bc02fdb3a78fa087 [2019-12-07 11:05:13,236 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:05:13,244 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:05:13,247 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:05:13,248 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:05:13,248 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:05:13,249 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2019-12-07 11:05:13,293 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/utaipan/data/8c3e52ad1/08542a7e5f3049639d4eefde77bf0de3/FLAG7929718d3 [2019-12-07 11:05:13,620 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:05:13,620 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2019-12-07 11:05:13,625 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/utaipan/data/8c3e52ad1/08542a7e5f3049639d4eefde77bf0de3/FLAG7929718d3 [2019-12-07 11:05:13,633 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/utaipan/data/8c3e52ad1/08542a7e5f3049639d4eefde77bf0de3 [2019-12-07 11:05:13,635 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:05:13,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:05:13,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:05:13,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:05:13,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:05:13,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:05:13" (1/1) ... [2019-12-07 11:05:13,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58d3a828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:13, skipping insertion in model container [2019-12-07 11:05:13,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:05:13" (1/1) ... [2019-12-07 11:05:13,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:05:13,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:05:13,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:05:13,802 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:05:13,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:05:13,896 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:05:13,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:13 WrapperNode [2019-12-07 11:05:13,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:05:13,897 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:05:13,897 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:05:13,897 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:05:13,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:13" (1/1) ... [2019-12-07 11:05:13,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:13" (1/1) ... [2019-12-07 11:05:13,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:05:13,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:05:13,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:05:13,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:05:13,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:13" (1/1) ... [2019-12-07 11:05:13,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:13" (1/1) ... [2019-12-07 11:05:13,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:13" (1/1) ... [2019-12-07 11:05:13,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:13" (1/1) ... [2019-12-07 11:05:13,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:13" (1/1) ... [2019-12-07 11:05:13,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:13" (1/1) ... [2019-12-07 11:05:13,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:13" (1/1) ... [2019-12-07 11:05:13,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:05:13,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:05:13,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:05:13,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:05:13,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/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 [2019-12-07 11:05:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-12-07 11:05:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-07 11:05:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 11:05:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2019-12-07 11:05:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 11:05:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:05:14,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:05:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 11:05:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 11:05:17,272 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:05:17,273 INFO L287 CfgBuilder]: Removed 24 assume(true) statements. [2019-12-07 11:05:17,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:05:17 BoogieIcfgContainer [2019-12-07 11:05:17,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:05:17,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 11:05:17,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 11:05:17,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 11:05:17,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 11:05:13" (1/3) ... [2019-12-07 11:05:17,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e5b620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:05:17, skipping insertion in model container [2019-12-07 11:05:17,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:05:13" (2/3) ... [2019-12-07 11:05:17,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e5b620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:05:17, skipping insertion in model container [2019-12-07 11:05:17,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:05:17" (3/3) ... [2019-12-07 11:05:17,278 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2019-12-07 11:05:17,284 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 11:05:17,289 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 11:05:17,296 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 11:05:17,311 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 11:05:17,312 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 11:05:17,312 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 11:05:17,312 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:05:17,312 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:05:17,312 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 11:05:17,312 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:05:17,313 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 11:05:17,322 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2019-12-07 11:05:17,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 11:05:17,326 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:05:17,327 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:05:17,327 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:05:17,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:05:17,331 INFO L82 PathProgramCache]: Analyzing trace with hash 464220005, now seen corresponding path program 1 times [2019-12-07 11:05:17,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 11:05:17,338 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387586069] [2019-12-07 11:05:17,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 11:05:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:05:18,154 INFO L264 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 11:05:18,158 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:05:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:05:18,167 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:05:18,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:05:18,170 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387586069] [2019-12-07 11:05:18,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:05:18,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 11:05:18,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004818248] [2019-12-07 11:05:18,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 11:05:18,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 11:05:18,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 11:05:18,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 11:05:18,184 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2019-12-07 11:05:18,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:05:18,200 INFO L93 Difference]: Finished difference Result 119 states and 208 transitions. [2019-12-07 11:05:18,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 11:05:18,201 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-12-07 11:05:18,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:05:18,209 INFO L225 Difference]: With dead ends: 119 [2019-12-07 11:05:18,209 INFO L226 Difference]: Without dead ends: 57 [2019-12-07 11:05:18,211 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 11:05:18,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-12-07 11:05:18,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2019-12-07 11:05:18,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-12-07 11:05:18,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2019-12-07 11:05:18,237 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 11 [2019-12-07 11:05:18,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:05:18,237 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2019-12-07 11:05:18,237 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 11:05:18,237 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2019-12-07 11:05:18,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 11:05:18,238 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:05:18,238 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:05:18,438 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 11:05:18,439 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:05:18,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:05:18,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1051323842, now seen corresponding path program 1 times [2019-12-07 11:05:18,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 11:05:18,442 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362341348] [2019-12-07 11:05:18,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/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 [2019-12-07 11:05:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:05:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:05:20,481 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 11:05:20,482 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 11:05:20,683 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 11:05:20,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 11:05:20 BoogieIcfgContainer [2019-12-07 11:05:20,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 11:05:20,714 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:05:20,714 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:05:20,714 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:05:20,714 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:05:17" (3/4) ... [2019-12-07 11:05:20,716 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 11:05:20,749 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a22f3128-2b4f-4bd2-b092-cb6f51cd1d47/bin/utaipan/witness.graphml [2019-12-07 11:05:20,749 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:05:20,751 INFO L168 Benchmark]: Toolchain (without parser) took 7114.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 953.7 MB in the beginning and 1.0 GB in the end (delta: -60.3 MB). Peak memory consumption was 81.8 MB. Max. memory is 11.5 GB. [2019-12-07 11:05:20,751 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:05:20,751 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -170.7 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2019-12-07 11:05:20,752 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 11:05:20,752 INFO L168 Benchmark]: Boogie Preprocessor took 32.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:05:20,752 INFO L168 Benchmark]: RCFGBuilder took 3309.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 11.5 GB. [2019-12-07 11:05:20,753 INFO L168 Benchmark]: TraceAbstraction took 3439.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 58.1 MB). Peak memory consumption was 58.1 MB. Max. memory is 11.5 GB. [2019-12-07 11:05:20,753 INFO L168 Benchmark]: Witness Printer took 35.92 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:05:20,754 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 260.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -170.7 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 3309.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3439.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 58.1 MB). Peak memory consumption was 58.1 MB. Max. memory is 11.5 GB. * Witness Printer took 35.92 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 191]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1.0, Zero_fmod={2:0}] [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 locations, 1 error locations. Result: UNSAFE, OverallTime: 3.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 38 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...